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<blockquote data-quote="Reggie Lives" data-source="post: 4389967" data-attributes="member: 549549">I&#039;m fairly new to car audio, but just finished installing an amp and subwoofer into my truck.&nbsp; I was pleased with the sound of the sub, considering I built the box and it was my first attempt.After driving around for a few days with plain mdf, I decided to paint the box and stuff it with more polyfill (sub manufactorer calls for 24liters with 16oz polyfill).When I droped it back into my truck, it&#039;s significantly weaker.&nbsp; With the gains on the amp and HU maxed out, and bass set to +5db on the HU, it now hits as hard as it did with only my amp gains set fairly high and a flat EQ setting from my HU.Could too much polyfill be causing this problem?&nbsp; I went from about 5oz to the recommended 16 when I noticed the difference.&nbsp; Or is it possible I messed up my amp when I re-installed it?&nbsp; The remote lead was poorly crimped to begin with, and when i went to unscrew it a few sparks flew.&nbsp; But the amp still runs...is it possible to damage an amp so that it still runs, just weaker output?Also, I havn&#039;t trimmed down any of my wires (power, ground, remote lead, rca) because I&#039;m still not 100% sure on the amps placement.&nbsp; If those wires are too close to each other, would it affect the output, or just contribute to ground noise?I checked to make sure the speaker wire wasn&#039;t accidently switched, and fooled around with the phases and rca connections.I&#039;m at a loss.</blockquote>

[QUOTE="Reggie Lives, post: 4389967, member: 549549"] I'm fairly new to car audio, but just finished installing an amp and subwoofer into my truck. I was pleased with the sound of the sub, considering I built the box and it was my first attempt. After driving around for a few days with plain mdf, I decided to paint the box and stuff it with more polyfill (sub manufactorer calls for 24liters with 16oz polyfill). When I droped it back into my truck, it's significantly weaker. With the gains on the amp and HU maxed out, and bass set to +5db on the HU, it now hits as hard as it did with only my amp gains set fairly high and a flat EQ setting from my HU. Could too much polyfill be causing this problem? I went from about 5oz to the recommended 16 when I noticed the difference. Or is it possible I messed up my amp when I re-installed it? The remote lead was poorly crimped to begin with, and when i went to unscrew it a few sparks flew. But the amp still runs...is it possible to damage an amp so that it still runs, just weaker output? Also, I havn't trimmed down any of my wires (power, ground, remote lead, rca) because I'm still not 100% sure on the amps placement. If those wires are too close to each other, would it affect the output, or just contribute to ground noise? I checked to make sure the speaker wire wasn't accidently switched, and fooled around with the phases and rca connections. I'm at a loss. [/QUOTE]

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