I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit. The
original speaker (a POS) failed, has a single voice coil, and it says 6
ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying around.
Each of the coils on the Cerwin Vega are 4 ohms. How should I hook this up
in the Sony box? Is it OK to hook up just one of the coils? Will that
sound OK ? Or is it necessary to hook up both coils in series ? Both in
series would be 8 ohms, which is more than the original POS speaker's 6
ohms, but using a single coil would be 4 ohm, which is less. What to do?

Any advice?

Thanks.

Try using both voice coils in series for 8 Ohms. This gives
you the best chance of not damaging the amp or the replacement
speaker.

WARNING #1: Your replacement subwoofer may not sound as good
as the POS the enclosure and electronics were tuned for.

WARNING #2: If you apply more power than it can handle, your
replacement speaker will fail.

Sped wrote:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit. The
original speaker (a POS) failed, has a single voice coil, and it says 6
ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying around.
Each of the coils on the Cerwin Vega are 4 ohms. How should I hook this up
in the Sony box? Is it OK to hook up just one of the coils? Will that
sound OK ? Or is it necessary to hook up both coils in series ? Both in
series would be 8 ohms, which is more than the original POS speaker's 6
ohms, but using a single coil would be 4 ohm, which is less. What to do?

Any advice?

Thanks.

Try using both voice coils in series for 8 Ohms. This gives
you the best chance of not damaging the amp or the replacement
speaker.

WARNING #1: Your replacement subwoofer may not sound as good
as the POS the enclosure and electronics were tuned for.

WARNING #2: If you apply more power than it can handle, your
replacement speaker will fail.

Sped wrote:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit. The
original speaker (a POS) failed, has a single voice coil, and it says 6
ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying around.
Each of the coils on the Cerwin Vega are 4 ohms. How should I hook this up
in the Sony box? Is it OK to hook up just one of the coils? Will that
sound OK ? Or is it necessary to hook up both coils in series ? Both in
series would be 8 ohms, which is more than the original POS speaker's 6
ohms, but using a single coil would be 4 ohm, which is less. What to do?

Any advice?

Thanks.

Try using both voice coils in series for 8 Ohms. This gives
you the best chance of not damaging the amp or the replacement
speaker.

WARNING #1: Your replacement subwoofer may not sound as good
as the POS the enclosure and electronics were tuned for.

WARNING #2: If you apply more power than it can handle, your
replacement speaker will fail.

Sped wrote:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit. The
original speaker (a POS) failed, has a single voice coil, and it says 6
ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying around.
Each of the coils on the Cerwin Vega are 4 ohms. How should I hook this up
in the Sony box? Is it OK to hook up just one of the coils? Will that
sound OK ? Or is it necessary to hook up both coils in series ? Both in
series would be 8 ohms, which is more than the original POS speaker's 6
ohms, but using a single coil would be 4 ohm, which is less. What to do?

Any advice?

Thanks.

In , on 01/03/04
at 03:19 AM, none@ (Sped) said:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit. The
original speaker (a POS) failed, has a single voice coil, and it says
6 ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying
around. Each of the coils on the Cerwin Vega are 4 ohms. How should I
hook this up in the Sony box? Is it OK to hook up just one of the
coils? Will that sound OK ? Or is it necessary to hook up both coils
in series ? Both in series would be 8 ohms, which is more than the
original POS speaker's 6 ohms, but using a single coil would be 4 ohm,
which is less. What to do?

Yes, taking care to phase them correctly, you could put the coils in
series to get 8 Ohms. This would minimize the possibility of damaging
something. If you connect the coils out of phase, there will be little
or no sound output because the coils will be pushing against each
other.

Overall I don't think this is a great idea. It's somewhat like
replacing a tire on your car with something that is 13" round. It might
work fine, or not.

If you are looking to get a thump for movies and this is an active
subwoofer, the result will probably thump. If this is a passive
subwoover (no built-in or dedicated amplifier), it is not likely to
work well for music.

-----------------------------------------------------------
spam:
wordgame:123(abc):14 9 20 5 2 9 18 4 at 22 15 9 3 5 14 5 20 dot 3 15
13 (Barry Mann)
[sorry about the puzzle, spammers are ruining my mailbox]
-----------------------------------------------------------

In , on 01/03/04
at 03:19 AM, none@ (Sped) said:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit. The
original speaker (a POS) failed, has a single voice coil, and it says
6 ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying
around. Each of the coils on the Cerwin Vega are 4 ohms. How should I
hook this up in the Sony box? Is it OK to hook up just one of the
coils? Will that sound OK ? Or is it necessary to hook up both coils
in series ? Both in series would be 8 ohms, which is more than the
original POS speaker's 6 ohms, but using a single coil would be 4 ohm,
which is less. What to do?

Yes, taking care to phase them correctly, you could put the coils in
series to get 8 Ohms. This would minimize the possibility of damaging
something. If you connect the coils out of phase, there will be little
or no sound output because the coils will be pushing against each
other.

Overall I don't think this is a great idea. It's somewhat like
replacing a tire on your car with something that is 13" round. It might
work fine, or not.

If you are looking to get a thump for movies and this is an active
subwoofer, the result will probably thump. If this is a passive
subwoover (no built-in or dedicated amplifier), it is not likely to
work well for music.

-----------------------------------------------------------
spam:
wordgame:123(abc):14 9 20 5 2 9 18 4 at 22 15 9 3 5 14 5 20 dot 3 15
13 (Barry Mann)
[sorry about the puzzle, spammers are ruining my mailbox]
-----------------------------------------------------------

In , on 01/03/04
at 03:19 AM, none@ (Sped) said:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit. The
original speaker (a POS) failed, has a single voice coil, and it says
6 ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying
around. Each of the coils on the Cerwin Vega are 4 ohms. How should I
hook this up in the Sony box? Is it OK to hook up just one of the
coils? Will that sound OK ? Or is it necessary to hook up both coils
in series ? Both in series would be 8 ohms, which is more than the
original POS speaker's 6 ohms, but using a single coil would be 4 ohm,
which is less. What to do?

Yes, taking care to phase them correctly, you could put the coils in
series to get 8 Ohms. This would minimize the possibility of damaging
something. If you connect the coils out of phase, there will be little
or no sound output because the coils will be pushing against each
other.

Overall I don't think this is a great idea. It's somewhat like
replacing a tire on your car with something that is 13" round. It might
work fine, or not.

If you are looking to get a thump for movies and this is an active
subwoofer, the result will probably thump. If this is a passive
subwoover (no built-in or dedicated amplifier), it is not likely to
work well for music.

-----------------------------------------------------------
spam:
wordgame:123(abc):14 9 20 5 2 9 18 4 at 22 15 9 3 5 14 5 20 dot 3 15
13 (Barry Mann)
[sorry about the puzzle, spammers are ruining my mailbox]
-----------------------------------------------------------

Sped wrote:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit.

We all know the a Sony unit, they have fine stats and are expensive or
cheap, have a port or none at all and are either active or passive.

The
original speaker (a POS) failed, has a single voice coil, and it says 6
ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying around.
Each of the coils on the Cerwin Vega are 4 ohms. How should I hook this up
in the Sony box? Is it OK to hook up just one of the coils? Will that
sound OK ? Or is it necessary to hook up both coils in series ?

With no more information doing that is what will most closely match what
was there.

Both in series would be 8 ohms, which is more than the original
POS speaker's 6 ohms, but using a single coil would be 4 ohm,
which is less. What to do?

Wire the coils in series and you will get what was there. If it has a
x-over and is passive, then frequency response should be about right
anyway, and if it is active and expects a load that is not less than 6
Ohms, then it will be "about right" to the righ side of acceptable
tolerance.

Any advice?

If this be a double chamber reflex construction, then don't, they rely
too closely on driver parameters to accept any replacement. If it is a
bass reflex construction then you should expiriment, my instinct is to
say: close the port and live happy ever after. If the cabinet is
undamped inside ex works (0.25 yen saved is 0.25 yen earned), then put a
bit of damping material in it. With bass reflex damping generally should
go along the walls, with a closed cabinet loosely fluffed up all inside.
There may be some exception some day, but I have yet to encounter the
bass cabinet that sounded better undamped than damped.

Thanks.

--
************************************************** *************
* \\\\\\\ Quality Ascii handcrafted by Peter Larsen /////// *
* \\\\\\\ My site is at: http://www.muyiovatki.dk /////// *
************************************************** *******

Sped wrote:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit.

We all know the a Sony unit, they have fine stats and are expensive or
cheap, have a port or none at all and are either active or passive.

The
original speaker (a POS) failed, has a single voice coil, and it says 6
ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying around.
Each of the coils on the Cerwin Vega are 4 ohms. How should I hook this up
in the Sony box? Is it OK to hook up just one of the coils? Will that
sound OK ? Or is it necessary to hook up both coils in series ?

With no more information doing that is what will most closely match what
was there.

Both in series would be 8 ohms, which is more than the original
POS speaker's 6 ohms, but using a single coil would be 4 ohm,
which is less. What to do?

Wire the coils in series and you will get what was there. If it has a
x-over and is passive, then frequency response should be about right
anyway, and if it is active and expects a load that is not less than 6
Ohms, then it will be "about right" to the righ side of acceptable
tolerance.

Any advice?

If this be a double chamber reflex construction, then don't, they rely
too closely on driver parameters to accept any replacement. If it is a
bass reflex construction then you should expiriment, my instinct is to
say: close the port and live happy ever after. If the cabinet is
undamped inside ex works (0.25 yen saved is 0.25 yen earned), then put a
bit of damping material in it. With bass reflex damping generally should
go along the walls, with a closed cabinet loosely fluffed up all inside.
There may be some exception some day, but I have yet to encounter the
bass cabinet that sounded better undamped than damped.

Thanks.

--
************************************************** *************
* \\\\\\\ Quality Ascii handcrafted by Peter Larsen /////// *
* \\\\\\\ My site is at: http://www.muyiovatki.dk /////// *
************************************************** *******

Sped wrote:

I'm replacing the 12" subwoofer speaker in a Sony subwoofer unit.

We all know the a Sony unit, they have fine stats and are expensive or
cheap, have a port or none at all and are either active or passive.

The
original speaker (a POS) failed, has a single voice coil, and it says 6
ohms on it.

I happen to have a 12" Cerwin Vega dual voice coil subwoofer lying around.
Each of the coils on the Cerwin Vega are 4 ohms. How should I hook this up
in the Sony box? Is it OK to hook up just one of the coils? Will that
sound OK ? Or is it necessary to hook up both coils in series ?

With no more information doing that is what will most closely match what
was there.

Both in series would be 8 ohms, which is more than the original
POS speaker's 6 ohms, but using a single coil would be 4 ohm,
which is less. What to do?

Wire the coils in series and you will get what was there. If it has a
x-over and is passive, then frequency response should be about right
anyway, and if it is active and expects a load that is not less than 6
Ohms, then it will be "about right" to the righ side of acceptable
tolerance.

Any advice?

If this be a double chamber reflex construction, then don't, they rely
too closely on driver parameters to accept any replacement. If it is a
bass reflex construction then you should expiriment, my instinct is to
say: close the port and live happy ever after. If the cabinet is
undamped inside ex works (0.25 yen saved is 0.25 yen earned), then put a
bit of damping material in it. With bass reflex damping generally should
go along the walls, with a closed cabinet loosely fluffed up all inside.
There may be some exception some day, but I have yet to encounter the
bass cabinet that sounded better undamped than damped.

Thanks.

--
************************************************** *************
* \\\\\\\ Quality Ascii handcrafted by Peter Larsen /////// *
* \\\\\\\ My site is at: http://www.muyiovatki.dk /////// *
************************************************** *******

On Sat, 03 Jan 2004 06:14:38 GMT, henryf wrote:

Try using both voice coils in series for 8 Ohms. This gives
you the best chance of not damaging the amp or the replacement
speaker.

WARNING #1: Your replacement subwoofer may not sound as good
as the POS the enclosure and electronics were tuned for.

WARNING #2: If you apply more power than it can handle, your
replacement speaker will fail.

Thanks for the reply. We'll wire them in series for 8 ohms.

On Sat, 03 Jan 2004 06:14:38 GMT, henryf wrote:

Try using both voice coils in series for 8 Ohms. This gives
you the best chance of not damaging the amp or the replacement
speaker.

WARNING #1: Your replacement subwoofer may not sound as good
as the POS the enclosure and electronics were tuned for.

WARNING #2: If you apply more power than it can handle, your
replacement speaker will fail.

Thanks for the reply. We'll wire them in series for 8 ohms.

On Sat, 03 Jan 2004 06:14:38 GMT, henryf wrote:

Try using both voice coils in series for 8 Ohms. This gives
you the best chance of not damaging the amp or the replacement
speaker.

WARNING #1: Your replacement subwoofer may not sound as good
as the POS the enclosure and electronics were tuned for.

WARNING #2: If you apply more power than it can handle, your
replacement speaker will fail.

Thanks for the reply. We'll wire them in series for 8 ohms.

On Sat, 03 Jan 2004 02:13:15 -0500, (Barry Mann) wrote:

Yes, taking care to phase them correctly, you could put the coils in
series to get 8 Ohms. This would minimize the possibility of damaging
something. If you connect the coils out of phase, there will be little
or no sound output because the coils will be pushing against each
other.

Overall I don't think this is a great idea. It's somewhat like
replacing a tire on your car with something that is 13" round. It might
work fine, or not.

If you are looking to get a thump for movies and this is an active
subwoofer, the result will probably thump. If this is a passive
subwoover (no built-in or dedicated amplifier), it is not likely to
work well for music.


Thanks for the comments. While using the Cerwin Vega sub may not be ideal,
it's the solution we're going with because the original speaker is blown,
and the Cerwin Vega is a quality speaker and is free. Spending money is
not an option.

The sony subwoofer unit is active (it has its own amp). Anyway, wiring the
coils in series for 8 ohms is how we'll do it.

On Sat, 03 Jan 2004 02:13:15 -0500, (Barry Mann) wrote:

Yes, taking care to phase them correctly, you could put the coils in
series to get 8 Ohms. This would minimize the possibility of damaging
something. If you connect the coils out of phase, there will be little
or no sound output because the coils will be pushing against each
other.

Overall I don't think this is a great idea. It's somewhat like
replacing a tire on your car with something that is 13" round. It might
work fine, or not.

If you are looking to get a thump for movies and this is an active
subwoofer, the result will probably thump. If this is a passive
subwoover (no built-in or dedicated amplifier), it is not likely to
work well for music.


Thanks for the comments. While using the Cerwin Vega sub may not be ideal,
it's the solution we're going with because the original speaker is blown,
and the Cerwin Vega is a quality speaker and is free. Spending money is
not an option.

The sony subwoofer unit is active (it has its own amp). Anyway, wiring the
coils in series for 8 ohms is how we'll do it.

On Sat, 03 Jan 2004 02:13:15 -0500, (Barry Mann) wrote:

Yes, taking care to phase them correctly, you could put the coils in
series to get 8 Ohms. This would minimize the possibility of damaging
something. If you connect the coils out of phase, there will be little
or no sound output because the coils will be pushing against each
other.

Overall I don't think this is a great idea. It's somewhat like
replacing a tire on your car with something that is 13" round. It might
work fine, or not.

If you are looking to get a thump for movies and this is an active
subwoofer, the result will probably thump. If this is a passive
subwoover (no built-in or dedicated amplifier), it is not likely to
work well for music.


Thanks for the comments. While using the Cerwin Vega sub may not be ideal,
it's the solution we're going with because the original speaker is blown,
and the Cerwin Vega is a quality speaker and is free. Spending money is
not an option.

The sony subwoofer unit is active (it has its own amp). Anyway, wiring the
coils in series for 8 ohms is how we'll do it.

On Sat, 03 Jan 2004 13:20:40 +0100, Peter Larsen
wrote:

We all know the a Sony unit, they have fine stats and are expensive or
cheap, have a port or none at all and are either active or passive.

This one doesn't look all that expensive. It has a port, its own
amplifier, and the box is maybe 2 cu. feet.


Wire the coils in series and you will get what was there. If it has a
x-over and is passive, then frequency response should be about right
anyway, and if it is active and expects a load that is not less than 6
Ohms, then it will be "about right" to the righ side of acceptable
tolerance.

We'll put the two coils in series and see how it sounds.


If this be a double chamber reflex construction, then don't, they rely
too closely on driver parameters to accept any replacement. If it is a
bass reflex construction then you should expiriment, my instinct is to
say: close the port and live happy ever after. If the cabinet is
undamped inside ex works (0.25 yen saved is 0.25 yen earned), then put a
bit of damping material in it. With bass reflex damping generally should
go along the walls, with a closed cabinet loosely fluffed up all inside.
There may be some exception some day, but I have yet to encounter the
bass cabinet that sounded better undamped than damped.

It's a simple box with a 10" hole for the speaker and a port, so I guess
that makes it a bass reflex speaker. Your advice about using damping
material is interesting. What sort of material is good for damping? Would
1" thick foam rubber be good?

Thanks for your advice.

On Sat, 03 Jan 2004 13:20:40 +0100, Peter Larsen
wrote:

We all know the a Sony unit, they have fine stats and are expensive or
cheap, have a port or none at all and are either active or passive.

This one doesn't look all that expensive. It has a port, its own
amplifier, and the box is maybe 2 cu. feet.


Wire the coils in series and you will get what was there. If it has a
x-over and is passive, then frequency response should be about right
anyway, and if it is active and expects a load that is not less than 6
Ohms, then it will be "about right" to the righ side of acceptable
tolerance.

We'll put the two coils in series and see how it sounds.


If this be a double chamber reflex construction, then don't, they rely
too closely on driver parameters to accept any replacement. If it is a
bass reflex construction then you should expiriment, my instinct is to
say: close the port and live happy ever after. If the cabinet is
undamped inside ex works (0.25 yen saved is 0.25 yen earned), then put a
bit of damping material in it. With bass reflex damping generally should
go along the walls, with a closed cabinet loosely fluffed up all inside.
There may be some exception some day, but I have yet to encounter the
bass cabinet that sounded better undamped than damped.

It's a simple box with a 10" hole for the speaker and a port, so I guess
that makes it a bass reflex speaker. Your advice about using damping
material is interesting. What sort of material is good for damping? Would
1" thick foam rubber be good?

Thanks for your advice.

On Sat, 03 Jan 2004 13:20:40 +0100, Peter Larsen
wrote:

We all know the a Sony unit, they have fine stats and are expensive or
cheap, have a port or none at all and are either active or passive.

This one doesn't look all that expensive. It has a port, its own
amplifier, and the box is maybe 2 cu. feet.


Wire the coils in series and you will get what was there. If it has a
x-over and is passive, then frequency response should be about right
anyway, and if it is active and expects a load that is not less than 6
Ohms, then it will be "about right" to the righ side of acceptable
tolerance.

We'll put the two coils in series and see how it sounds.


If this be a double chamber reflex construction, then don't, they rely
too closely on driver parameters to accept any replacement. If it is a
bass reflex construction then you should expiriment, my instinct is to
say: close the port and live happy ever after. If the cabinet is
undamped inside ex works (0.25 yen saved is 0.25 yen earned), then put a
bit of damping material in it. With bass reflex damping generally should
go along the walls, with a closed cabinet loosely fluffed up all inside.
There may be some exception some day, but I have yet to encounter the
bass cabinet that sounded better undamped than damped.

It's a simple box with a 10" hole for the speaker and a port, so I guess
that makes it a bass reflex speaker. Your advice about using damping
material is interesting. What sort of material is good for damping? Would
1" thick foam rubber be good?

Thanks for your advice.

Sped wrote:

that makes it a bass reflex speaker. Your advice about using damping
material is interesting. What sort of material is good for damping? Would
1" thick foam rubber be good?

It would not be my first choice, sheeps wool or polyester wadding comes
to mind, I don't know the "shop names" are over your way, here in
Copenhagen I'd enter the "ye olde loudspeaker diy shoppe" and ask for
acoustilux, but you could try it. The general issue is that "it has to
be lossy", and foam rubber generally just transmits.

Thanks for your advice.

--
************************************************** *************
* \\\\\\\ Quality Ascii handcrafted by Peter Larsen /////// *
* \\\\\\\ My site is at: http://www.muyiovatki.dk /////// *
************************************************** *******

Sped wrote:

that makes it a bass reflex speaker. Your advice about using damping
material is interesting. What sort of material is good for damping? Would
1" thick foam rubber be good?

It would not be my first choice, sheeps wool or polyester wadding comes
to mind, I don't know the "shop names" are over your way, here in
Copenhagen I'd enter the "ye olde loudspeaker diy shoppe" and ask for
acoustilux, but you could try it. The general issue is that "it has to
be lossy", and foam rubber generally just transmits.

Thanks for your advice.

--
************************************************** *************
* \\\\\\\ Quality Ascii handcrafted by Peter Larsen /////// *
* \\\\\\\ My site is at: http://www.muyiovatki.dk /////// *
************************************************** *******

Sped wrote:

that makes it a bass reflex speaker. Your advice about using damping
material is interesting. What sort of material is good for damping? Would
1" thick foam rubber be good?

It would not be my first choice, sheeps wool or polyester wadding comes
to mind, I don't know the "shop names" are over your way, here in
Copenhagen I'd enter the "ye olde loudspeaker diy shoppe" and ask for
acoustilux, but you could try it. The general issue is that "it has to
be lossy", and foam rubber generally just transmits.

Thanks for your advice.

--
************************************************** *************
* \\\\\\\ Quality Ascii handcrafted by Peter Larsen /////// *
* \\\\\\\ My site is at: http://www.muyiovatki.dk /////// *
************************************************** *******