Speakers farting when turning the car off

[don0xer]

Gday fellas, ive had this trouble for the past 6 months, it dosent really bother me but its kinda annoying lol. ive got a kenwood h/u, a 400w pioneer amp and 12" 400w pioneer sub, and a 800wmax amp. i know the amp/sub are **** but i was offered a cheap ass deal when i baught my h/u aswell. I got it all installed at JB, i was reccommended to get a 4gauge wireing set with it aswell(precautionary measure if i wanted to upgrade later), and its all neat and tidy except for 1 prob (one thing more to mention, all the speakers are stock, with the 2 factory 8" calais subs + tiny amp)

when i turn off the car, i get this rude fart lasting anywhere from 1-5 seconds coming from either the 8's or the 12" pioneer...

both power cables (batt>amp + amp control > h/u) are on the right, and the sub > h/u is on the other side of the car. The installed must of made a stuffup coz hes cut the amp control wire and retape'd it up halfway along the wire??? :/

would the farting be caused by a short or something? i get no static sound or interference when playing music, its just the farting when i turn the car off

[dlucre]

I have an intermittant similar issue with my VT too.
Kenwood Head Unit running:
- 2x 6" speakers in the front doors
- 2x 6x9" speakers on the rear shelf
Schneider 500w Amp running:
- 1x 12" Kenwood 800w Sub

I believe the "farting" noise I hear is coming from the sub.

My theory is the noise is probably a result of the capacitors in the amp run down after the power is switched off. My amp is directly connected of course, but once the headunit switches off and stops sending a signal, the amp goes in to standby.

My noise only happens for maybe 1 second (or less) so nowhere near your 5 seconds.

As for a resolution, I've got nothing. If you do find out what causes it for sure, and a resolution, let me know

[Tasmaniak]

IN all actuality the Amps should be turning off when the headunit goes off. It sounds like the amp powering the 8s are staying switched on.