Using a 4 channel amp to wire two speakers and sub-woofer

[Jim Robeson]

I have a four channel amp and I only need to wire in two speakers for the swim deck speakers. I was told that if I want to have a sub-woofer that I would need a separate amp for that. Is there not a way to use the four channel for the sub-woofer too?? Thanks.

 

[txav8r]

I think you can use those two channels together for the sub @Jim Robeson , I don't know the technical terms, but the power from the two channels can power a mono amp as one channel. Maybe one of the more knowledgable guys can direct the how's and what's.

 

[Jim Robeson]

Never mind, I found what I was asking about in a post by @TexasTea ... sounds like I just need to find a another amp.

 

[jcyamaharider]

@Jim Robeson Actually you should be ok to use the amp that you have, unless it only has one cross over for all 4 channels. And I wouldn't think that would be the case. 2 of the channels should have one crossover that you could put on full range or high pass filter , and on the other two channels I would bridge that side ( L+ and R- ) to use the power of both channels for the sub. Put that crossover on Low pass Filter. Should work just fine.


What Amp do you have?

 

[Jim Robeson]

@jcyamaharider ... It's a JVC but I'm not sure the model number.

 

[jcyamaharider]

It should have 2 sets of crossover settings

 

[Jim Robeson]

Thanks! I will look the next time I'm at the lake. Appreciate the input @jcyamaharider !

 

[OrangeTJ]

A 4 channel amp should work just fine for what you are trying to do. I do exactly that in my pickup - power a pair of separates in the front with 2 of the channels and bridge the other two to power a sub. Not complicated. In fact, I would prefer that setup to a 2 amp setup. KISS at work.

 

[jawsf16]

I use a four channel for my in boat speakers and a sub bridged. Another four channel bridged for tower speakers. Works great.