seriously help me with this. sub pop

[shellfish 10+ year member]

+Long story short my sub pops when the amp turns on and pops really loudly if:

-head unit volume past 25

-car door closes

-any random times, during driving

Then the amp goes to protect and wont turn back on unless i restart the car

+I have the following things done:

-1awg power wire

-1awg ground (two wires connected together via bolt)

-Head unit rca out ground to the head unit

-another 1awg ground to sub frame of the car

-yellow top under the hood sitting @ 14.40+ while music playing

+Potential problem areas:

-My HU power runs from batt to 10a mini blade to hu

-When i was trying a different set of RCAs the same ol' thing happened

but the RCA cables were really hot, i guess the amp was trying to ground via RCAs?

- Changed was the big 3 engine to frame ground,

its now engine mount to strut bolt if that helps

This is driving me crazy i've worked on this thing all day yesterday and the

install for the past week, and I'm just about ready to push my car of a cliff

Click to read more...

 

[Blue Fury 10+ year member]

Spend the day rewiring everything. What else are you going to do on a Saturday? If it still doesn't work, must be the amp

 

[shellfish 10+ year member]

well its my birthday and I'd rather spend it else where then under my car:crap:

i just don't see what is wrong...

 

[S.B.C. 10+ year member]

The pop noise could be a sign of inadequate grounding of the HU. That is part of the symptoms of a ground loop problem as would engine whine (ALT noise) coming through the speakers.

 

[shellfish 10+ year member]

ok 'ill go ground the hu to the car instead of the wire.

 

[shellfish 10+ year member]

Hu was regrounded, the hu body was ground to the frame. Still occurs

 

[shellfish 10+ year member]

Heeeeelp!!! plzz

 

[AVSTANG02]

You have soo many things to troubleshoot nobody wants to bother helping heh..

 

[jshak07 10+ year member]

Make sure nothing is crossing the RCAs?

 

[shellfish 10+ year member]

Well I'm trying to isolate the issue, If you guys could just make a list of things

for me to check over that would help a lot. What i do is i go through the possible

issues and then the things i already checked in the first post.

 

[tc3k101 5,000+ posts]

sounds like a weak ground somewhere

 

[MakeshiftAudio 10+ year member]

Sounds like a ground loop, or your headunit output is balanced rather than unbalanced. It MIGHT be grounding the outer terminal of the RCA out inside the amp, but usually there is a resistor to ground there of about 1k value, and it sometimes gets fried due to this.

 

[shellfish 10+ year member]

Seemed like a ground problem to me too.

But I have a 1awg from battery - to amp AND i have a good frame ground.

And it does seem like its an rca issue because like i said I tested it with a pair of

RF RCAs and when the sub burped and the amp shutdown the cables were

really hot, its just i already grounded the RCAs and the HU and i'm pretty much out of ideas.

How would i fix the RCA balancing?

Keep in mind that the sub/amp do work @ low levels and without being disturbed by anything (door shutting, car moving etc)

 

[shellfish 10+ year member]

Thanks guys, what was i thinking getting help from a forum anyway

Oh and i really do appreciate that some of you really did try and help me, thx

 

[MakeshiftAudio 10+ year member]

Without being there personally to try everything in one's head, it's pretty **** hard, especially when it could be a lot of things like mentioned above.

Good luck man.