Mixing Ohm loads

[coobur 10+ year member]

I have a 4 channel amp I know runs stable at 2 Ohms with 2 sets of crossover/contols. All my speakers are 4 Ohm. I know I could just go 4x4 ohms or 2x2 ohms but I don't want that much power going to my front speakers. Can I run 3 channels, 1 at 2 ohms using 2 channels bridged, and then 2 at 4 ohms for my front speakers? My guess is no, but I'm not sure. Do you guys know?

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[helotaxi 5,000+ posts]

If I understand your question correctly, the answer is most likely no. I assume you want to run a pair of subs off the bridged channel Most 4 channel amps are not stable at 2 ohms when bridged. If yours is one of the few that is then go for it. What amp is it? The answer to that will help us give you a more accurate and definitive answer.

 

[coobur 10+ year member]

It is a gs redline 4 channel. GS 4300S. I know it works at 2 ohms bridged so I was just wondering if I could mix ohm loads like that. The 2 ohm part for back speakers and the 2 4 ohm parts for fronts.

 

[helotaxi 5,000+ posts]

Why do you want so much power going to your back speakers? Also by bridging the amp you will be running a mono signal to the rear speakers.

That being said, if that's what you want to do and you know the amp is 2 ohm mono stable, yes, you can run it that way.

 

[sumone 10+ year member]

anyone know if the usx4065 is stable @ 2ohms bridged?

 

[n2audio 5,000+ posts]

No, the US isn't.