Ford Mustang Forum - View Single Post - Amp with how many watts?
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post #5 of (permalink) Old 11-02-2012
mtu245
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Usually people go with a little more power. As long as you, or your installer, set the gains on your amp accordingly to your sub. You should have no problem running more power. Usually its about 25% more power than your subwoofers rms power rating (ie. 100 watt rms sub @4ohm..with 125 watts rms @4 ohm from amp).

If you under power your subwoofer by a little...it might be ok. But too much isn't good either. If your sub asks for 150 watts rms try to equal it or be over by a bit. For the times you really crank up the volume to near max, is when your amp is going to be working extremely hard to get that full power to your sub. So if it can't give the sub all the power its asking for, it can start to clip or distort. Or better yet you will over work it in the future and it may quit or overheat.

My 10'' is a 350-500 watt rms @ 2ohms. Right now the amp puts out 700 watts rms x 1 @ 2ohms. Its a lot more than needed. But the gains on the amp are set accordingly and the amp doesn't need to work nearly as hard to power the sub. My front speakers have a little more too. 110 watts rms x 2 @ 4ohms, and I'm running them with 125 watts rms x 2 @ 4 ohms. Hope that helps you out a bit.

Goodluck!

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