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|18th January 2013, 08:22 AM||#1|
Join Date: Jan 2013
TDA2616, PGA2311 soundbar noise problem
Here's my little issue. I'm building an active soundbar for my television. I have build the amplifier/controller/subfilter PCB and assembled it but I'm experiencing some problems listed below.
- Loud audible hissing from the speakers. (not 50/60Hz noise, more like a snake )
- The pin changes from the TINY IR (remote receiver) do not trigger the interrupts in the attiny2313 for volume up/down/mute on the PGA2311
Have been on my school today measuring the audio trough the system. The amplification seems to be okay, and no DC is added to the signal. I´m really getting frustrated because i can't seem to pinpoint the problem.
Hope some good soul will take a look at my schematic and PCB layout and hopefully say... Ahhh that is obvious...
Best regards and thanks
P.S. please excuse my english... hope it makes sense.
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