Turn-on noise.
#1
Turn-on noise.
Hi everyone!
So I have been dealing with this issue for a bit now and cannot figure out what the issue is.
I have had the car looked at multiple times by others and the problem cannot be solved.
So here it is!
Upon turn on I recieve a squeak / pop / thump through all of my speakers. The strength of which varies randomly. It can range from a tiny squeak to a rare thump sending an amp into protect.
The gear that I am using is,
Head Unit - Pioneer DEX-P99RS
Amps - Zed Leviathan, Zed Kronos
Testing done so far has ruled out certain things.
RCA's disconnected - still happens
Rear Battery disconnected - still happens
REM jumped straight off of battery - disappears
So it was thought that because the headunit was connected to front battery while amps directly to rear battery there was some kind of fluctuation. A relay was added allowing the amps to be activated by front battery - Still happens.
I have also tried a variable turn on delay to no avail.
I have gone through and tightened all of my grounds and still nothing.
Also the Zed's are post faulty chip era.
Does any one have ANY ideas at all?
So I have been dealing with this issue for a bit now and cannot figure out what the issue is.
I have had the car looked at multiple times by others and the problem cannot be solved.
So here it is!
Upon turn on I recieve a squeak / pop / thump through all of my speakers. The strength of which varies randomly. It can range from a tiny squeak to a rare thump sending an amp into protect.
The gear that I am using is,
Head Unit - Pioneer DEX-P99RS
Amps - Zed Leviathan, Zed Kronos
Testing done so far has ruled out certain things.
RCA's disconnected - still happens
Rear Battery disconnected - still happens
REM jumped straight off of battery - disappears
So it was thought that because the headunit was connected to front battery while amps directly to rear battery there was some kind of fluctuation. A relay was added allowing the amps to be activated by front battery - Still happens.
I have also tried a variable turn on delay to no avail.
I have gone through and tightened all of my grounds and still nothing.
Also the Zed's are post faulty chip era.
Does any one have ANY ideas at all?
#3
no difference if the amp / headunit turn on first.
playing with the headunit grounds did make a difference though
its factory harness right now.
taking the ground away and relying strictly on the antennae resulted in a much more pronounced squeak/pop.
grounding to the chassis didn't make any difference than using the factory harness though.
playing with the headunit grounds did make a difference though
its factory harness right now.
taking the ground away and relying strictly on the antennae resulted in a much more pronounced squeak/pop.
grounding to the chassis didn't make any difference than using the factory harness though.
#5
I've read about blown muting transistors in some cases - whatever they are
I also have turn off pop (long story short, I had a dead short from amp speaker outputs
to ground - resulting in a blown output transistor, which is still un-repaired, so for my
front outputs I am using speaker level inputs to a LOC.... anyway ever since "tractor
pulling" my front inputs I now have turn off noise, even if I unpower the amplifier before
the head unit.
I also have turn off pop (long story short, I had a dead short from amp speaker outputs
to ground - resulting in a blown output transistor, which is still un-repaired, so for my
front outputs I am using speaker level inputs to a LOC.... anyway ever since "tractor
pulling" my front inputs I now have turn off noise, even if I unpower the amplifier before
the head unit.
#8
Not sure if this would help you, but, have you checked the all the grounds impedences with a DMM?
When we had a similar problem, it was cured when we changed our grounds to a new place with the same low impedance as the front battery ground.
We had 3 ground points before, all different imp., after, we had 2 with the exact same impedance and no noise
When we had a similar problem, it was cured when we changed our grounds to a new place with the same low impedance as the front battery ground.
We had 3 ground points before, all different imp., after, we had 2 with the exact same impedance and no noise