Re: SB4000 Support Thread
« Reply #1520 on: February 14, 2020, 05:38:16 PM »
Calibration procedure will answer those questions.
P&P Sound Studio


JMan

Re: SB4000 Support Thread
« Reply #1521 on: February 15, 2020, 12:59:16 PM »
Calibration procedure will answer questions about PRE-trim values... :o  ???  Well I have indeed read through the calibration steps and there’s absolutely no mention of PRE-trim values, because... I mean, by the time you’re doing calibration, you’re no longer at the “pre” stage, ya know?  ;D

Okay then, I’ll take this to mean that the pre-trim values I have taken from the schematic are the only ones I need to worry about (plus the ones in the power supply section that must be set to 1k33), and the others are only adjusted after they are in place on the board during calibration.

I’m still a little confused on why VR16 is a 50k pot that the schematic says to pre-trim to only 6k.  Seems a bit weird to me, but what do I know...

Re: SB4000 Support Thread
« Reply #1522 on: February 15, 2020, 04:15:34 PM »
"Okay then, I’ll take this to mean that the pre-trim values I have taken from the schematic are the only ones I need to worry about "
Give that man a cigar.
P&P Sound Studio


 

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