Is Grounding rca's at DSP ground ok?

[Toneb210]

So I've had a weird issue with noise for a while now. Over time made several upgrades that have not solved the issue. All grounds are good and the slight noise I'm getting seems to be from tweeters, and it's not always present. More when there is just a vocal on its own with no music. Just certain parts of certain songs I hear it. When the music comes in with the vocals, the noise goes awa, or at least it's getting drowned out. Im using knu konceptz krystal rca. I have the main rca from hu to DSP, and 3 short ones from DSP to amps. All the same type of rca. I have tried Grounding rca's to hu. Made no difference. Was wondering if I should try grounding rca anywhere else like maybe at my DSP input using its ground. Open to suggestions before I drop $50 and swap out rca and try nvx brand.

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[keep_hope_alive Premium Member]

likely not an RCA problem.

likely the noise is being drowned out.

get a 0 bit track (pure silence) to play and see if the noise is present at all times in the background and if it varies with amp gain and/or HU volume.

 

[Papermaker85 5,000+ posts]

the RCAs should be isolate from the other grounds. grounding them will lower the introduced noise but thats a bandaid..

 

[Toneb210]

likely not an RCA problem.
likely the noise is being drowned out.

get a 0 bit track (pure silence) to play and see if the noise is present at all times in the background and if it varies with amp gain and/or HU volume.

Where would I find that type of track? Also I get a quick little thump from subs when the amps turn on. You think it's related ?

 

[Louisiana_CRX 5,000+ posts]

try doing the big 3 that will help

 

[keep_hope_alive Premium Member]

Where would I find that type of track? Also I get a quick little thump from subs when the amps turn on. You think it's related ?

Possible they are related. Amps can have noise issues due to their design.

Rich V.

 

[Toneb210]

try doing the big 3 that will help

Already did big 3. Actually did big 4.

 

[Toneb210]

There's a way to test my ground with a multi meter right? Can someone tell me the process and what's the reading I should get.