Short'n Sweet: Trying to get a 4ohm dvc sub down to 2ohms to a mono amp that is wired in parallel internally(the amp).

I'm helping my little brother setup a stereo in his Z. I got him the same sub as I have, Rockford Fosgate P3 4OHM DVC and a Rockford Fosgate P3001 Mono amp.

According to what I've read, the amp is wired internally in parallel, and produces the most power at 2ohms. It has 2 outputs for speaker wires.

To get this to 2 ohms, shouldn't I simply wire each coil to each terminal since this is a mono amp that is wired in parallel already? (basically creating a bridge if it were a 4 channel amp, bringing the sub down to 2ohms)

Thanks for any/all help & ideas. Y'all have a great holiday weekend!

 

Two ways you can do it

1. Run each voice coil directly to the amp

2. connect the positives on on the sub together and run a single positive to the amp, connect the negatives on on the sub together and run a single negative to the amp

You wont be able to tell the difference either way, but the first one is technically better since you have more wire going from the amp to the sub.

 

Okay, right now I have the sub wired in parallel to give a 2 ohm load and connecting it to 1 set of outputs on the RF amp. Wiring the coils individually won't be giving me any more output from the amp, right?

The only thing that's confusing me here is the fact the amp is already wired parallel so if I have the sub wired parallel am I not getting a 1ohm load?

 

I think I got it. As long as I wire the sub parallel and hook to 1 terminal I should be getting a 2 ohm load. If all else fails I will bust out the multimeter

 

http://www.rockfordfosgate.com/rftech/woofer_wizard.asp

 

wire each positive connection on sub directly to positive speaker output on amp

do the same with the negative wire each negative connection on sub to the negative output on the amp

then you have 2 ohm

 

I know how to wire a 4ohm dvc to 2ohms My question was about the amp being bridged internally.

Anyway I have both coils wired up directly to the amp on the positive + negative. Thanks guys!

 

You are overthinking it. Basically both positive connections on the amp are connected together, same for the negative. Its not "bridged" internally just connected together(more places to connect to). The amp can only see what the sub is wired up as.

One reason they probably did it that way rather than a single positive and negative is that they use the same chassis for the two channel amp.