BRIDGING TWO AMPS INTO ONE

[quarterboy25]

Can you bring two 2-channel amps to power one subwoofer? If so, does anybody know the impedence level of this?

 

[LOUDSHO92]

No it can not be done nor would I try it. Certain Pioneer amps have this ability but this is only after you physically join the amps and connect certain wires. It is their premeir series amp that can do this.

 

[Chris Benvie]

why don't you sell both amps and by one big one??

 

[Guido]

Is the a DVC or an SVC? If it only has one voice coil, then I agree: Not a good idea. If it has two voice coils, then you can. Just use each amp to power each set of coils. Of course, I would only do this if I had two identical amps.

-***** (Mobile Dynamics, here I come...)

 

[Guido]

Forgot the second part of the question:

If you use an independent amp setup with a DVC, the sub will operate at it's normal impedence. If that is four OHMS, then it'll operate at four, whereas if you used one amp and wired the voice coils in series it would be eight OHMS or two OHMS in parallel.

-***** (Just got up and is forgetful...)

 

[quarterboy25]

Both of the amps are the same thing. (same brand, same wattage power. So you're saying that if my subwoofer has dual voice coils, then I can do it.
Right?

 

[Guido]

As long as it's a DVC and two identical amps, yes you can.
Actually, now that I think about it, you could to it with one only amp, too, as long as it's a multi-channel amp, i.e. one channel to each voice coil with a two-channel amp or a four-channel amp bridged to two channels.

-***** (Wishes he had a DVC sub...)

<small>[ August 04, 2002, 10:29 PM: Message edited by: ***** ]</small>

 

[V8BRICK]

"as long as it's a multi-channel amp, i.e. one channel to each voice coil with a two-channel amp or a four-channel amp bridged to two channels."

orrr you could bridge the 4ohm dvc to a 1ohm stable amp

orrr even better a 2ohm dvc bridged to a 1/4ohm stable amp thumbs_u

 

[NiNeTy Fo SHO]

....thats not quite right....
it you bridge 2-2 ohm voice coils together you get 1 ohm. trust me... thumbs_u

 

[V8BRICK]

"it you bridge 2-2 ohm voice coils together you get 1 ohm. trust me"

yes true, but then bridge that 1ohm to a 1/4ohm stereo stable amp then you have .5ohm load

 

[NiNeTy Fo SHO]

the ohm rating on any amp has nothing to with what ohm the amp will run at. that all depends on the ohm rating of the speaker(s) you hook up to it. (the ohm rating on the amp just tells you how low of resistance it can take without overheating/frying.)
to be able to run you amp at .5 ohm, you will need 4-2ohm voice coils, or 8-4ohm voice coils...

 

[V8BRICK]

"to be able to run you amp at .5 ohm, you will need 4-2ohm voice coils, or 8-4ohm voice coils"

this is true if you're running this on a single channel. I'm talking about bridging a 2 channel amp, so if you take the 8-4ohm voice coils (.5ohm)and bridge your 2 channel amp to run them, then you have .25ohm load.

An example of an amps that can carry this load RELIABLY, are the Phoenix Gold MS- series:

http://www.phoenixgold.com/webfaq/MS_MPS.htm

"the ohm rating on any amp has nothing to with what ohm the amp will run at"

I was merely showing an example of an effective and reliable way to use a single DVC sub BRIDGED to a 2 channel amp. Granted you're going to shell out some big bucks for an amp, but "unregulated power supply" has a nice ring to it

 

[NiNeTy Fo SHO]

bridging them to a single channel or running them all on the left channel really doesnt matter due to the fact that to find what your running at, you look at the ohm on the speakers and how you have them wired...

...BUT....believe what you want. To tell you the truth, it really dont bother me how you look at it. I aint postin' about it anymore.