sundown amp high pitch noise

[Johnny Law.Lulz 5,000+ posts]

just bald wire correct?

yes.

 

[schackel 10+ year member]

Pioneer RCA preout noise prevention - DIYMA.com

what is this all about? i dont understand this at all

 

[robertoyoung08 10+ year member]

This is not a Sundown problem. I am willing to bet that this is a LOC or Headunit problem. Are you plugging the RCA's into the right section on the amp? There is no way that it is the sub amp pushing high pitched noises through the door speakers unless you have seriously fu-bared the install some how.
1) Are you using RCA splitters for each amp or 2 seperate RCA's ?

2) Are both of your amps grounded to the same location ?

i ****ing hope its fixable. two amps in a row seems too much.

yes im using 2 separate rca cables for each amp. ive tried runnign rcas outside the car to the sundown and same ****.

no, both amps are not grounded to the same spot.

someone else on here said sundowns need extremely good ground, so i hope thats the case, so that could be easily fixable.. knowing my luck though, that wont fix the problem.

im just worried, cus like i mentioned, the other amps ive tried with the exact same connections, worked fine.

 

[robertoyoung08 10+ year member]

Nothing I can think of. I'd just be really shocked if the issue is from your amp, especially two in a row. I've used Sundown amps and know several people locally who do/have as well, along with tons of people on these forums that do. I've never heard of a noise issue before though.

yeah your right, ive never heard of any such issue with sundown, and many people onhere seem to run sundowns.

 

[Slo_Ride 5,000+ posts]

sounds like a sundown problem

No, its sounds like user error. I've never had a problem with sundown amps.

 

[robertoyoung08 10+ year member]

No, its sounds like user error. I've never had a problem with sundown amps.

well wth is the problem

i got power

i got ground

my headunit works fine with out the sundown

and my full range and my headunit work fine together.

my hu, my full range and any other mono amp work fine all togehter.

so why not this sundown, is still my question.

i will go home in a bit and try regrounding. other than that, i dont see what else it could be.

 

[RJesus 10+ year member]

The sundown amp has 2 sets of RCA holes. 1 is for input, the other is for output.

You're plugging your RCA's into the output sockets.

Try plugging them into the other set labeled input.

I accidentally did it once before

 

[robertoyoung08 10+ year member]

The sundown amp has 2 sets of RCA holes. 1 is for input, the other is for output.
You're plugging your RCA's into the output sockets.

Try plugging them into the other set labeled input.

I accidentally did it once before

lol no i already tried both.

either way, i get the same high pitch. im home and about to try and reground. im crossing my fingers that this is it

 

[robertoyoung08 10+ year member]

just triend grounding my rcas at headunit and pitch was louder i think.

either way didnt work

 

[RJesus 10+ year member]

does it have the high pitch when the gains are up and when the gains are down?

is it present when playing music?

Is it there when nothing is playing?

Is it there when your playing the radio or ipod or cd or all of them?

when you had your other amp connected, how high was the volume on the headunit and what voltage were the gains set to?

 

[robertoyoung08 10+ year member]

does it have the high pitch when the gains are up and when the gains are down?
is it present when playing music?

Is it there when nothing is playing?

Is it there when your playing the radio or ipod or cd or all of them?

when you had your other amp connected, how high was the volume on the headunit and what voltage were the gains set to?

its present when nothing is playing, when volume is on off, when car is on or off, at any volume with any source. cd, ipod, radio. etc.; with gains at very minimum or at max high pitch is present at a consistent volume

when i had the other amp connected there was n noise at any volume, with car on or off, with any source, radio, ipod, cd.

gains were set mediumish.. point is, with my other amp there was no high pitch, no matter what the settings or vlumes, not high pitch at all.

so in conclusion:

sundown= high pitch

any other amp= NO high pitch

 

[robertoyoung08 10+ year member]

regrounded and made ground cleaner, more bare metal. and noise reduced by a tiny bit, but still present.

 

[Johnny Law.Lulz 5,000+ posts]

Have you just tried to hook an ipod up into the inputs on the amp without the radio ?

Like i said, i am 100% sure its a LOC/Headunit problem. There is no way for the Sundown to be presenting through something thats not even hooked up to it.

 

[basebalz13 10+ year member]

I use sundown amps in my SQ setup, Dont think its "The Sundown Problem"

 

[RJesus 10+ year member]

So the new ground did reduce it?

what are the specs on your other amp?

It is possible that because your other amp draws such a small amount of current, various improper grounds didn't do much damage.

Are the RCAs / rca inputs clean? Any stray wires sticking out anywhere?

Try taking the speaker leads out. The noise is coming from a speaker or the amp itself?

If its coming from a speaker, maybe there is a short somewhere. Check each speaker wire by putting it into the amp by itself, or by taking one out at a time. either way works.

MAKE SURE YOU DON'T TRY TO REMOVE WIRES FROM THE AMP WHILE THE AMP IS TURNED ON. SHUT THE CAR OFF COMPLETELY FIRST.

Or else you will short the amp.