When turning off car


Why is there like a bang only when turning off the car. Everything works fine and when you turn off the car then some kind of bang in speakers
karzuu
Could be any number of issues:
- Induced voltage between the head unit and external amplifiers if you have any on the likely RCA connection when it is turned off

- Poor head unit design that does not turn off in an orderly fashion
- Relay issue that is disconnecting the battery before the alternator causing a spike from load dump
and probably 5 things we have not thought of.

karzuu
Why is there like a bang only when turning off the car.

Most car stereo’s have cap coupled amps some even with relay outputs, this could only happen legit if your stereo or amps are direct coupled, then you can get a dc offset thump.

Cheers George