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<blockquote data-quote="Frankensuby" data-source="post: 2445072" data-attributes="member: 569869">K guys, up until 1 hour my system was sounding fantastic.&nbsp; I even installed a borrow amp and installed my sub, and it sounded great (minus the rattles)So I decided to tune my system (specifically my sub) so that I would not damage my driver.&nbsp; So I follow the Jl Tutorial to the dot, but I could not for the life of me get the DMM to pull ANY voltage. In fact, the DMM was putting the amp into protect mode everytime I tried it.I then tried something I had heard someone say earlier, and touch the ground to the chassis, and the power to the red DMM stick (All on the sub amp, not touching the multichannel.).&nbsp; I get a HUGE static noise through the Mid ranges (and tweets I guess) even though I was only working with the Subwoofer amp.//content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gifNow, even with the Sub amp and ground COMPLETELY removed from the car, I have a huge engine whine (attributed to ground loop isolation usually) and now the tracks blip/thud whenever I change them, even when the same tracks did not before.Only way I can stop the whine is if I shut the HU off.So did I kill the Deck?&nbsp; The RCA&#039;s? Or the Amp?&nbsp; I&#039;m really really pissed right now and frustrated at the same time.Please help.//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif</blockquote>

[QUOTE="Frankensuby, post: 2445072, member: 569869"] K guys, up until 1 hour my system was sounding fantastic. I even installed a borrow amp and installed my sub, and it sounded great (minus the rattles) So I decided to tune my system (specifically my sub) so that I would not damage my driver. So I follow the Jl Tutorial to the dot, but I could not for the life of me get the DMM to pull ANY voltage. In fact, the DMM was putting the amp into protect mode everytime I tried it. I then tried something I had heard someone say earlier, and touch the ground to the chassis, and the power to the red DMM stick (All on the sub amp, not touching the multichannel.). I get a HUGE static noise through the Mid ranges (and tweets I guess) even though I was only working with the Subwoofer amp.[IMG]//content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif[/IMG] Now, even with the Sub amp and ground COMPLETELY removed from the car, I have a huge engine whine (attributed to ground loop isolation usually) and now the tracks blip/thud whenever I change them, even when the same tracks did not before. Only way I can stop the whine is if I shut the HU off. So did I kill the Deck? The RCA's? Or the Amp? I'm really really pissed right now and frustrated at the same time. Please help.[IMG]//content.invisioncic.com/y282845/emoticons/crap.gif.7f4dd41e3e9b23fbd170a1ee6f65cecc.gif[/IMG] [/QUOTE]

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