im getting this weird humming sound from my passenger side tweeter..really noticeable when the volume is turned down. i know its not the rca cables cause it still exist when i disconnect them... i have switch the speaker to channel 1 and still have that noise.. i dont think ground because if it was why only the passenger side? any suggestions? is my tweeter fk up..better not be my amp thats fked?

 

is it an oem tweeter?
if no other tweeters are doing it, it could be a bad tweeter.
try switch the driver side tweet to pass side and see if it still does it.

 

have you checked the speaker wires?
what guage are you using?

 

can it be because my gain on the amp?

 

i doubt its the gain but try it any way.
im confused on why you would do that?
why dont you wire them direct to the amp?
i kknow its a pain in the *** do it (im fighting my civic to do it)but your going to get best results by going from amp straight to speaker with good quailty wires.
you have great speakers and a great amp powering them but your not getting true results because of your stock speaker wire is crap.
and it wouldnt hurt to get a lower guage speaker wire.

 

wow, so now your not getting any power?
my amps share a ground and work just fine, check the singal cable maybe it came loose,
no i dont think the distrubition block would have anything to do with that.
sharing ground is no big deal at all tons of people do it, and tons of people dont use the stock hu ground either,
take the speakers in to a stereo shop that can put them on a test bench to see if they are blown.

 

ok, well it doesnt hurt to try,
my guess is either the amp is junk better hope that thing still has warrenty or the speakers are garbage,

 

if its the amp man ill be super pissed....thats what i get for ebay...
i doubt its the speakers unless both are junk... too low of a chance u know...
would the ground for engine/alternator affect sound?

 

i understand totaly man those damn pdx amps arent cheap.
yea its a long shot but you never know,
no i dont think so but it wouldnt hurt to check them anyway,
what i would do is pull the amp and see if one of your buddys has a amp and just switch them in real quick and test.

 

..it was ground loop bought an isolator today and it worked... i have no idea where i went wrong lol..

 

good,
it happens to the best lol every once in a while something goes wrong.

 

goddammit this is driving me nuts...do anyone have any suggestions? ill list my setup to bounce off ideas..
my hu 12v constant is ran directly to the battery fused with 15amp inline...
my hu is grounded directly to the chassis somewhere above the shifter and my hu chassis is grounded at the same point as my hu...
the power source for my amps goes in from the passenger side hole but routed to the driver side to avoid crossing the rca ...
front components are ran half with stock wires half with new 16ga..
rear speakers are ran with new 16ga wires...
ive noise appears on all channels so if i take out the front 2 the rear still have noise...
noise seems to get worst when all 4 speakers are connected...

 

like i siad before pull your amp and test with another one,
i bet the amp is garbage, or your wires are the problem.
what type of deck do you have?
see if you can go in and shut the internal amp off for the deck.

 

i dont have another amp to test with..
is there a test i can do?
how do i check grounds with a multimeter for resistances and all that good stuff..??

 

ok, any friends have an amp?
is there any way for you to hook up the speakers back to your deck to see if its them?

i have no idea how to check grounds for resitance.

 

the ground check around 0.00-0.05 ish from the bat terminal to ground point so from what i understand its ok...
i doubt its the speakers since all 4 is doing the same thing..
ive read this
http://www.the12volt.com/installbay/...265~PN~0~TPN~2
but sounds kinda whack...
what do u guys think?
do your system stays quiet when at 0 volume? no hiss or anything

 

i dont buy it either, simply because of the fact your runing off of amp power not deck power.
at 0 volume mine is quiet and noithing is comeing out.
honestly i think its your amp. have you talked to any shops? maybe see if they can give a liitle more, by no means am i a professonal.
but i really think your wires should be upgraded becasue of the power your runing through them.

 

maybe it is the amp... o well its not like its noticeable on high volume its just annoying when u skip tacks or play at low volume..
ill know for sure once i can get my hands on another amp..
if it was the wires than the rear speakers would be good cause its ran with new wires..
nah i havent been to a audio shop in like ever... half of these ppl dont know **** the other half is there to sell u things o well whatever man..

 

yes that is true,

all stereo shops are money hungry and half of them are way over priced.
when i was installing my stereo i was looking for 12 gugae wire, knew where to go to get it, but i was getting the same answer, no we do not sell it in rolls but well install it if youd like.

this time do your self a favor and dont buy it from ebay.

 

A few questions...
MM&Y of car?
Makes and models of all equipment, [HU, speakers. amps, and sub(s)]
Is the noise there with engine running or not?
If only when engine is running, does noise get louder as you turn things in the car on, [head lights, high beams, rear window defog, blower fan and so on]?
Is there any "switching noise", with engine running or not and volume turned down do you hear anything from the speakers when you switch things on and off, [head lights, signal lights, rear window defog, step on brake and so on]?
Where and how are the RCAs and power run from front of car to amps?
Where and how and to what are the amps mounted?
Where and how are the amps grounded, how long are the ground leads?

Please answer all the above as best you can. 94

 

OK, the amps are in the trunk, " and how and to what are the amps mounted?"

Very nice HU by the way.

You have what is called system noise, the most common cause, [not your problem] is mixing brands of equipment, HUs, amps and processors, speakers do not matter.

The second most common cause is gain, too much gain someplace.
Something is turned up too high some place, what is the amp gain set at?

Is the system set up using the HU, x-over EQ and so on, if not, why not?
Do you have the manual for your HU, do you know how all the HU functions work, x-over/time correction/bass focus/MX mode/EQ and so on.
Is it possible the a gain/level in HU settings is cranked to the pin.

You should have 0 noise with that system, assuming everything is working properly, I would redo the setup, start with everything flat, [zeroed/centered].

The only thing I would change on your system is the RCAs and power for the amps, run proper length RCAs from HU to amps up the middle of the car, amp control lead can run with the RCAs, run the amps power down the pass. side of car, it is best to keep all leads as short as possible, I would also run a separate power lead for the 4ch amp and get rid of the distribution block, and use ANL fuses on the power leads.94

 

they are screw down to a 1/4 inch mdf wood shaped like the stock spare cover...

even if the gain is all the way to min there is still noise

theres a gain setting in the hu?

ive just notice this when messing around today...no rca pluged in... when there is 2 speakers connected when the vol is 20+ the noise activate when 4 speakers are connected the noise activate from the start...once the noise activate even if the vol is down to zero the noise will still be there.. samething happens when i swap to my bros head unit... do u think its the amp?

 

It could be the amp, it definitely is not the HU, which also eliminates any gain/level setting in the HU, you have already unplugged the RCAs from the amp and still had the noise I believe, eliminating them or how they are run as the problem.
That leaves the amp and the speaker wiring or speakers as the problem.
Amp mounting is not the problem, being mounted to MDF isolates the amps chassis from the cars chassis.

You said...
"ive just notice this when messing around today...no rca plugged in... when there is 2 speakers connected when the vol is 20+ the noise activate when 4 speakers are connected the noise activate from the start"

I am not sure I understand the above^^^
I am confused about the "no rca plugged in" and the volume adjustment when the noise appears, if no RCAs are plugged in adjusting the volume should have no effect.

I would test all the speaker leads for continuity to ground, [a minor short could cause this problem] and impedance load of each set, do this at the amp.
Disconnect all the speaker leads at the amp, test for continuity to ground on each one, [should be 0] then continuity between sets, should be 0] and then impedance of each set, [should be around 3.5 ohms - 4.5 ohms] let me know what you find. 94