Fired it up, it works! Please check my voltages.

[Fischerman]

Thanks Bob...I was concerned about too much shielded cable. Maybe I got carried away lol. At least it's quiet and doesn't oscillate (or at least doesn't seem to be). I was thinking of trying a bigger OD1 cap (I have .002 now) but I'm not sure what that's gonna buy me...it seems that the PAB is what is likely making it a bit too thin. My intention was for the 'standard operating mode' to be Clean with no PAB and then OD with the PAB auto-engage on. OD w/ PAB seems to be the best OD tone. I do have an idea for a new PAB but not sure if it will work...not gonna go crazy with mods yet.

Gil,
The one switch is my impedance selector, my OT only has 8ohm and 16ohm taps (which BTW I guessed and used a 100k NFB resistor on the 8ohm tap w/ BM PI/presence values...that sound close?). I don't know how/when/where I got it. It was made by Chily and the P/N is 7022. It is 10A @ 250vac; 15A @ 125vac.
The ON/OFF and SB switches are Carling 2FA53-73 and the Mouser P/N is 691-2FA53-73. They are 10A @ 250vac; 15A @ 125vac; 3/4HP.

Since you asked about switches...here are the P/N and Mouser numbers of these panel toggle switches made by Mountain switch. I don't know if these are good/bad quality but they seem nice and the bats are nice and short. I really like these
SPDT is 108-1MS1T2B3M1QE-EVX
DPDT is 108-1MD1T2B3M1QE-EVX
and you can get others from the catalogue page. I like a ON-OFF-ON Bright switch...I used 120pF and 220pF in this amp.


Matt

[dogears]

Matt,

I told you what to do with the OD1 cap. Going bigger is not the answer....

Thanks Bob...I was concerned about too much shielded cable. Maybe I got carried away lol. At least it's quiet and doesn't oscillate (or at least doesn't seem to be). I was thinking of trying a bigger OD1 cap (I have .002 now) but I'm not sure what that's gonna buy me...it seems that the PAB is what is likely making it a bit too thin. My intention was for the 'standard operating mode' to be Clean with no PAB and then OD with the PAB auto-engage on. OD w/ PAB seems to be the best OD tone. I do have an idea for a new PAB but not sure if it will work...not gonna go crazy with mods yet.

Gil,
The one switch is my impedance selector, my OT only has 8ohm and 16ohm taps (which BTW I guessed and used a 100k NFB resistor on the 8ohm tap w/ BM PI/presence values...that sound close?). I don't know how/when/where I got it. It was made by Chily and the P/N is 7022. It is 10A @ 250vac; 15A @ 125vac.
The ON/OFF and SB switches are Carling 2FA53-73 and the Mouser P/N is 691-2FA53-73. They are 10A @ 250vac; 15A @ 125vac; 3/4HP.

Since you asked about switches...here are the P/N and Mouser numbers of these panel toggle switches made by Mountain switch. I don't know if these are good/bad quality but they seem nice and the bats are nice and short. I really like these
SPDT is 108-1MS1T2B3M1QE-EVX
DPDT is 108-1MD1T2B3M1QE-EVX
and you can get others from the catalogue page. I like a ON-OFF-ON Bright switch...I used 120pF and 220pF in this amp.


Matt

[ayan]

Gil,
The one switch is my impedance selector, my OT only has 8ohm and 16ohm taps (which BTW I guessed and used a 100k NFB resistor on the 8ohm tap w/ BM PI/presence values...that sound close?). I don't know how/when/where I got it. It was made by Chily and the P/N is 7022. It is 10A @ 250vac; 15A @ 125vac.

Thanks. The reason I asked is that yours are not the typical, Fender style switches that most of us use in our amps. However, Dumble didn't use the Fender varitey in his latest amps either, so you peaked my curiosity.

Gil

[Fischerman]

The reason I asked is that yours are not the typical, Fender style switches that most of us use in our amps.

I just had the Chily and one of the Carlings and bought one more Carling. I used up any surplus parts I could for this.