Loud bass pop from sub after car turns off, why?


Silver Member
Username: Bradgman

GAlVeStoN, Tx Usa

Post Number: 163
Registered: Jan-06
Does anyone know why the sub makes a loud bass pop right after I turn my car off? Is it the RCA's or the Ground?

Silver Member
Username: Night_mirage


Post Number: 276
Registered: Jan-06
its RCA ..IT happened with me .. and i changed the RCA .. its gone ..

Try better RCA .

Gold Member
Username: Southernrebel

Monroe, Louisiana USA

Post Number: 2805
Registered: Mar-04
it could also be that your amp doesnt a good 'soft turn on' circuit. lower end amps get that pop sound went the HU powers up or down.


Bronze Member
Username: Sweatyogre

Erie, PA USA

Post Number: 89
Registered: Mar-06
I had that problem, until I put a toggle switch on the remote power wire and turned off my sub before my HU.

Silver Member
Username: Rideredder

Cornell, IL USA

Post Number: 290
Registered: Sep-05
I installed a system for my friend and it did that too. He was using a BD series RF amp with soft turn off and Monster Cable RCA's. His would do it when you turn it on, off, and whenever he changed the radio station or CD.

Silver Member
Username: Alteraudiousa


Post Number: 723
Registered: Jan-06
usually its either the amp or the HU itself. I know the Eclipse 8443 was notorious for having a pop off. Whats your HU?

Silver Member
Username: Extremesound1

Coventry, RI United states

Post Number: 145
Registered: Mar-06
whats ur head unit pioneer??? my friend does that to he has a powerbass and and hits at the end when he turns off the car too, and his amp is a jl 1000/1 i think it is the head unit.

like the beeping from the head unit of a pioner when u shut it off (mine does that), i think the bass does that maybe also

Silver Member
Username: Ucfsaxman

Oviedo/orlando, Fl

Post Number: 756
Registered: May-05
usually that happens when you still have a stock HU if you don't have a stock Hu then that is definately very odd and shouldn't be happening.

Silver Member
Username: Bradgman

GAlVeStoN, Tx Usa

Post Number: 167
Registered: Jan-06
Its a kenwood X890 with the usb attachment. Its one of the better kenwoods.

Gold Member
Username: B101

Queen City, NC USA

Post Number: 2700
Registered: Sep-05
lol, what kind of amp is it??
the problem is actually the amplifier 90% of the time...

example my prd1000.1 gave a loud boom, when turn the key straight off.. the boom is the extra voltage on the amplifiers voltage rails leaking out of the capacitors to the subs..

my 2 2500ds do not give me that boom!!

you can wire a relay to the remote wire, to fix this problem..
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