Higher powered subwoofer on lower powered stereo amp

Apr 4, 2018
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I have a sony xm GTX6040 which has a output of 60-70 watts rms (4-2ohms) per channel and a pioneer subwoofer which has a rms rating of 400 watts at 4ohms. I am planning to bridge the sub on channel 1 and 2 to get 140 watts from the amp.
Would there be any problem that i might face with that configuration and if yes, what are those?
 

faalin

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Feb 22, 2012
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what is the model of the pioneer subwoofer? I dont see any reason you couldnt bridge channel 1 and 2 at 4ohms to get 120w. Im more interested in the sub to see if its a single or dual voice coil that you might get it down to 2ohms which will give your sub a little more power.
 

faalin

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Feb 22, 2012
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what is the model of the pioneer subwoofer? I dont see any reason you couldnt bridge channel 1 and 2 at 4ohms to get 120w. Im more interested in the sub to see if its a single or dual voice coil that you might get it down to 2ohms which will give your sub a little more power.
 
Apr 4, 2018
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It is a Pioneer champion series TS-W309S4 and it is a single coil 12 inch sub.
And if it was a dual coil would i be able to bridge one coil on channel 1 and 2 and another coil on channel 3 and 4? ( just asking )
 

faalin

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Feb 22, 2012
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If the Sub was a dual 4ohm voice coil you could run them in parallel and drop the load on the amp down to 2 ohms giving you 140w instead of 120w, would you know the difference.... probably not but the option would have been there.

trying to run a 2 bridged channels one to each voice coil would have been a lot harder, you have to get both channels set exactly the same.
 
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