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Help please: Noise from speaker while source is not playing music

swamytk

Active Member
Joined
Apr 18, 2019
Messages
251
Points
43
Location
Pune
Marantz PM5005 amp + Wharfedale Diamond 220 speaker + any source below.
1. Chromecast audio RCA out
2. Tantra Fluke BT Receiver RCA out
3. RPi + Fiio E10K DAC RCA out

In all of these above cases I hear "tr..tr..tr..tr..tr.." noise when volume level goes above 9 to 12 depending on source. when I don't play music I can hear that cracking sound clearly.

This is really annoying and this is my first serious problem with my first Stereo system build. Please help me to fix the same.
 
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raghupb

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Joined
Sep 11, 2015
Messages
1,652
Points
113
Location
Bengaluru
Follow process of elimination to isolate which of these is the culprit.
One source at a time, on the same RCA inputs of amp.
Cheers,
Raghu
 

swamytk

Active Member
Joined
Apr 18, 2019
Messages
251
Points
43
Location
Pune
Follow process of elimination to isolate which of these is the culprit.
One source at a time, on the same RCA inputs of amp.
Cheers,
Raghu
Thanks. All sources produce noise. I can confirm that noise comes from source. Some source begins at volume level 10 and some of them at 12. All sources use power from a multi port USB power supply. Let me check by replacing it with individual power.
 

raghupb

Well-Known Member
Joined
Sep 11, 2015
Messages
1,652
Points
113
Location
Bengaluru
Hmmm
Chromecast audio has its own wall-wart. Try that alone.
Don't know about the other two sources
Cheers,
Raghu
 

swamytk

Active Member
Joined
Apr 18, 2019
Messages
251
Points
43
Location
Pune
I just connected all sources with its own power supply than sharing common ground of a multi port power supply. It fixed the issue. Now all sources work without any noise. Feeling happy to fix this issue.
 
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