This one has me scratching my head.
When I turn the car off when the volume is up a bit the subs make a loud boom or pop noise. I thought at first it may have been a poor earth to the amp, but after reading the forums I have it earthed to the same point everyone seems to suggests (using the same point as the battery is earthed)
If the volume is turned to minimum then it doesnt do it and if i turn the deck itself off it doesnt do it either, only when the ignition is turned off with the volume up.
The amp is an Alpine 1507, could this cause the problem? Front speakers which run off a kenwood amp dont do it which make me think its not the deck.
Any help any one?