nope...we replaced the plugs and wires here in the shop with resistor units
(after the noise started, but it didn't help). we're gonna test and replace
the capacitor soon (time is an issue for this customer) c'mon! no other
thoughts?

most of the noise faq's and such I've seen all focus and centre around
alternator noise. (arg!) I've done the "remove ground" and see what
happens, and the noise goes away, so its a power system issue...not being
induced in the signal (on the way in) or the speaker leads (on the way out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message
...
In article ,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last week (decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair of 10's).
The
job went well till I fired up the engine!! The truck is a 1987 Chevy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud "buzz" that varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the truck, no cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was backfeeding), no cure
-- unplug the head unit, disconnect rcas, no cure. (obviously not
signal
related)
-- changed my 4 ga. ground to about 4 different solid points, none
helped
-- used jumper cables to ground back to the battery temporarily, no cure
-- changed out spark plugs and plug wires with fresh resistor type
units, no
cure

As a side note, this truck also causes interference in televisions as it
drives by, so its pumping off some extremely big rf noise! The last
thing
we're gonna try later on is replacing the capacitor in the distributor
that
the manual says is for nothing more than RFI suppression. Can anyone
suggest anything else to look at for ignition noise? The truck has no
computers or anything in it.

Perhaps this may help...a while back (with the stock system), the
alternator's regulator failed, sending the output voltage gauge off the
end
(over 18 volts). at that moment, the factory deck/speakers began
buzzing
painfully loud. turning the deck off didn't kill the noise. changing
out
the alternator fixed it, but we figure something else in the vehicle was
damaged/destroyed by the voltage spike, now causing the intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition capacitor, as
you mentioned. Also make sure that the owner didn't do anything stupid
like replace the resistor wires and plugs with solid conductor types.

Man you got me... Something's not working 'right' if its emiting enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with resistor units
(after the noise started, but it didn't help). we're gonna test and replace
the capacitor soon (time is an issue for this customer) c'mon! no other
thoughts?

most of the noise faq's and such I've seen all focus and centre around
alternator noise. (arg!) I've done the "remove ground" and see what
happens, and the noise goes away, so its a power system issue...not being
induced in the signal (on the way in) or the speaker leads (on the way out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message
...
In article ,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last week (decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair of 10's).
The
job went well till I fired up the engine!! The truck is a 1987 Chevy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud "buzz" that varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the truck, no cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was backfeeding), no cure
-- unplug the head unit, disconnect rcas, no cure. (obviously not
signal
related)
-- changed my 4 ga. ground to about 4 different solid points, none
helped
-- used jumper cables to ground back to the battery temporarily, no cure
-- changed out spark plugs and plug wires with fresh resistor type
units, no
cure

As a side note, this truck also causes interference in televisions as it
drives by, so its pumping off some extremely big rf noise! The last
thing
we're gonna try later on is replacing the capacitor in the distributor
that
the manual says is for nothing more than RFI suppression. Can anyone
suggest anything else to look at for ignition noise? The truck has no
computers or anything in it.

Perhaps this may help...a while back (with the stock system), the
alternator's regulator failed, sending the output voltage gauge off the
end
(over 18 volts). at that moment, the factory deck/speakers began
buzzing
painfully loud. turning the deck off didn't kill the noise. changing
out
the alternator fixed it, but we figure something else in the vehicle was
damaged/destroyed by the voltage spike, now causing the intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition capacitor, as
you mentioned. Also make sure that the owner didn't do anything stupid
like replace the resistor wires and plugs with solid conductor types.

I would fix the problem with the car before worrying so much
about the stereo noise...

Sanitarium wrote:

Man you got me... Something's not working 'right' if its emiting enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with resistor units
(after the noise started, but it didn't help). we're gonna test and replace
the capacitor soon (time is an issue for this customer) c'mon! no other
thoughts?

most of the noise faq's and such I've seen all focus and centre around
alternator noise. (arg!) I've done the "remove ground" and see what
happens, and the noise goes away, so its a power system issue...not being
induced in the signal (on the way in) or the speaker leads (on the way out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message
...
In article ,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last week (decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair of 10's).
The
job went well till I fired up the engine!! The truck is a 1987 Chevy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud "buzz" that varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the truck, no cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was backfeeding), no cure
-- unplug the head unit, disconnect rcas, no cure. (obviously not
signal
related)
-- changed my 4 ga. ground to about 4 different solid points, none
helped
-- used jumper cables to ground back to the battery temporarily, no cure
-- changed out spark plugs and plug wires with fresh resistor type
units, no
cure

As a side note, this truck also causes interference in televisions as it
drives by, so its pumping off some extremely big rf noise! The last
thing
we're gonna try later on is replacing the capacitor in the distributor
that
the manual says is for nothing more than RFI suppression. Can anyone
suggest anything else to look at for ignition noise? The truck has no
computers or anything in it.

Perhaps this may help...a while back (with the stock system), the
alternator's regulator failed, sending the output voltage gauge off the
end
(over 18 volts). at that moment, the factory deck/speakers began
buzzing
painfully loud. turning the deck off didn't kill the noise. changing
out
the alternator fixed it, but we figure something else in the vehicle was
damaged/destroyed by the voltage spike, now causing the intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition capacitor, as
you mentioned. Also make sure that the owner didn't do anything stupid
like replace the resistor wires and plugs with solid conductor types.

eddie...the problem with the car IS the stereo noise!! if he didn't have a
larger system, he wouldn't know about the noise (other than disrupting
tv's), and he obviously wouldn't care about that! the only reason he's
lookin for a fix is to cure the system noise.

??

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
I would fix the problem with the car before worrying so much
about the stereo noise...

Sanitarium wrote:

Man you got me... Something's not working 'right' if its emiting enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with resistor
units
(after the noise started, but it didn't help). we're gonna test and
replace
the capacitor soon (time is an issue for this customer) c'mon! no
other
thoughts?

most of the noise faq's and such I've seen all focus and centre around
alternator noise. (arg!) I've done the "remove ground" and see what
happens, and the noise goes away, so its a power system issue...not
being
induced in the signal (on the way in) or the speaker leads (on the way
out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message
...
In article ,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last week
(decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair of
10's).
The
job went well till I fired up the engine!! The truck is a 1987 Ch
evy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud "buzz" that
varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the truck, no
cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was backfeeding), no
cure
-- unplug the head unit, disconnect rcas, no cure. (obviously not
signal
related)
-- changed my 4 ga. ground to about 4 different solid points, none
helped
-- used jumper cables to ground back to the battery temporarily,
no cure
-- changed out spark plugs and plug wires with fresh resistor type
units, no
cure

As a side note, this truck also causes interference in televisions
as it
drives by, so its pumping off some extremely big rf noise! The
last
thing
we're gonna try later on is replacing the capacitor in the
distributor
that
the manual says is for nothing more than RFI suppression. Can
anyone
suggest anything else to look at for ignition noise? The truck
has no
computers or anything in it.

Perhaps this may help...a while back (with the stock system), the
alternator's regulator failed, sending the output voltage gauge
off the
end
(over 18 volts). at that moment, the factory deck/speakers began
buzzing
painfully loud. turning the deck off didn't kill the noise.
changing
out
the alternator fixed it, but we figure something else in the
vehicle was
damaged/destroyed by the voltage spike, now causing the
intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition
capacitor, as
you mentioned. Also make sure that the owner didn't do anything
stupid
like replace the resistor wires and plugs with solid conductor
types.

but if its bad enough to mess with TVS at a distance then there
is no hope for the high end stereo system!

I would figur out what the problem is with the car before you
could ever even attempt to do anything to the stereo to cure it.

is there anything not factory? High performance ignition for instance?
I would guess there is something messed up in the ignition system!

Eddie

Hamilton Audio wrote:

eddie...the problem with the car IS the stereo noise!! if he didn't have a
larger system, he wouldn't know about the noise (other than disrupting
tv's), and he obviously wouldn't care about that! the only reason he's
lookin for a fix is to cure the system noise.

??

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
I would fix the problem with the car before worrying so much
about the stereo noise...

Sanitarium wrote:

Man you got me... Something's not working 'right' if its emiting enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with resistor
units
(after the noise started, but it didn't help). we're gonna test and
replace
the capacitor soon (time is an issue for this customer) c'mon! no
other
thoughts?

most of the noise faq's and such I've seen all focus and centre around
alternator noise. (arg!) I've done the "remove ground" and see what
happens, and the noise goes away, so its a power system issue...not
being
induced in the signal (on the way in) or the speaker leads (on the way
out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message
...
In article ,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last week
(decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair of
10's).
The
job went well till I fired up the engine!! The truck is a 1987 Ch
evy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud "buzz" that
varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the truck, no
cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was backfeeding), no
cure
-- unplug the head unit, disconnect rcas, no cure. (obviously not
signal
related)
-- changed my 4 ga. ground to about 4 different solid points, none
helped
-- used jumper cables to ground back to the battery temporarily,
no cure
-- changed out spark plugs and plug wires with fresh resistor type
units, no
cure

As a side note, this truck also causes interference in televisions
as it
drives by, so its pumping off some extremely big rf noise! The
last
thing
we're gonna try later on is replacing the capacitor in the
distributor
that
the manual says is for nothing more than RFI suppression. Can
anyone
suggest anything else to look at for ignition noise? The truck
has no
computers or anything in it.

Perhaps this may help...a while back (with the stock system), the
alternator's regulator failed, sending the output voltage gauge
off the
end
(over 18 volts). at that moment, the factory deck/speakers began
buzzing
painfully loud. turning the deck off didn't kill the noise.
changing
out
the alternator fixed it, but we figure something else in the
vehicle was
damaged/destroyed by the voltage spike, now causing the
intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition
capacitor, as
you mentioned. Also make sure that the owner didn't do anything
stupid
like replace the resistor wires and plugs with solid conductor
types.

gotcha eddie...but...thats what I meant!! can you suggest exactly WHAT in
the ignition system is causing the problem? I know that the stereo is just
a magnet for this noise, and nothing I do to it will help...

what other vehicle-related items should I look for??

thaks eddie!

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
but if its bad enough to mess with TVS at a distance then there
is no hope for the high end stereo system!

I would figur out what the problem is with the car before you
could ever even attempt to do anything to the stereo to cure it.

is there anything not factory? High performance ignition for instance?
I would guess there is something messed up in the ignition system!

Eddie

Hamilton Audio wrote:

eddie...the problem with the car IS the stereo noise!! if he didn't
have a
larger system, he wouldn't know about the noise (other than disrupting
tv's), and he obviously wouldn't care about that! the only reason he's
lookin for a fix is to cure the system noise.

??

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
I would fix the problem with the car before worrying so much
about the stereo noise...

Sanitarium wrote:

Man you got me... Something's not working 'right' if its emiting
enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with
resistor
units
(after the noise started, but it didn't help). we're gonna test
and
replace
the capacitor soon (time is an issue for this customer) c'mon!
no
other
thoughts?

most of the noise faq's and such I've seen all focus and centre
around
alternator noise. (arg!) I've done the "remove ground" and see
what
happens, and the noise goes away, so its a power system
issue...not
being
induced in the signal (on the way in) or the speaker leads (on the
way
out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message
...
In article ,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last week
(decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair of
10's).
The
job went well till I fired up the engine!! The truck is a
1987 Ch
evy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud "buzz"
that
varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the
truck, no
cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was backfeeding),
no
cure
-- unplug the head unit, disconnect rcas, no cure. (obviously
not
signal
related)
-- changed my 4 ga. ground to about 4 different solid points,
none
helped
-- used jumper cables to ground back to the battery
temporarily,
no cure
-- changed out spark plugs and plug wires with fresh resistor
type
units, no
cure

As a side note, this truck also causes interference in
televisions
as it
drives by, so its pumping off some extremely big rf noise!
The
last
thing
we're gonna try later on is replacing the capacitor in the
distributor
that
the manual says is for nothing more than RFI suppression. Can
anyone
suggest anything else to look at for ignition noise? The
truck
has no
computers or anything in it.

Perhaps this may help...a while back (with the stock system),
the
alternator's regulator failed, sending the output voltage
gauge
off the
end
(over 18 volts). at that moment, the factory deck/speakers
began
buzzing
painfully loud. turning the deck off didn't kill the noise.
changing
out
the alternator fixed it, but we figure something else in the
vehicle was
damaged/destroyed by the voltage spike, now causing the
intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition
capacitor, as
you mentioned. Also make sure that the owner didn't do anything
stupid
like replace the resistor wires and plugs with solid conductor
types.

this might be off the wall, but why not just create a parallel power
system (sort of). just don't use anything in that 'bad rf car' if you
can help it. all your wires should float from chassis and if you
install a 2nd battery (I know, I know..) then you float that ground,
too, and use that as a just-audio ground. the (-) and (+) would come
off that 2nd battery and never share anything in common with the car.

if the audio system and the car are the electrical equivalent of
ships-in-the-night, then you have effectively worked around the
problem.

I know its a kludge. but how long are you going to spend debugging
his truck (!) when its your jobs to just install a stereo and make
that sound clean?

seems like an interesting idea, but one that offers some expense that the
customer (good friend) is not going to pay its actually mostly him doing
the debugging, so I don't mind!! we'll tinker with the ignition some more,
as I belive its the capacitor in the distributor thats blown...

thanks!


"bryan" wrote in message
om...
this might be off the wall, but why not just create a parallel power
system (sort of). just don't use anything in that 'bad rf car' if you
can help it. all your wires should float from chassis and if you
install a 2nd battery (I know, I know..) then you float that ground,
too, and use that as a just-audio ground. the (-) and (+) would come
off that 2nd battery and never share anything in common with the car.

if the audio system and the car are the electrical equivalent of
ships-in-the-night, then you have effectively worked around the
problem.

I know its a kludge. but how long are you going to spend debugging
his truck (!) when its your jobs to just install a stereo and make
that sound clean?

you could get you a little AM transistor radio and move it around the
car to see where the noise is coming from.. In the 70s I built a buncha
noise sniffers out of cheap AM radios that were built into headpohones
for my installers.

it works pretty good but maybe so good with this messed up car that
you might get too much noise... ;-)

You will have to figgure out by a process of eliminination whats causing
the problem... take the spark plug wires completely off one at a time
(the vehicle may still run with one wire missing)
or replace each piece of the ignition system 1 at a time
or ground each piece of the ign system 1 at a time

eventually you will find it
If not bring it on down here to Texas and lemme fix it up for ya


Eddie


Hamilton Audio wrote:

gotcha eddie...but...thats what I meant!! can you suggest exactly WHAT in
the ignition system is causing the problem? I know that the stereo is just
a magnet for this noise, and nothing I do to it will help...

what other vehicle-related items should I look for??

thaks eddie!

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
but if its bad enough to mess with TVS at a distance then there
is no hope for the high end stereo system!

I would figur out what the problem is with the car before you
could ever even attempt to do anything to the stereo to cure it.

is there anything not factory? High performance ignition for instance?
I would guess there is something messed up in the ignition system!

Eddie

Hamilton Audio wrote:

eddie...the problem with the car IS the stereo noise!! if he didn't
have a
larger system, he wouldn't know about the noise (other than disrupting
tv's), and he obviously wouldn't care about that! the only reason he's
lookin for a fix is to cure the system noise.

??

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
I would fix the problem with the car before worrying so much
about the stereo noise...

Sanitarium wrote:

Man you got me... Something's not working 'right' if its emiting
enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with
resistor
units
(after the noise started, but it didn't help). we're gonna test
and
replace
the capacitor soon (time is an issue for this customer) c'mon!
no
other
thoughts?

most of the noise faq's and such I've seen all focus and centre
around
alternator noise. (arg!) I've done the "remove ground" and see
what
happens, and the noise goes away, so its a power system
issue...not
being
induced in the signal (on the way in) or the speaker leads (on the
way
out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message
...
In article ,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last week
(decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair of
10's).
The
job went well till I fired up the engine!! The truck is a
1987 Ch
evy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud "buzz"
that
varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the
truck, no
cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was backfeeding),
no
cure
-- unplug the head unit, disconnect rcas, no cure. (obviously
not
signal
related)
-- changed my 4 ga. ground to about 4 different solid points,
none
helped
-- used jumper cables to ground back to the battery
temporarily,
no cure
-- changed out spark plugs and plug wires with fresh resistor
type
units, no
cure

As a side note, this truck also causes interference in
televisions
as it
drives by, so its pumping off some extremely big rf noise!
The
last
thing
we're gonna try later on is replacing the capacitor in the
distributor
that
the manual says is for nothing more than RFI suppression. Can
anyone
suggest anything else to look at for ignition noise? The
truck
has no
computers or anything in it.

Perhaps this may help...a while back (with the stock system),
the
alternator's regulator failed, sending the output voltage
gauge
off the
end
(over 18 volts). at that moment, the factory deck/speakers
began
buzzing
painfully loud. turning the deck off didn't kill the noise.
changing
out
the alternator fixed it, but we figure something else in the
vehicle was
damaged/destroyed by the voltage spike, now causing the
intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition
capacitor, as
you mentioned. Also make sure that the owner didn't do anything
stupid
like replace the resistor wires and plugs with solid conductor
types.

thanks eddie! I would think that if it mucks up satellite tv, the am radio
trick will be far too noisy to be useful even 20 feet away

I've tried to use the process of elimination thing as much as possible. the
customer just cannot afford to keep replacing what turns out to be perfectly
good parts. we're down to the coil and the module in the ignition, neither
of which he'll buy unless we can guarantee it'll fix the noise.

whereabouts in texas are ya?

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
you could get you a little AM transistor radio and move it around the
car to see where the noise is coming from.. In the 70s I built a buncha
noise sniffers out of cheap AM radios that were built into headpohones
for my installers.

it works pretty good but maybe so good with this messed up car that
you might get too much noise... ;-)

You will have to figgure out by a process of eliminination whats causing
the problem... take the spark plug wires completely off one at a time
(the vehicle may still run with one wire missing)
or replace each piece of the ignition system 1 at a time
or ground each piece of the ign system 1 at a time

eventually you will find it
If not bring it on down here to Texas and lemme fix it up for ya


Eddie


Hamilton Audio wrote:

gotcha eddie...but...thats what I meant!! can you suggest exactly WHAT
in
the ignition system is causing the problem? I know that the stereo is
just
a magnet for this noise, and nothing I do to it will help...

what other vehicle-related items should I look for??

thaks eddie!

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
but if its bad enough to mess with TVS at a distance then there
is no hope for the high end stereo system!

I would figur out what the problem is with the car before you
could ever even attempt to do anything to the stereo to cure it.

is there anything not factory? High performance ignition for
instance?
I would guess there is something messed up in the ignition system!

Eddie

Hamilton Audio wrote:

eddie...the problem with the car IS the stereo noise!! if he didn't
have a
larger system, he wouldn't know about the noise (other than
disrupting
tv's), and he obviously wouldn't care about that! the only reason
he's
lookin for a fix is to cure the system noise.

??

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
I would fix the problem with the car before worrying so much
about the stereo noise...

Sanitarium wrote:

Man you got me... Something's not working 'right' if its
emiting
enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with
resistor
units
(after the noise started, but it didn't help). we're gonna
test
and
replace
the capacitor soon (time is an issue for this customer)
c'mon!
no
other
thoughts?

most of the noise faq's and such I've seen all focus and
centre
around
alternator noise. (arg!) I've done the "remove ground" and
see
what
happens, and the noise goes away, so its a power system
issue...not
being
induced in the signal (on the way in) or the speaker leads (on
the
way
out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message

...
In article
,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last
week
(decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair
of
10's).
The
job went well till I fired up the engine!! The truck is a
1987 Ch
evy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud
"buzz"
that
varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the
truck, no
cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was
backfeeding),
no
cure
-- unplug the head unit, disconnect rcas, no cure.
(obviously
not
signal
related)
-- changed my 4 ga. ground to about 4 different solid
points,
none
helped
-- used jumper cables to ground back to the battery
temporarily,
no cure
-- changed out spark plugs and plug wires with fresh
resistor
type
units, no
cure

As a side note, this truck also causes interference in
televisions
as it
drives by, so its pumping off some extremely big rf noise!
The
last
thing
we're gonna try later on is replacing the capacitor in the
distributor
that
the manual says is for nothing more than RFI suppression.
Can
anyone
suggest anything else to look at for ignition noise? The
truck
has no
computers or anything in it.

Perhaps this may help...a while back (with the stock
system),
the
alternator's regulator failed, sending the output voltage
gauge
off the
end
(over 18 volts). at that moment, the factory
deck/speakers
began
buzzing
painfully loud. turning the deck off didn't kill the
noise.
changing
out
the alternator fixed it, but we figure something else in
the
vehicle was
damaged/destroyed by the voltage spike, now causing the
intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition
capacitor, as
you mentioned. Also make sure that the owner didn't do
anything
stupid
like replace the resistor wires and plugs with solid
conductor
types.

in Houston

Hamilton Audio wrote:

thanks eddie! I would think that if it mucks up satellite tv, the am radio
trick will be far too noisy to be useful even 20 feet away

I've tried to use the process of elimination thing as much as possible. the
customer just cannot afford to keep replacing what turns out to be perfectly
good parts. we're down to the coil and the module in the ignition, neither
of which he'll buy unless we can guarantee it'll fix the noise.

whereabouts in texas are ya?

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
you could get you a little AM transistor radio and move it around the
car to see where the noise is coming from.. In the 70s I built a buncha
noise sniffers out of cheap AM radios that were built into headpohones
for my installers.

it works pretty good but maybe so good with this messed up car that
you might get too much noise... ;-)

You will have to figgure out by a process of eliminination whats causing
the problem... take the spark plug wires completely off one at a time
(the vehicle may still run with one wire missing)
or replace each piece of the ignition system 1 at a time
or ground each piece of the ign system 1 at a time

eventually you will find it
If not bring it on down here to Texas and lemme fix it up for ya


Eddie


Hamilton Audio wrote:

gotcha eddie...but...thats what I meant!! can you suggest exactly WHAT
in
the ignition system is causing the problem? I know that the stereo is
just
a magnet for this noise, and nothing I do to it will help...

what other vehicle-related items should I look for??

thaks eddie!

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
but if its bad enough to mess with TVS at a distance then there
is no hope for the high end stereo system!

I would figur out what the problem is with the car before you
could ever even attempt to do anything to the stereo to cure it.

is there anything not factory? High performance ignition for
instance?
I would guess there is something messed up in the ignition system!

Eddie

Hamilton Audio wrote:

eddie...the problem with the car IS the stereo noise!! if he didn't
have a
larger system, he wouldn't know about the noise (other than
disrupting
tv's), and he obviously wouldn't care about that! the only reason
he's
lookin for a fix is to cure the system noise.

??

Hamilton Audio
Car Audio, Security & Performance

"Eddie Runner" wrote in message
...
I would fix the problem with the car before worrying so much
about the stereo noise...

Sanitarium wrote:

Man you got me... Something's not working 'right' if its
emiting
enough
RF noise to disrupt TV reception in residential homes.

Try posting to the tempro.com forum

Sorry I cant be of more help.

Garrett

Hamilton Audio wrote:

nope...we replaced the plugs and wires here in the shop with
resistor
units
(after the noise started, but it didn't help). we're gonna
test
and
replace
the capacitor soon (time is an issue for this customer)
c'mon!
no
other
thoughts?

most of the noise faq's and such I've seen all focus and
centre
around
alternator noise. (arg!) I've done the "remove ground" and
see
what
happens, and the noise goes away, so its a power system
issue...not
being
induced in the signal (on the way in) or the speaker leads (on
the
way
out).

?

Hamilton Audio
Car Audio, Security & Performance

"Kevin McMurtrie" wrote in message

...
In article
,
"Hamilton Audio" wrote:

Did a pretty simple install in a customers vehicle last
week
(decent
head
unit, large 4 channel amp, door pods with 6.5s, and a pair
of
10's).
The
job went well till I fired up the engine!! The truck is a
1987 Ch
evy
reg
cab with carbed 350 and HEI ignition.

Its definitely not alternator whine. More of a loud
"buzz"
that
varies
slightly with rpm. What I did:

-- pulled the alternator belt and unplugged it. ran the
truck, no
cure
(needed a belt change anyway!)
-- aftermarket tach disconnected (thought it was
backfeeding),
no
cure
-- unplug the head unit, disconnect rcas, no cure.
(obviously
not
signal
related)
-- changed my 4 ga. ground to about 4 different solid
points,
none
helped
-- used jumper cables to ground back to the battery
temporarily,
no cure
-- changed out spark plugs and plug wires with fresh
resistor
type
units, no
cure

As a side note, this truck also causes interference in
televisions
as it
drives by, so its pumping off some extremely big rf noise!
The
last
thing
we're gonna try later on is replacing the capacitor in the
distributor
that
the manual says is for nothing more than RFI suppression.
Can
anyone
suggest anything else to look at for ignition noise? The
truck
has no
computers or anything in it.

Perhaps this may help...a while back (with the stock
system),
the
alternator's regulator failed, sending the output voltage
gauge
off the
end
(over 18 volts). at that moment, the factory
deck/speakers
began
buzzing
painfully loud. turning the deck off didn't kill the
noise.
changing
out
the alternator fixed it, but we figure something else in
the
vehicle was
damaged/destroyed by the voltage spike, now causing the
intereference.

any ideas??

Hamilton Audio
Car Audio, Security & Performance




An ignition problem would be my guess. Check the ignition
capacitor, as
you mentioned. Also make sure that the owner didn't do
anything
stupid
like replace the resistor wires and plugs with solid
conductor
types.