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Old 28th Jul 2018, 11:41 pm   #49
orbanp1
Heptode
 
Join Date: Nov 2009
Location: London, Ontario, Canada
Posts: 675
Default Re: Hacker Sovereign 11

Quote:
Originally Posted by mhennessy View Post
...

The gain is on the high side because the bass control network was left unconnected - it is a loss network. If you set R8 to 0k (bass at min) and join R9 to the collector of Q5, you should find the gain is nearer to 45dB.

It must have taken a while to arrive at the resistors that have replaced RV3. I admit that I lack patience with Spice
Indeed! The gain is in that case is 43.6dB!
Putting in pots and stepping through their values for the tone control is a lot more time consuming.
I concentrated on the DC voltages.

Finding RV3 value was not bad, only about three iteration.

Peter
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