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<blockquote data-quote="DaveH" data-source="post: 8537348" data-attributes="member: 671755">This is my first time posting here, but i&#039;m hoping someone has come across the problem i&#039;m having and can help.I used to work in a car a car audio shop when i was younger so i know a bit, but this has me stumped.I&#039;ll get right to it.basically, i have a 4 channel amp running 2 sets of component speakers and a monoblock amp installed for my sub.&nbsp; When i turn the bass level up for the sub either from the deck or from the sub amp gain, my 4 channel goes into protection mode every time the bass hits, but the sub keeps playing(it doesn&#039;t go in protect).&nbsp;&nbsp; The 4 channel works flawlessly powering all 4 speakers if my sub is turned off from the deck or unplugged from the box.I&#039;ve tested everything i could think of.&nbsp; So my common grounding point for both amps has low resistance.&nbsp; I even ran a zero gauge from my negative battery terminal to a distro block for both amps.I tested the voltage on both amps and they are operating where they&#039;re suppose to be at.still did it.Next i eliminated all the variables i could thing of from the 4 channel, i unplugged all the RCA&#039;s and speaker wire so just the POWER, GROUND and REMOTE are hooked up.&nbsp; Then i turned down all the gains on the 4 channel to zero.Still did it.Next i turned down the gain on my sub amp, but kept the sub level maxed out on the deck.still did it..I then checked the resistance from the grounds again just to see what it was.&nbsp; the 4 channel was what it usually was, but when i put the probe on the sub amp ground terminal it read funny...the resistance would clime really hight the more i turned the volume up?I&#039;m not very good with resistance stuff so i&#039;m hoping someone can maybe chime in and give me some ideas?All i have is either my mono block amp is messed up, or the sub itself it going?</blockquote>

[QUOTE="DaveH, post: 8537348, member: 671755"] This is my first time posting here, but i'm hoping someone has come across the problem i'm having and can help. I used to work in a car a car audio shop when i was younger so i know a bit, but this has me stumped. I'll get right to it. basically, i have a 4 channel amp running 2 sets of component speakers and a monoblock amp installed for my sub. When i turn the bass level up for the sub either from the deck or from the sub amp gain, my 4 channel goes into protection mode every time the bass hits, but the sub keeps playing(it doesn't go in protect). The 4 channel works flawlessly powering all 4 speakers if my sub is turned off from the deck or unplugged from the box. I've tested everything i could think of. So my common grounding point for both amps has low resistance. I even ran a zero gauge from my negative battery terminal to a distro block for both amps. I tested the voltage on both amps and they are operating where they're suppose to be at. still did it. Next i eliminated all the variables i could thing of from the 4 channel, i unplugged all the RCA's and speaker wire so just the POWER, GROUND and REMOTE are hooked up. Then i turned down all the gains on the 4 channel to zero. Still did it. Next i turned down the gain on my sub amp, but kept the sub level maxed out on the deck. still did it.. I then checked the resistance from the grounds again just to see what it was. the 4 channel was what it usually was, but when i put the probe on the sub amp ground terminal it read funny...the resistance would clime really hight the more i turned the volume up? I'm not very good with resistance stuff so i'm hoping someone can maybe chime in and give me some ideas? All i have is either my mono block amp is messed up, or the sub itself it going? [/QUOTE]

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