Power Supply/ New Build #183 clone

[butwhatif]

Where did you get the chassis?

[CHIP]

great work , what type of the resistor you use in PI stage , katode , OD input? (blue resistor) are KOA SPEER ? MF or CF ?

Thanks

those are NTE 1/2 w. metal film. The 2 brownish red caps are NTE.
Used according to 183 layout.

[CHIP]

Where did you get the chassis?

that's a CE chassis. Very nice chassis indeed.

[stelligan]

Dunno how I missed this one. Damn stellar looking build! Congrats.

[CHIP]

Thanks Stelligan, I always enjoy your clips.

[CHIP]

After playing the amp for awhile now I'm finding something strange with the rock/jazz switch. When I put the switch in the jazz position, it is actually just going into PAB. I get the same result with the switch in the "rock" position and the PAB engaged on the foot pedal.. I followed the #183 layout wiring.
I don't know if the layout is incorrect or what.
has any other #183 builders noticed this?

[ToneMerc]

After playing the amp for awhile now I'm finding something strange with the rock/jazz switch. When I put the switch in the jazz position, it is actually just going into PAB. I get the same result with the switch in the "rock" position and the PAB engaged on the foot pedal.. I followed the #183 layout wiring.
I don't know if the layout is incorrect or what.
has any other #183 builders noticed this?

What type of switch did you use? On-On, On-off-On or On-On-On?

[CHIP]

I used an On On. I thought that was what it was supposed to be.

[David Root]

It does look good! Thanx for sharing.

I have Jason's PS boards too, AND I have a pair of those exact Nichicon 330uF/400V/105 deg C caps. Do you find the PS is tight enough with ~165 uF (maybe 150) on the 4 power tubes? I say maybe 150 because mine check out at 300 uF each, not 330.

[CHIP]

It does look good! Thanx for sharing.

I have Jason's PS boards too, AND I have a pair of those exact Nichicon 330uF/400V/105 deg C caps. Do you find the PS is tight enough with ~165 uF (maybe 150) on the 4 power tubes? I say maybe 150 because mine check out at 300 uF each, not 330.

Yes David, I find the PS to be tight.
When you say "it does look good "do you mean the layout, or the ON ON switch?

[tubedogsmith]

Chip, on your PAB switch the side of the switch that connects to the bass pot needs to connect to the side of the r/j switch with the 100k resistor going to the treble pot. Sounds like you just need to switch the two wires going to the common on the r/j switch side to side. This is providing everything else is wired correctly on the switches.
I just went and looked at those layouts, wire it like the 102 RF layout.

[CHIP]

Thanks, I'll check it out.

[David Root]

Thanx Chip, I'll use the same plate caps you did. I'll be using a quad of Mesa STR-415 (Sylvania 7581A) at about 500V.

I was referring to your layout and workmanship, not the switch wiring.

[CHIP]

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[Structo]

Chip the only reason to use a three position on-off-on for the Rock/ Jazz switch is for the middle position for PAB.
This just simply allows a front panel switch to be able to turn on PAB.