The Amp Garage

Hi, I am the original poster, and I wanted to say thanks to all the contributors. The Grounding chapter a couple of posts up is a great find! Lots of excellent information there. My kit has made it to Australia, so it should only be a week or so until I have it in my hot little hands. I like the ide...

It's not just the ripple voltage; decoupling of the stages is also important. The last filter is powering no less than six triodes, where two or at most three is usually considered the best practice. It's not quite as bad as it seems, though. Typically only one channel is in use at a time, so the w...

Roe wrote: ↑Tue Jun 07, 2022 1:25 pm you need a filter cap and ground for each of the 6 preamp tubes (pluss screens and mains)

Why? Surely the filtered B+ (point D in links to schematic posted above) voltage has already benefitted from a choke and 2 dropping resistors prior to it. The ripple if any would be tiny?

I've added a marked-up layout to the first post in the DR Replica thread. Thank you very much! I will pore over it and hopefully my aged and rusty neurons will wake up, and it all makes sense. Did you notice and improvement over the original AB763 wired as per the schematic? I can't help but think ...

Here is is how I modified the AB763 grounding for a Deluxe Reverb: https://ampgarage.com/forum/viewtopic.php?p=428877#p428877 No brass plate, no ground bus. I have pored over this thread and the accompanying picture for quite some time, and I am still unclear. Which is why I asked if there is a ste...

Hi all, I will soon be launching into a Mojotone DR kit, and looking for a definitive guide in improving the stock grounding scheme. OR, talk me out of it, and tell me why the original is just fine! I have read a LOT of posts about brass plates, copper buss bars etc, but the is no step by step or we...