Turn on/off "pop"

[noonej21 10+ year member]

I know this has been asked many times but my situation seems a little different. Current setup is a PPI PC4100 running factory speakers(an upgrade is soon to come) and a PPI PC2150 powering an eclipse 8122 at 4 ohms mono.

As far as grounding I have a 4 gauge wire connected to the rear set belt bolt(paint sanded away) running to a distro block, both amps are using 8 gauge power/ground, I am also grounding my head unit to the same area. The popping is only coming from my sub. I have unhooked the sub amp and there is no popping so I have isolated it to this amp. I have been able to reduce to "loudness" of the popping through reducing the gains. This to me sounds like a grounding issue, does this make sense? Should I consider running a separate ground from this amp to the common ground point, maybe increase the power and ground wire to 4 guage?

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[dinty01 10+ year member]

is the pop when you turn your system on/off? or does it "pop" whenever it is on?

 

[Rich B 5,000+ posts]

Sounds like you need to delay the turn on/off signal.

You might look here-

http://www.davidnavone.com/amp.htm

 

[angrytrucker78 10+ year member]

I've only had a turn off pop since I got this stupid 880 PRS

 

[dinty01 10+ year member]

yea, my guess would be that the ground(s) are fine, its just the circuitry(sp?) inside, some amps have whats called soft start (i think it is) technology where it prevents the turn on/off pops, I dont think I got the name of it right but that may be your problem, to eliminate that you could use one of the products from the link above or use a relay, click here to see how to hook one up to cure your problem, let us know what you chose and if it works---Dinty

This is also my guess, Im not 100% sure it would fix your problem but this is what Id do first to fix it(after checking all the wires and connections of course).

 

[Rich B 5,000+ posts]

I've only had a turn off pop since I got this stupid 880 PRS

Theres a thread on this site that details how to ensure am 880 PRS is grounded properly.

(Seems to be a problem with that model.)

Might help.

 

[angrytrucker78 10+ year member]

Theres a thread on this site that details how to ensure am 880 PRS is grounded properly.
(Seems to be a problem with that model.)

Might help.

Yeah I know. I just don't feel like tearing my dash apart once again to fix another problem with it.

It's funny, when I first got the 880 I had zero problems, then all of a sudden I get horrible alt whine, fix that, now I have turn off pop. Time to go back to Alpine or try the likes of Eclipse, Kenwood, Nak, ect..

 

[ultimate157 5,000+ posts]

Just curious: Is the pop a noise signal being sent through the RCA's from the HU when it is first turned on? Never knew the cause...

Mine popped for the first 5 times I used my new setup, then magically went away.

 

[noonej21 10+ year member]

is the pop when you turn your system on/off? or does it "pop" whenever it is on?

The "pop" was a lot louder when I turned the car off or when I would use some of my decks functions(track skipping, source selection...) than it was when I would first turn the car on. The odd thing is that I switched out my amp with anther PPI that I have. PPI PC1400 and there was nothing. Granted this amp was not being stressed nearly as much as the other one, this amp is one of the few older PPI's that are stable to down to 2 ohms where as my current sub amp can only go down to 4 ohms. That was why I questioned the ground with the 2150 I was giving the sub 600 watts at 4 ohms where as the 1400 was giving the sub 400 watts at 4 ohms.