filter for sure t-amp in car?

[majorahole]

would this work for my noise issues?
35A Heavy Duty Noise Filter
thanks
im using the 4 channel one

[Cr@sh]

Well before purchasing anything, I would double check the install. I'm not knocking your ability but the best of the best make mistakes. Engine noise (I'm assuming thats what your deal is) can be from many things. Cheap rca's, cheap rca's near power wire, broken solder points where the rca's connect to the radio or amp. Bad grounding, too many things grounded in different spots. The list goes on.

[majorahole]

no offense taken at all.
ive checked without RCA's, and with a direct to battery ground, and its still there.
i was told to make a filter with as big of capacitor as i can get and an inductor, but i really have to clue exactly how. ive googled it and find much more complicated diagrams than just the inductor and cap.

[enzoR]

did you try grounding the inputs of the rca's? Is the amp boxed up in a grounded metal case?

I have doubts that the noise is coming though the PS.

[majorahole]

i tried to ground rca's at the amp, it is oem head unit with line out converters, i extended the speaker wires to under the seat where the amp is, then soldered the loc so i didnt need
rca's.(loc had male rca output,they're from PE)
right now the amp isn't in a case, its just sitting on my carpet under the seat, untill my brother finishes cutting my lexan pieces for the case, it will be all lexan, could that be a problem??

what others have said is that it doesnt have the normal car amp filtering, and thats why im getting noise.
its in an 07 VW GTI, incase it matters.

[Cr@sh]

Originally Posted by majorahole

no offense taken at all.
ive checked without RCA's, and with a direct to battery ground, and its still there.
i was told to make a filter with as big of capacitor as i can get and an inductor, but i really have to clue exactly how. ive googled it and find much more complicated diagrams than just the inductor and cap.

Yea, I read that thread. Your head-unit most likely has those, but the bottom line is there has to be another problem somewhere. where are you grounding the amps to? again keep in mind that inside the amp where rca jacks are soldered to the circuit board it may be broken and that can cause all kinds of noise issue, especially if its the ground shielding.

[Cr@sh]

Also another way to check if you can is to run a set of rca's from a bench radio or even your home stereo to your amp and start the car up. If the noise is still there it's most likely the amp.

[Cr@sh]

Originally Posted by majorahole

i tried to ground rca's at the amp, it is oem head unit with line out converters, i extended the speaker wires to under the seat where the amp is, then soldered the loc so i didnt need
rca's.(loc had male rca output,they're from PE)
right now the amp isn't in a case, its just sitting on my carpet under the seat, untill my brother finishes cutting my lexan pieces for the case, it will be all lexan, could that be a problem??

what others have said is that it doesnt have the normal car amp filtering, and thats why im getting noise.
its in an 07 VW GTI, incase it matters.

I forgot your running the stock stereo and line out converters. Well those things can be trouble some as well. Your case wont be a problem unless there will not be enough cooling/air flow for the heat sink. Do the line out converters have gains on them?

[majorahole]

i was thinking about later on adding a fan to the top, with vents on all sides of the case.
the converters are passive.
ive tested the amp out of the car with a 12v and 27v psu, and there are no noise issues at all.
i can try using my phone as the source and see if that helps

[majorahole]

and its grounded to a factory ground point, about 2 ft away