The Amp Garage

Ok, good - thanks Martin! The front is my preference also - mainly because I didn’t grind the finish off under the terminal strip at V1, and the terminal strip screw eyes just don’t look as beefy as a real grounding lug (I used mini strips because I already had them). I have plenty of room by the ja...

Today’s trivial question: Been meaning to ask about the shielded cable from the input jack to V1. In this amp, I see that HAD grounded it at the terminal strip. Is there any technical reason he chose that location vs. the lugs up by the jack? Does it make any difference - ground is ground, right (ex...

Understood, thanks Martin. That’s what I was thinking - but wanted to be certain just in case.

Got a Mouser box Friday evening and kind of just went bananas since then. That Triad 12v transformer dropped right in, got my small boards buttoned up and installed and got the tube sockets “decorated”. And I still managed to get about 4 hours of yard work done yesterday as well, so my better half c...

Glenn, That chopstick trick is actually what I’ve been using as a trimmer adjuster. I have a long one and a short one. They work great, and I can say I made them myself. I make sure anything I stick in the chassis when it’s running is non-conductive. Learned that one at about age 5 when I plugged a ...

Hey, that’s helpful Martin! Been searching on and off today and had a few “maybes” - but this saves me some energy, lol.

How does the 25 turn thing work? Just better fine tuning due to the multiple turns?

Thanks and very much appreciated!

Understood. I’ve got a conversion “map” for the Hoffman boards that makes using your plans easy. Just thinking through the differences to try and anticipate any traffic jams. Just to be sure; I’m using the “Separate Masters HRM, Bluesmaster” connections, correct? Every time I look at the layout then...

I’ll do that Martin👍 Question about the layout: it looks to me like the relay system is not wired the same way your boards are; but it seems like the mdroberts schematic is closer to yours (from what I can tell - can’t figure out the relay board Com points on the schem). Am I correct or am I misinte...

Thanks Martin! I’m pretty happy with how the PS worked out and it wasn’t difficult to do at all. Your plans were easy to follow and everything fit perfectly. It’s pretty amazing how there’s so much more selection for way less cost in radial and snap in components; and I agree that it still has the D...

Good luck! I hope it’s quick and painless!

Awesome, thanks! I’ll start looking for one now

Thanks again Martin!

Yes, I was looking at your boards - which are my guidelines for sure.

Any recommendation on that pot value? After thinking about it - maybe 1M is too much? All the modded relays seem to be under 100k; but maybe there’s more to discover past 100k?

I hear ya Matt, me too, lol.

Glad you’re doing better and back to this great looking build!

Thanks Martin!
This might be an obvious question, but I don’t understand why it wouldn’t be on Com2 to NC2 since NC2 goes to ground - thereby adjusting how much of the mid pot goes to ground? At least that’s how it looks to my untrained eye.

I must be missing something, right?

Martin,
Does that have something to do with the third leg of the pot and where it would be connected? I was kind of wondering about how that would work.

So put the trimmer connecting Com1 and NC1 - one side and wiper with the other side?