Having several sources plugged into the RCA inputs of a brand new Rotel
RA-1070 integrated, the sound seems to be "leaking" between RCA inputs. For
example, if I select the CD source (with nothing connected to the CD input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing. The
tuner RCA input is right next to (over) the CD RCA input on the back of the
integrated. If I turn the volume to max power, the "leaking" becomes loud
enough for normal listenning! The "leaked" sound can also be heard if I
select the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have any spec)
are very inefficient.

The tuner is not causing the problem because I get the same leaking if I
plug another source in the same RCA input. The tuner RCA input is not the
only one having this problem, as I get similar leaking from the other RCA
inputs. Just to make things worse, my tuner doesn't have a power button on
the remote, but only on its front panel (Rotel RT-02)... So to listen to
another source without the leaking, I have to walk to the tuner and turn it
off everytime...

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is this
normal? Is there any way to improve that?

Thanks for any help (sorry for my bad English)

On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu wrote:
Having several sources plugged into the RCA inputs of a brand new Rotel
RA-1070 integrated, the sound seems to be "leaking" between RCA inputs. For
example, if I select the CD source (with nothing connected to the CD input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing. The
tuner RCA input is right next to (over) the CD RCA input on the back of the
integrated. If I turn the volume to max power, the "leaking" becomes loud
enough for normal listenning! The "leaked" sound can also be heard if I
select the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have any spec)
are very inefficient.

The tuner is not causing the problem because I get the same leaking if I
plug another source in the same RCA input. The tuner RCA input is not the
only one having this problem, as I get similar leaking from the other RCA
inputs. Just to make things worse, my tuner doesn't have a power button on
the remote, but only on its front panel (Rotel RT-02)... So to listen to
another source without the leaking, I have to walk to the tuner and turn it
off everytime...

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is this
normal? Is there any way to improve that?

I had the same problem with a B&K pro-5 pre-amp. It was caused by leakage
across a 16pin ribbon cable used to connect the back connectors to the
main board. If they hadn't been so incredibly cheap with their wiring
then that problem would not have occured. If they had even spent the extra
penny and gone with a 24pin ribbon cable and interleaved the signal wires
with ground wires, they could have eliminated that problem.

Sorry you paid $1200 for a piece of ****, but you don't always get what you
pay for, especially with audiophile equipment.

About all you can do is keep unused input sources turned off. For a VCR
connected to your system on a timed record, about all you can do is run
the VCR's output through a cheap switchbox (Radio shack has them for $15).
Too bad your $1200 unit hasn't the quality of a $15 radio shack switchbox.

On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu wrote:
Having several sources plugged into the RCA inputs of a brand new Rotel
RA-1070 integrated, the sound seems to be "leaking" between RCA inputs. For
example, if I select the CD source (with nothing connected to the CD input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing. The
tuner RCA input is right next to (over) the CD RCA input on the back of the
integrated. If I turn the volume to max power, the "leaking" becomes loud
enough for normal listenning! The "leaked" sound can also be heard if I
select the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have any spec)
are very inefficient.

The tuner is not causing the problem because I get the same leaking if I
plug another source in the same RCA input. The tuner RCA input is not the
only one having this problem, as I get similar leaking from the other RCA
inputs. Just to make things worse, my tuner doesn't have a power button on
the remote, but only on its front panel (Rotel RT-02)... So to listen to
another source without the leaking, I have to walk to the tuner and turn it
off everytime...

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is this
normal? Is there any way to improve that?

I had the same problem with a B&K pro-5 pre-amp. It was caused by leakage
across a 16pin ribbon cable used to connect the back connectors to the
main board. If they hadn't been so incredibly cheap with their wiring
then that problem would not have occured. If they had even spent the extra
penny and gone with a 24pin ribbon cable and interleaved the signal wires
with ground wires, they could have eliminated that problem.

Sorry you paid $1200 for a piece of ****, but you don't always get what you
pay for, especially with audiophile equipment.

About all you can do is keep unused input sources turned off. For a VCR
connected to your system on a timed record, about all you can do is run
the VCR's output through a cheap switchbox (Radio shack has them for $15).
Too bad your $1200 unit hasn't the quality of a $15 radio shack switchbox.

On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu wrote:
Having several sources plugged into the RCA inputs of a brand new Rotel
RA-1070 integrated, the sound seems to be "leaking" between RCA inputs. For
example, if I select the CD source (with nothing connected to the CD input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing. The
tuner RCA input is right next to (over) the CD RCA input on the back of the
integrated. If I turn the volume to max power, the "leaking" becomes loud
enough for normal listenning! The "leaked" sound can also be heard if I
select the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have any spec)
are very inefficient.

The tuner is not causing the problem because I get the same leaking if I
plug another source in the same RCA input. The tuner RCA input is not the
only one having this problem, as I get similar leaking from the other RCA
inputs. Just to make things worse, my tuner doesn't have a power button on
the remote, but only on its front panel (Rotel RT-02)... So to listen to
another source without the leaking, I have to walk to the tuner and turn it
off everytime...

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is this
normal? Is there any way to improve that?

I had the same problem with a B&K pro-5 pre-amp. It was caused by leakage
across a 16pin ribbon cable used to connect the back connectors to the
main board. If they hadn't been so incredibly cheap with their wiring
then that problem would not have occured. If they had even spent the extra
penny and gone with a 24pin ribbon cable and interleaved the signal wires
with ground wires, they could have eliminated that problem.

Sorry you paid $1200 for a piece of ****, but you don't always get what you
pay for, especially with audiophile equipment.

About all you can do is keep unused input sources turned off. For a VCR
connected to your system on a timed record, about all you can do is run
the VCR's output through a cheap switchbox (Radio shack has them for $15).
Too bad your $1200 unit hasn't the quality of a $15 radio shack switchbox.

On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu wrote:
Having several sources plugged into the RCA inputs of a brand new Rotel
RA-1070 integrated, the sound seems to be "leaking" between RCA inputs. For
example, if I select the CD source (with nothing connected to the CD input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing. The
tuner RCA input is right next to (over) the CD RCA input on the back of the
integrated. If I turn the volume to max power, the "leaking" becomes loud
enough for normal listenning! The "leaked" sound can also be heard if I
select the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have any spec)
are very inefficient.

The tuner is not causing the problem because I get the same leaking if I
plug another source in the same RCA input. The tuner RCA input is not the
only one having this problem, as I get similar leaking from the other RCA
inputs. Just to make things worse, my tuner doesn't have a power button on
the remote, but only on its front panel (Rotel RT-02)... So to listen to
another source without the leaking, I have to walk to the tuner and turn it
off everytime...

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is this
normal? Is there any way to improve that?

I had the same problem with a B&K pro-5 pre-amp. It was caused by leakage
across a 16pin ribbon cable used to connect the back connectors to the
main board. If they hadn't been so incredibly cheap with their wiring
then that problem would not have occured. If they had even spent the extra
penny and gone with a 24pin ribbon cable and interleaved the signal wires
with ground wires, they could have eliminated that problem.

Sorry you paid $1200 for a piece of ****, but you don't always get what you
pay for, especially with audiophile equipment.

About all you can do is keep unused input sources turned off. For a VCR
connected to your system on a timed record, about all you can do is run
the VCR's output through a cheap switchbox (Radio shack has them for $15).
Too bad your $1200 unit hasn't the quality of a $15 radio shack switchbox.

TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player, preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player, preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player, preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player, preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation to
keep, and they probably don't want hundreds of unit sent back...
--


Frédéric Mathieu
Programmeur web
L'Union des consommateurs

"Arny Krueger" a écrit dans le message de
...
TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two
pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player,
preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the
tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation to
keep, and they probably don't want hundreds of unit sent back...
--


Frédéric Mathieu
Programmeur web
L'Union des consommateurs

"Arny Krueger" a écrit dans le message de
...
TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two
pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player,
preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the
tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation to
keep, and they probably don't want hundreds of unit sent back...
--


Frédéric Mathieu
Programmeur web
L'Union des consommateurs

"Arny Krueger" a écrit dans le message de
...
TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two
pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player,
preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the
tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation to
keep, and they probably don't want hundreds of unit sent back...
--


Frédéric Mathieu
Programmeur web
L'Union des consommateurs

"Arny Krueger" a écrit dans le message de
...
TCS wrote:
On Fri, 23 Apr 2004 13:11:44 -0400, Frédéric Mathieu
wrote:

Having several sources plugged into the RCA inputs of a brand new
Rotel RA-1070 integrated, the sound seems to be "leaking" between
RCA inputs. For example, if I select the CD source (with nothing
connected to the CD input), and turn the volume up to about 9
o'clock, I can hear the tuner playing. The tuner RCA input is right
next to (over) the CD RCA input on the back of the integrated. If I
turn the volume to max power, the "leaking" becomes loud enough for
normal listenning! The "leaked" sound can also be heard if I select
the TAPE 1 and TAPE 2 sources. And that is happening with a thirty
years old pair of Wharfedale speakers which I believe (don't have
any spec) are very inefficient.

No doubt a case of capacitive coupling between the outputs of the two
pieces
of equipment.

Possibly, the CD player is contributing to the problem by haveing a high
output impedance. I'd recommend trying another CD or DVD player,
preferably
something as new and mainstream as possible.

The tuner is not causing the problem because I get the same leaking
if I plug another source in the same RCA input. The tuner RCA input
is not the only one having this problem, as I get similar leaking
from the other RCA inputs. Just to make things worse, my tuner
doesn't have a power button on the remote, but only on its front
panel (Rotel RT-02)... So to listen to another source without the
leaking, I have to walk to the tuner and turn it off everytime...

Right, capacitive coupling of the output of whatever you plug into the
tuner
input jack, in the CD input.

If this was a cheap 200$ integrated, I wouldn't be surprised by this
leaking, but I was expecting better from a 1200$ integrated... Is
this normal? Is there any way to improve that?

The problem can be reduced in the design phase by using an input selector
switch that shorts out all inputs that are unused at the moment.

I had the same problem with a B&K pro-5 pre-amp. It was caused by
leakage across a 16pin ribbon cable used to connect the back
connectors to the main board. If they hadn't been so incredibly
cheap with their wiring then that problem would not have occured. If
they had even spent the extra penny and gone with a 24pin ribbon
cable and interleaved the signal wires with ground wires, they could
have eliminated that problem.

Actually, a major contributor to the problem could be the CD player. What
make and model?

Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

The problem is at least a 100 times worse now, than it will be when you hook
up a CD or DVD player.

But can't this be caused by a defect (i.e. that can be repaired)?

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

I don't have any electronics knowledge, but I was thinking, how could
Rotel put such badly designed and cheap RCA inputs/internal cabling
in their top of the line integrated amp (and get away with it)?

Its not really due to cheap wiring.

Of course they are in the business to make money like anyone else, but
they still have a reputation to keep, and they probably don't want
hundreds of unit sent back...

Most people attach CD players to their CD inputs before they start worrying
about problems like this!

Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

The problem is at least a 100 times worse now, than it will be when you hook
up a CD or DVD player.

But can't this be caused by a defect (i.e. that can be repaired)?

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

I don't have any electronics knowledge, but I was thinking, how could
Rotel put such badly designed and cheap RCA inputs/internal cabling
in their top of the line integrated amp (and get away with it)?

Its not really due to cheap wiring.

Of course they are in the business to make money like anyone else, but
they still have a reputation to keep, and they probably don't want
hundreds of unit sent back...

Most people attach CD players to their CD inputs before they start worrying
about problems like this!

Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

The problem is at least a 100 times worse now, than it will be when you hook
up a CD or DVD player.

But can't this be caused by a defect (i.e. that can be repaired)?

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

I don't have any electronics knowledge, but I was thinking, how could
Rotel put such badly designed and cheap RCA inputs/internal cabling
in their top of the line integrated amp (and get away with it)?

Its not really due to cheap wiring.

Of course they are in the business to make money like anyone else, but
they still have a reputation to keep, and they probably don't want
hundreds of unit sent back...

Most people attach CD players to their CD inputs before they start worrying
about problems like this!

Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

The problem is at least a 100 times worse now, than it will be when you hook
up a CD or DVD player.

But can't this be caused by a defect (i.e. that can be repaired)?

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

I don't have any electronics knowledge, but I was thinking, how could
Rotel put such badly designed and cheap RCA inputs/internal cabling
in their top of the line integrated amp (and get away with it)?

Its not really due to cheap wiring.

Of course they are in the business to make money like anyone else, but
they still have a reputation to keep, and they probably don't want
hundreds of unit sent back...

Most people attach CD players to their CD inputs before they start worrying
about problems like this!

"Frédéric Mathieu" wrote in message
.. .
I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put
such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation
to
keep, and they probably don't want hundreds of unit sent back...

This is very common when you have an input floating with no source connected
to it. I'll bet if you soldered 1K resistors between the tip and the ring of
some male RCA connectors and plugged them into your unused inputs, the
problem would be vastly reduced if not totally eliminated.

"Frédéric Mathieu" wrote in message
.. .
I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put
such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation
to
keep, and they probably don't want hundreds of unit sent back...

This is very common when you have an input floating with no source connected
to it. I'll bet if you soldered 1K resistors between the tip and the ring of
some male RCA connectors and plugged them into your unused inputs, the
problem would be vastly reduced if not totally eliminated.

"Frédéric Mathieu" wrote in message
.. .
I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put
such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation
to
keep, and they probably don't want hundreds of unit sent back...

This is very common when you have an input floating with no source connected
to it. I'll bet if you soldered 1K resistors between the tip and the ring of
some male RCA connectors and plugged them into your unused inputs, the
problem would be vastly reduced if not totally eliminated.

"Frédéric Mathieu" wrote in message
.. .
I don't have a CD player yet. I was selecting the CD source with nothing
connected to it. Possibly, with a cd playing at the same time, the tuner
leakage would become almost inaudible, but at that price I think anyone
would agree that it's not acceptable.

But can't this be caused by a defect (i.e. that can be repaired)? I don't
have any electronics knowledge, but I was thinking, how could Rotel put
such
badly designed and cheap RCA inputs/internal cabling in their top of the
line integrated amp (and get away with it)? Of course they are in the
business to make money like anyone else, but they still have a reputation
to
keep, and they probably don't want hundreds of unit sent back...

This is very common when you have an input floating with no source connected
to it. I'll bet if you soldered 1K resistors between the tip and the ring of
some male RCA connectors and plugged them into your unused inputs, the
problem would be vastly reduced if not totally eliminated.

"Frédéric Mathieu" wrote in message ...

snip

This phenomena is known, usually, as "crosstalk". Impossible to
completely eliminate, at least at any price point below that which
even the Depatment of Defense would consider exorbitant (and you're
looking at a whole lot of money to get to that point).
If you select an input with nothing connected to it and crank up the
volume that far you're basically telling the amp "take any signal that
manages to put itself onto that piece of wire or circuit board trace
(which you are now using as an "antenna") running from the external
RCA connector to the pre-amp stage and boost it way, way, way up".
You are perceiving a problem where none really exists. If you want
to listen to your tuner, turn the selector switch to "tuner", if you
want to listen to a CD, connect an CD player and switch to that input.
You're unlikely to ever need to turn the volume up that far under
normal conditions anyway.

"Frédéric Mathieu" wrote in message ...

snip

This phenomena is known, usually, as "crosstalk". Impossible to
completely eliminate, at least at any price point below that which
even the Depatment of Defense would consider exorbitant (and you're
looking at a whole lot of money to get to that point).
If you select an input with nothing connected to it and crank up the
volume that far you're basically telling the amp "take any signal that
manages to put itself onto that piece of wire or circuit board trace
(which you are now using as an "antenna") running from the external
RCA connector to the pre-amp stage and boost it way, way, way up".
You are perceiving a problem where none really exists. If you want
to listen to your tuner, turn the selector switch to "tuner", if you
want to listen to a CD, connect an CD player and switch to that input.
You're unlikely to ever need to turn the volume up that far under
normal conditions anyway.

"Frédéric Mathieu" wrote in message ...

snip

This phenomena is known, usually, as "crosstalk". Impossible to
completely eliminate, at least at any price point below that which
even the Depatment of Defense would consider exorbitant (and you're
looking at a whole lot of money to get to that point).
If you select an input with nothing connected to it and crank up the
volume that far you're basically telling the amp "take any signal that
manages to put itself onto that piece of wire or circuit board trace
(which you are now using as an "antenna") running from the external
RCA connector to the pre-amp stage and boost it way, way, way up".
You are perceiving a problem where none really exists. If you want
to listen to your tuner, turn the selector switch to "tuner", if you
want to listen to a CD, connect an CD player and switch to that input.
You're unlikely to ever need to turn the volume up that far under
normal conditions anyway.

"Frédéric Mathieu" wrote in message ...

snip

This phenomena is known, usually, as "crosstalk". Impossible to
completely eliminate, at least at any price point below that which
even the Depatment of Defense would consider exorbitant (and you're
looking at a whole lot of money to get to that point).
If you select an input with nothing connected to it and crank up the
volume that far you're basically telling the amp "take any signal that
manages to put itself onto that piece of wire or circuit board trace
(which you are now using as an "antenna") running from the external
RCA connector to the pre-amp stage and boost it way, way, way up".
You are perceiving a problem where none really exists. If you want
to listen to your tuner, turn the selector switch to "tuner", if you
want to listen to a CD, connect an CD player and switch to that input.
You're unlikely to ever need to turn the volume up that far under
normal conditions anyway.

"Arny Krueger" a écrit dans le message de
...
Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

I don't know who's time I'm wasting, but I explained that particular point
very clearly from the start, in my initial post. Quote:

"Frédéric Mathieu" a écrit dans le message de
news:40894f15$1_1@aeinews....
For
example, if I select the CD source (with nothing connected to the CD
input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing.

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

That makes my day, thanks. Sorry for being so ignorant...

Most people attach CD players to their CD inputs before they start
worrying
about problems like this!

Oh really? Is that what it's made for?

Sorry guys, this is my first try at a high-end system. I still think this
was a legitimate question, but seems like you don't think so... The most
important is that your answers provided me with an instant relief. Thanks
for the soothing answers.

"Arny Krueger" a écrit dans le message de
...
Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

I don't know who's time I'm wasting, but I explained that particular point
very clearly from the start, in my initial post. Quote:

"Frédéric Mathieu" a écrit dans le message de
news:40894f15$1_1@aeinews....
For
example, if I select the CD source (with nothing connected to the CD
input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing.

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

That makes my day, thanks. Sorry for being so ignorant...

Most people attach CD players to their CD inputs before they start
worrying
about problems like this!

Oh really? Is that what it's made for?

Sorry guys, this is my first try at a high-end system. I still think this
was a legitimate question, but seems like you don't think so... The most
important is that your answers provided me with an instant relief. Thanks
for the soothing answers.

"Arny Krueger" a écrit dans le message de
...
Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

I don't know who's time I'm wasting, but I explained that particular point
very clearly from the start, in my initial post. Quote:

"Frédéric Mathieu" a écrit dans le message de
news:40894f15$1_1@aeinews....
For
example, if I select the CD source (with nothing connected to the CD
input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing.

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

That makes my day, thanks. Sorry for being so ignorant...

Most people attach CD players to their CD inputs before they start
worrying
about problems like this!

Oh really? Is that what it's made for?

Sorry guys, this is my first try at a high-end system. I still think this
was a legitimate question, but seems like you don't think so... The most
important is that your answers provided me with an instant relief. Thanks
for the soothing answers.

"Arny Krueger" a écrit dans le message de
...
Frédéric Mathieu wrote:
I don't have a CD player yet. I was selecting the CD source with
nothing connected to it. Possibly, with a cd playing at the same
time, the tuner leakage would become almost inaudible, but at that
price I think anyone would agree that it's not acceptable.

No CD player?

You're wasting both of our time.

I don't know who's time I'm wasting, but I explained that particular point
very clearly from the start, in my initial post. Quote:

"Frédéric Mathieu" a écrit dans le message de
news:40894f15$1_1@aeinews....
For
example, if I select the CD source (with nothing connected to the CD
input),
and turn the volume up to about 9 o'clock, I can hear the tuner playing.

Right now you're obsessing over a problem that will be vastly reduced when
you get a CD player.

That makes my day, thanks. Sorry for being so ignorant...

Most people attach CD players to their CD inputs before they start
worrying
about problems like this!

Oh really? Is that what it's made for?

Sorry guys, this is my first try at a high-end system. I still think this
was a legitimate question, but seems like you don't think so... The most
important is that your answers provided me with an instant relief. Thanks
for the soothing answers.

"Frédéric Mathieu" wrote ....
Sorry guys, this is my first try at a high-end system.

It doesn't help to add information like that AFTER you are displeased
with the responses to your original (apparently incomplete) question.

I still think this was a legitimate question, but seems like you
don't think so...

We are the ones with (collectively) hundreds of years of audio
experience. You were performing an unnatural (and illegitemate)
test. There is likely NO equipment at any price that would pass
your "test".

The most important is that your answers provided me with
an instant relief. Thanks for the soothing answers.

If you want "soothing" answers, you are in the wrong newsgroup.
OTOH, if you want technically sound answers, don't expect
"soothing".

"Frédéric Mathieu" wrote ....
Sorry guys, this is my first try at a high-end system.

It doesn't help to add information like that AFTER you are displeased
with the responses to your original (apparently incomplete) question.

I still think this was a legitimate question, but seems like you
don't think so...

We are the ones with (collectively) hundreds of years of audio
experience. You were performing an unnatural (and illegitemate)
test. There is likely NO equipment at any price that would pass
your "test".

The most important is that your answers provided me with
an instant relief. Thanks for the soothing answers.

If you want "soothing" answers, you are in the wrong newsgroup.
OTOH, if you want technically sound answers, don't expect
"soothing".

"Frédéric Mathieu" wrote ....
Sorry guys, this is my first try at a high-end system.

It doesn't help to add information like that AFTER you are displeased
with the responses to your original (apparently incomplete) question.

I still think this was a legitimate question, but seems like you
don't think so...

We are the ones with (collectively) hundreds of years of audio
experience. You were performing an unnatural (and illegitemate)
test. There is likely NO equipment at any price that would pass
your "test".

The most important is that your answers provided me with
an instant relief. Thanks for the soothing answers.

If you want "soothing" answers, you are in the wrong newsgroup.
OTOH, if you want technically sound answers, don't expect
"soothing".

"Frédéric Mathieu" wrote ....
Sorry guys, this is my first try at a high-end system.

It doesn't help to add information like that AFTER you are displeased
with the responses to your original (apparently incomplete) question.

I still think this was a legitimate question, but seems like you
don't think so...

We are the ones with (collectively) hundreds of years of audio
experience. You were performing an unnatural (and illegitemate)
test. There is likely NO equipment at any price that would pass
your "test".

The most important is that your answers provided me with
an instant relief. Thanks for the soothing answers.

If you want "soothing" answers, you are in the wrong newsgroup.
OTOH, if you want technically sound answers, don't expect
"soothing".