The Amp Garage

Hello -- Perhaps you will find helpful insights via these two threads: GA50 aspirations Gibson GA50 Clone Noise Issue Pay close attention to the struggles and ultimate success in that second one. Some lessons certainly. Observations to share: In my view (and that of others who've played through my c...

Hello Mark --

No apologies please.

M Fowler wrote: ↑Fri May 03, 2024 6:42 pm Wish me luck and I apologize for all the confusion I created on messaging and all.

Wishing you more than simply luck. Get better and get back to the stuff you enjoy.

Best .. Ian

Congratulations sir. -My tremolo is satisfactory, however, there's not a huge difference between the speeds. I put my frequency counter on it, and on slow my range is 3.1-6.21Hz. Fast is 3.96-9.26Hz. Would it be worth it to increase R25 to slow down the slow range a bit more? Practically, how low ca...

Hello -- Suggestion was about overall placement, not so much the detailed layout. That era of Dynaco amps all had a PCB based construction. Would be straightforward tracing the grounding, though perhaps unhelpful in the end. They were successful using a "can" for primary HT DC power filtering. That ...

Hello -- Recommend looking into at the construction/layout designs of latter generations of the mid-size tube stereo amps of early 1960s. The Dynaco ST-35 would be an excellent place to start, and then scan the rest for additional ideas. Sharing a power supply is fine, and can be central toward the ...

Hello Dave -- Any magic in the 5E9's paraphase PI that I *must* have, or just go with the usual Long-tailed Pair? I plan to run 5881s and 6L6s in the amp. Retrofitting the PI drawn from 5E9 into a Mission kit-build 5E3 was, for me, revelatory. In the end, settled in with essentially stock 5e9 preamp...

martin manning wrote: ↑Thu Apr 25, 2024 12:51 pm

Reeltarded wrote: ↑Thu Apr 25, 2024 12:48 pm It's always something and always never ends.

This is one of the laws of thermodynamics.

IANAL in litigating physics realm, but is this law "zero"? Mildly bemused, as usual.

..

martin manning wrote: ↑Sun Apr 21, 2024 9:42 pm I'm a resistor heretic, though.

Beg to differ, asserting that skeptical schismatic would a closer positional descriptive.

..

Thanks Ian --

Makes sense with your explanation. I'd asked mostly out of pure curiosity. However, few possible additions/tweaks from the Dumble recipe book might increase utility and novelty but leave that to you for further thought.

Best ..

Hello Ian — Well, I bit. The transformer actually is off on all the holes by about a 1/4” so I’m probably gonna have to move it over to make it work, but when I started reading about it, it sounded like it would be more utilitarian for my kid. If it were mine I would just keep it as is.. Anyway. Tha...

Hello -- Can you clarify which supplier of kit they used. If it is "premium" (e.g., Trinity Tweed) and you can roughly confirm any problems are assembly errors with nothing damaged but some 6V6 vs junk parts, $800 is about the threshold of reasonable pricing. https://www.trinityamps.com/product/twee...

Hello again -- Hello -- Wondering what type of tube is presently installed in the PI position? Either V4 or V6 depending on reference schematic. Best .. Ian Ian! My dear old friend Ian McClagan would say "Us Ian's gotta stick together!" so passing that down the line in his honor. I have 2 old stock ...

Hello --

Wondering what type of tube is presently installed in the PI position? Either V4 or V6 depending on reference schematic.

Best .. Ian

No 'half-wave" -- Output of each PI triode is a full wave, just that they have inverted relationship; and it's the power stage that due to bias etc that divides the work into AB push-pull ..

helo -- Thank you clarifying my posting Martin. I do this only occasionally, and still perhaps more often than really necessary. Since a few usefully sized power supply dummy-loads are there in my toolbox, it takes just a moment to clip in and test voltages and more before moving on. If the schemati...