One amp for sub + 2 speakers

spinhead · 05-21-2011, 04:02 PM

I've got 2 polk speakers plus a focal 27KX, which takes up to 300W RMS at 4 ohms. I'm thinking of getting a JL HD600/4 amp, bridging two of the inputs and running the speakers and sub off the same amp. Anything wrong with this?

bigaudiofanat · 05-21-2011, 07:32 PM

DO not run speakers off one channel, unless i read that wrong. Each set of speakers meaning left channel and right channel needs their own output from a amp. Maybe look at the alpine pdx5, the jl will work as well just bridge the two channels for the sub and not the speakers.

TWYNBYZ · 05-21-2011, 07:53 PM

I'm doing the exact same setup except I have JL separates up front and a single 8w3v3 sub. I'll be driving the entire system with a single JL HD 400. The front two channels will run the separates up front and the two rear channels will be bridged to run the sub.

90 ST · 05-21-2011, 08:24 PM

Quote:

Originally Posted by bigaudiofanat

DO not run speakers off one channel, unless i read that wrong. Each set of speakers meaning left channel and right channel needs their own output from a amp. Maybe look at the alpine pdx5, the jl will work as well just bridge the two channels for the sub and not the speakers.

I think you read that wrong, Yes you can use a 4ch amp as a 3ch. As mentioned ch 1+2 go to the fronts, then ch 3+4 get bridged for the sub. just make sure you turn the X-overs on the amp to the right settings.

05-21-2011, 04:02 PM	#1 (permalink)
spinhead Base Member Join Date: Nov 2009 Location: N. Bethesda, MD Posts: 162 Drives: 09 370z BS 6MT Rep Power: 3387	One amp for sub + 2 speakers I've got 2 polk speakers plus a focal 27KX, which takes up to 300W RMS at 4 ohms. I'm thinking of getting a JL HD600/4 amp, bridging two of the inputs and running the speakers and sub off the same amp. Anything wrong with this? __________________ Consequences will never be the same.

05-21-2011, 07:32 PM	#2 (permalink)
bigaudiofanat Car Audio Installer Join Date: Jun 2009 Location: Magnolia DE Posts: 8,342 Drives: 2012 Infiniti G37x Rep Power: 852	DO not run speakers off one channel, unless i read that wrong. Each set of speakers meaning left channel and right channel needs their own output from a amp. Maybe look at the alpine pdx5, the jl will work as well just bridge the two channels for the sub and not the speakers. __________________ Need help with car audio or electronics? Let me know!! Need Help Let Me Know Direct email address reimermatt@gmail.com Owner of: Dynamic Mobile Audio Follow me below https://www.facebook.com/Dynamicmobileaudio/

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05-21-2011, 07:53 PM	#3 (permalink)
TWYNBYZ Base Member Join Date: Jan 2011 Location: S. Cali Posts: 229 Drives: 2013 Pearl White GTR Rep Power: 14	I'm doing the exact same setup except I have JL separates up front and a single 8w3v3 sub. I'll be driving the entire system with a single JL HD 400. The front two channels will run the separates up front and the two rear channels will be bridged to run the sub.