Thread: car speaker ohms?

or if your amp can do bridged you can also bridge the ouptuts of your 4chann to 2chann. So let's say it's 35X4 @ 4ohm, bridged, it might be 70Wx2@4ohm.
Usually most amps say you can only do bridged mono but it's bull... all you have to do to get bridged stereo output is use y splitters and attach your Left line level input from your deck to the FRONT L and R on your amp, and your right to the amp's REAR L and R. Just go to radioshack and buy a couple of RCA Y splitters.

The advantages is that you are using full power from all channels of your amp and I belive you can get higher output doing that way than running it in parallel. I haven't quite figured out the math yet on that...but that's what I plan to do with my 4chn amp.

[ 07-20-2001: Message edited by: moahdib ]

If its 35w x 4 RMS that's still quite a bit of power for front and rears unless you want it like SUPER loud.

Is the power rating that manufacturers say for example 35X4 into 4ohm (0.08%THD)...is that RMS?? Sometimes they would also give peak output but I rarely pay attention to that.

My front composites ( Polk EX 600) have continuous power rating of 60W@4ohm so I am stereo bridging my alpine mrp-f257 to put 70Wx2 into 4ohm. I asssume I can do that without blowing them right?

My alpine MRV-F300 will be running the rear 3-way 6X9 speakers stereo bridged also...80WX2 @4ohm.
I feel safer running my speakers at 4ohm rather than paralleling them and using 2ohm load to get higher output. This way i don't risk blowing my amp.

I have to see tonight when I get those Y splitter from ratshack and re wire the speakers... see what happens.

That'll be a loud system there moahdib.

I'm running JL audio's all around (in the cabin) and I just run them off an alpine mrv-f307, 30x4 rms amp.. although my test sheet from alpine said it was 34.5 x 4 rms.

Gotta love alpine v12's.