Scratch building a version of a Ceriatone Plexi 51 All Access

OH DEAR LORD THE SOLDERING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I need to solder a new output jack into my Strat.............. I started to earlier today -- and well.......
its back on the hook and the Godin is being played............ Ill get around to the jack repair, uhm..... later
 
OH DEAR LORD THE SOLDERING!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I need to solder a new output jack into my Strat.............. I started to earlier today -- and well.......
its back on the hook and the Godin is being played............ Ill get around to the jack repair, uhm..... later
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It turns out that during the Hurricane is a good time to drill holes in the chassis (lots of holes), no heat in the garage during that time, nice and cool. Chassis is all punched including all those damn mini switches, front and rear. Mounted the iron and sockets, ready to start the turretboard next.


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Tube Rectifier or S.S. switchable
I have done this on a few amps. To do it , I use a (properly rated) 3 pole "on off on" type switch as the standby switch. Two poles are needed to switch the high AC voltage between the GZ34 or SS rectifier, the 3rd pole of the switch is needed to switch in a suitable value AC (bias supply) dropping resistor when in tube rectified mode to maintain correct bias in both SS & tube rectified modes. Give me a yell if you need info on how to do this properly. Cheers
 
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I was looking at the two voltage dropping resistors between the choke and the PI. Is 9.8k a special value? Or, why not use a single 10k?

I am following along with the All Access Plexi51 design, in an effort to try to get similar tones , and hopefully a few more added tones, than the Plexi51 theme. So I copied for a large part, the general Plexi51 layout, which included the dual dropping resistors, as per the Plexi51.

I think that the current flow in each resistor should be @ half of what the total current flow is in a single 10K, in that position. After the JTM45 with a single dropping resistor in that position, Marshall used the two series summed in the Superleads. I won't speculate for the exact reason for series summing, as I'm not 100% positive as to why.
 
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