The Amp Garage

Usually see the CF and previous stage in same tube, but for purposes of a mod I'm thinking of, would be easier if in different tubes. Any good reason NOT to do that?

The 220n cap on the Jose mod blocks dc from the CF so there is no DC on the master, which would make the master scratchy, and also put it in parallel with the 100k Rk (for purposes of DC). You have to also realize that the 220n cap is also in series with your tone caps, which DOES slightly change th...

Anyone done that? If so, opinion?

I much prefer low plate classic cleans, but I can see the argument for high plate on the OD stages.

What about a 1uf cap to block the dc from the cathode follower and a relay to switch the output between the stacks? Any foreseeable issues there? The 1uf should be more than large enough to be transparent. I see what you're saying about using 2 dpdt to switch the output of each cap, but that assume...

I'm not trying to tell you what to do - I may be misunderstanding, but, I'd use a 0.1µF cap to feed the A side COM of a DPDT relay... A side NO and NC would go to the two individual TSs. Jump NO of the A pole of the relay to the NC of the B pole, then jump from NC to NO. Connect the B side COM to G...

What about a 1uf cap to block the dc from the cathode follower and a relay to switch the output between the stacks? Any foreseeable issues there? The 1uf should be more than large enough to be transparent. I see what you're saying about using 2 dpdt to switch the output of each cap, but that assumes...

Running both stacks in a channel switching config. attached to one cathode follower, outputs switched after stack and master. Anyone done this? My questions would be: 1) resistors to isolate each stack? 2) better to do this, or put a 1uf dc blocking cap after the cathode and just switch stacks with ...

Thanks!

Anyone know the correct primary impedance on the kt66 jtm 45s? Thanks in advance.

Anyone have one? Thanks!

Anyone messed with various cap values to tighten up the low end on a ODS (Assuming you like some bass in your clean tone)? What cap value did you end up with? On my HRD mod I had to drop it all the way to 500pf to get it tight, but I think that might suck too much fatness out of the ODS.

In groove tubes parlance, "S"= JJ.

No Supro similar, and the builder is an arse about schematics. I had a customer who had a few I repaired for him, I recall having to trace the relevant parts of the circuit.

What are we talking about here? Adding an inductor across an Rk to try to get a specific frequency boost?

I feel like I missed part of the conversation. Is there a schematic?