Speaker Pop

[cherrington17]

I just got a set of component speakers in, new amp (new to me, its been used and is several years old) and everything seems to be working fine, except the speakers pop when i turn the system off.

The system is connected through my remote wire on the headunit, so the speakers are powered via the amp, when the h.u turns on.

what would cause this? from what i've researched its caused cuz the h.u turns off quicker then the amp, and then the little extra power it has, has to go somewhere...

so if thats the case... how do i stop this?

[Onewing91]

It's not a bad thing, its just a random pop of energy released by the amp, shouldn't cause any damage, but I suppose if you installed a switch (or use amp power on the h.u.) and turn it off before turning off the car every time, it would work too...

[Ryan from Ohio]

You need a soft turn off.

Get one of the small relays from Radio Shack and wire it into your remote and a 12V constant source. Or buy a remote saver from me (same relay all wired up in a box).

[lonnie]

Play with the gains first before buying stuff. I would use that as a last resort. But having xover and amp gains to high can cause a pop in the speakers.

Look at the grounds too! It could very well be a problem in the power supply of the amp causing some dc to bleed back to the speakers.

Putting a switch or a relay will hide the problem but it wont tell you what is causing it.

[cherrington17]

Originally Posted by Ryan from Ohio

You need a soft turn off.

Get one of the small relays from Radio Shack and wire it into your remote and a 12V constant source. Or buy a remote saver from me (same relay all wired up in a box).

how would wiring a relay into the line stop that? from what i know, relays are just electric switches..

i'll play with the gains today. one is all the way up and the other is about 3/4... so i'll try turning those down. I know the connections on the amp are all solid. I actually put spade tongues on every connection just so i wouldn't have to worry about that.

as for the ground, i have a VERY solid ground, but is 1800W (ran through 2 8ga power wires) too much for one 8ga ground wire?

[cherrington17]

ok, went out and tweaked the settings... and its still there, regardless of gains....

so.... just the amp turning off too slow, as per the h.u? I'd prefer to NOT have to put a switch on that one, since it powers the 4 corner speakers...


i guess that means i just have to live with it??

[cavaliers60]

It might just be a worn out amp. Older amps tend to do that. I have an amp that's 10 years old and it does that. Not a car amp, but same thing.

[lonnie]

Sounds like there is some DC bleeding in there from the power supply, or maybe from the power supply to the amplifier section, in any event try what Ryan was talking about at least you wouldn't have to worry about a switch, and they also have those relays for the speakers to cut them off before the amp...some kind of timed relay I saw it on the internet earlier. Is it happening in all just the front and rears or the subs or both? It could very well be isolated in one amplifier, in which case I would try to move the wires to a different amp and see if it follows if so then that is possibly your problem. Something else you could look at is the Dc offset on the driver. If you have a multimeter then set it to milivolts and read the voltage across the driver. So lets say 20mv is a good level then your source (HU) should put out no more then 2mv assuming you amp has a gain of 10. Depending on if you still have the front tore up or not read the dc on the out put to the amp, then set the gain to around ten if its possible to get there and read the offset on the drives should be close to the head units dc times 10 or whatever you set the gain at. If its really high then the amp definately has a problem.

[Ryan from Ohio]

Actually just buy this guys instead:

http://www.davidnavone.com/cart.asp?24&cat=1

[lonnie]

I like the the adjustable one 24.00bucks isn't bad if it lives up to the hype, but what is shipping like?