Amp Porn

[talbany]

I had to do some upgrades on 3 of my amps so I had them all out of the cabs at the same time so I thought I would take a quick shot and share it..Sorry about the quality all I have is my phone
Left to right....Low plate classic/Low plate Skyliner Music Man/High plate Skyliner (separate bias pots)
Tony

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[telentubes]

sweeet! immaculate construction.

[Colossal]

Beautiful amps, Tony! Thanks for sharing them, and all the Dumbley information you contribute

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[talbany]

Here are a few more of the Low Plate Classic..Really beginning to warm up to this amp

Tony

[ijedouglas]

Very nice! Are those 1 watt Q-Lines on the OD out?

[talbany]

Very nice! Are those 1 watt Q-Lines on the OD out?

Yes although I believe Draloric listed them as 0.7 Watts under the 0617 Type..I am not sure if Sprague listed them as 1 watt on the package? The 100k's are 5% Tolerance and both have the yellow band IMO same resistor.. W.German

Tony

[ijedouglas]

Very nice! Are those 1 watt Q-Lines on the OD out?

Yes although I believe Draloric listed them as 0.7 Watts under the 0617 Type..I am not sure if Sprague listed them as 1 watt on the package? The 100k's are 5% Tolerance and both have the yellow band W.German

Tony

I have the same ones. Sprague listed them as 1 watt on the package. How do they sound compared to the 1/2 watt?

[talbany]

Very nice! Are those 1 watt Q-Lines on the OD out?

Yes although I believe Draloric listed them as 0.7 Watts under the 0617 Type..I am not sure if Sprague listed them as 1 watt on the package? The 100k's are 5% Tolerance and both have the yellow band W.German

Tony

I have the same ones. Sprague listed them as 1 watt on the package. How do they sound compared to the 1/2 watt?

Hard to say right now? being as I only have 1 half watt in the amp and it's in the PI and I literally just installed it today the jury is still out but so far it sounds like a Q-line (thumpy)

Thanks!
Tony

[dbharris]

Very nice Tony, thanks for sharing!

-Dan

[Smitty]

Thanks for sharing, Tony. Lots of very cool parts. Here's a 124ish with a board on the side that I can change the tone stack values by paralleling caps. The little tines are soldered together to make the connection. I put a slope control in the FET hole.

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[Smitty]

carbon comps in low current positions

[Smitty]

27k/2k2/.39uf feedback with a 10K pot. Mullard tropical fish.

[Smitty]

390pf 630v BC film treble cap

Drive control on OD1 and trimpot on OD 2. I know the ratio I want between OD1 & 2, but adjust the input to OD1 based upon the gain of CL2. More better.

[Smitty]

121k from B+5 to ground to simulate current drawn from FET. Sprague 516D cathode bypass.

[Smitty]

I changed the lower end of the feedback resistor to 2k2 so I could use a 10K pot and .39uf topical fish