Sonic T-amp, no sound on left channel on low volume - diyAudio
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Old 26th September 2007, 02:00 PM   #1
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Default Sonic T-amp, no sound on left channel on low volume

As the topic says, if I have the volume set to a low level (like listening when others are sleeping) theres no sound from the left channel.
If I turn the volume up to normal levels the left channel comes on. Has anyone else seen this problem?
I don't remember having this problem with my old one. I'm running it from a 12v sla battery and I tried different inputs and speakers but the problem persists. Any ideas?
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Old 26th September 2007, 02:14 PM   #2
BWRX is offline BWRX  United States
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Sounds like the volume potentiometer is bad.
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Old 26th September 2007, 04:00 PM   #3
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Yeah, I swapped the one from the old broken one and it was somewhat better but still not balanced. Guess I'll have to mod it with a better quality one.
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Old 26th September 2007, 04:27 PM   #4
BWRX is offline BWRX  United States
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If you just swapped the pot and it's still bad then that points to bad wiring. Those wires going from the board to the pot are real cheap and can break internally.
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Old 7th October 2007, 05:33 PM   #5
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I had the exact same problem (with the left channel being bad) but I had planned to replace the pot anyway - the problem went away after doing so. Measurements of the pot with my DMM showed a fairly substantial imbalance between the two channels, so go figure. You're not alone with this oddity though. If you don't plan to replace the pot you could always send it back and get a replacement unit.
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