setting bias mosfet amp

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Arroyo

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Joined 2005
Working with a Conrad Johnson SA120 and having to replace outputs on one
channel. Have a circuit prior the drivers that consists of a single transistor
that is positioned between the drivers ( bipolar driving a pair of mosfet drivers)
collector driving gate of one driver emitter gate on other driver. Question I have
is that there is a pot on the base collector of this circuit of this bipolar which
I am aware should be the bias set. Is there any standard practice for setting
this pot ? I assume one is trying to set the appropriate turn on range for the driver and output circuits ( 2sk405's, 2sj 115's).
Any help would be greatly appreciated

Thanks
 
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