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Class D Switching Power Amplifiers and Power D/A conversion

Humm on Helder Ta2020
Humm on Helder Ta2020
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Old 2nd December 2011, 07:39 PM   #1
st33n is offline st33n  Netherlands
diyAudio Member
Join Date: Aug 2011
Default Humm on Helder Ta2020

I Have a Helder Ta2020, It keeps giving me a hummm. It is very annoying and unusable. I cannot find how to earth/ground it. Any tips on it?

Also I am running an airport express over 5v on the same power supply's 5v output. When I connect its minijack to the amp there is alot of nose. When I plugin in a headphone there is no noise at all.

Sorry for the beginners questions. I searched the forum, and the wiki appears to be gone.

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