Hi!

This is my first post on this forum but my experience with tripath amps started actually in July 2008 with building an amp4. No problems so far (very fine amp for low power!). Now Ive built 2 trupath amps for biamping my Jordan jx92s/sub combination. The amps actually worked perfect from first startup on!! The first measurements were as follows:
-VPP/VNN +/-50V on both
-IPP/INN ~ 90mA on amp1 and ~70mA on amp2
-IN10 ~ 200mA on both
After about 8 hours of exiting listening I realized that the 3020 got kind of hot (~ 55C) and the heatsinks where a bit warm (~45C) but toroids were cold. So I but them back to my bench and measured the following:
-VPP/VNN +/-50V on both
-IPP ~ 100mA on amp1 ~80ma on amp2
-INN ~ 300mA on amp1 and ~280mA on amp2!!!!!!
-IN10 ~ 180mA on both
Double checked all soldering and component placement, everything seems ok.

Any idea where to look first? Did you check your IPP/INN after an extended usage of your amp? Any changes?
Your help is much appreciated!!!!

Cheers
Ivo