another sub wiring question

[Mr. Death]

I just aquired a 2 channel amp to power my DVC 4 OHM sub. The load coming from my sub is at 2 ohms with the current wiring. My amp is bridgeable into 4 ohms and 2 ohm stable(whaterever that means!). Will this work or do the ohms have to be the same?

[b16a3sol]

there are a few things we need to know in order to determine which is the best way to wire your sub to your amp.

1.) power rating of sub
2.) power rating of amp at 8 ohms
3.) power rating of amp at 4 ohms
4.) power rating of amp at 2 ohms

if the rating of the sub matches the amp at 2 ohms, then keep the same wiring configuration you have now and enjoy loud music. if the amp rating is a significant amount higher than the sub, then wire the sub in series and enjoy moderately loud music.

one thing i am not sure about, is whether you can wire one voice coil to one channel, and the other to the other channel. if the two signals are off from each other, they will end up fighting each other and the sub will not be as loud as it should.

in order to get a 4 ohm load, you will need either replace the sub you have now, or get another dual voice coil sub. if you get another dual voice coil sub, wire the voice coils on each sub in parallel, then wire the subs in series with the amp bridged.

[AirAllen01]

one thing i am not sure about, is whether you can wire one voice coil to one channel, and the other to the other channel.

No you can't. If you can give us the model number of the amp and the subs, or the power rating for both, then we can help. Until then, we can't give you the best advice.

[b16a3sol]

Originally posted by AirAllen01


No you can't.

learn something new every day.

[AirAllen01]

learn something new every day.

Know what you mean. Me too.

[PaulD]

actually, you can do that ...... but you need to be good at level matching the amps, or the speaker won't last long

[AirAllen01]

Some people can, and some people can't. I prefer to go ahead and tell them no because most ruine their speakers doing that. If you can, then you can go for it.

[b16a3sol]

its seems like it should be fairly straight forward process.

1.) hook up one amp and set a gain level
2.) determine the current leaving amp with DMM
3.) unhook amp and wire up the other amp
4.) adjust gain until current is at same amperage as original amp
5.) wire both amps up and enjoy the music

the part that i would be lost on is how to determine where you want the first amps gain to be set at.

[PaulD]

actually the level setting can be even easier than that ....... feed an inverted signal to one of the amps - then just adjust the levels (while both amps are playing) so the speakers doesn't move at all. Remember to use fairly low signal level for this - and THE SIGNAL MUST BE MONO.

[b16a3sol]

Originally posted by PaulD
actually the level setting can be even easier than that ....... feed an inverted signal to one of the amps - then just adjust the levels (while both amps are playing) so the speakers doesn't move at all. Remember to use fairly low signal level for this - and THE SIGNAL MUST BE MONO.

very nice idea...