electrocompaniet eci-4 help needed

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mea culpa

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Joined 2010
Hi ,
i just fixed my eci-4 with schorted output transistors.
All the work is done and i need some help adjusting it.
Everithing measures fine when starting up with variac.
I set DC offset to 0V in both channels .
then biassing is the problem.
It seems i can't get the bias current low enough.
Do i set bias at 13mV when the amp is cold?
All info on this amp is welcome
thans
 
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