The Amp Garage

I decided to rebuild the board instead of trying to make it work around it. I realized it was a bit convoluted, so I took a bunch of stuff back out and focused on getting a solid layout. I overly annotated to use as a checklist for my build. I've run through the layout a couple of times now and am n...

Colossal wrote: ↑Mon Feb 28, 2022 5:50 pm Imo,

Note that your values for R4 and R9 are reversed on both your schematic and layout. Refer to #102...unless your values are intentional, of course...

Thanks Colossal. I've moved towards a low plate classic circuit. The first two cathodes are 1.5k. I think that's what you are referring to

The journey is the thing..Right? So, this is my backup rig. I decided to experiment with a Dumble type situation, and as I got further into it, read and learned a bit, I shifted into a complete rebuild. I know it's a bit of mid-stream shift, but I am learning a lot about the circuit, and will be abl...

@rootz I'm curious as to which design you actually built. Did you use the later schematic(comparison between 124, JM, and crs V3) or the early one that you listed for general design? I thought you followed the general pre of the low plate..100K plates, etc, but the schematic you referenced has the h...

that is quite helpful. My current reverb is pretty similar to a Super reverb. I'm understanding the nature of the OD a little better now in terms of clean vs overdrive. The non overdrive is actually like the non vibrato channel in an old fender. i don't know why I hadn't noticed the lack of another ...

Thanks Dan! I haven't decided. Trying to get some perspective on what would work best for my playing. I'll check that out!

I am starting to do some of the metal work, and moving some components around to make room for the bigger transformers and additional tubes. I'm curious as to where to tap off for the reverb. Should I tap after the V1B tube? I haven't found any OD style amps with reverb to compare to(at least schema...

Tony, Thanks again for your replies! Definitely gonna start with the classic stack. I'm gonna go ahead and add the jazz/rock switch. Ive got a new PT and OT coming for this. They are both Twin drop-ins, so I should be good on power. I noticed that most folks are using seperate 6V transformer for rel...

And, if I skip the rock/jazz switch I can also ditch the 22M resistors

It seems that i could add the tone stack with extra switching and change the NFB with the existing layout I have.
If I were to add the OD that would add another pre-amp tube, doable, but need to look at where in the existing circuit to put it.

Thanks Tony! I'll do some reading.
BTW, really appreciated the posts of yours I've been reading. They have been helpful in getting a grip on what's up.
I've built a bunch of amps, but venturing into this world and trying to understand where it intersects with my playing is a major shift.

Hey Roots! I'm really digging on your take on this design. This is what I'm leaning towards as well. Wanted to see your thoughts on the amp now that you have had it for a while. Did you end up sticking with the initial schematic that you listed or did you change anything? I didn't see the files in t...

Hey everybody, I've been doing a ton of reading and learning! i got all excited about possibly picking up a Two Rock classic reverb, until I learned how backed up they are! I started looking at building some type of similar Dumble style build in that vein, and was tossing a bunch of different design...