That smaller board is the tremolo circuit. You can see it on the Marshall schematic for the bluesbreaker jtm45 combo 1962. It looks like it is part of the intensity control.
I mean the round silver one on the left side of the bigger board. I was just wondering cause it looks like what you see in fuzzes. I just ordered my 2245THW.@@tcarad2
MrPickup12 hmm now I’m not sure which component you mean. Left side of the smaller board (tremolo board)has a silver transistor located between 2 yellow capacitors. Left side of the larger board (main board) has a diode (original vintage used a top hat diode here) below the resistor.
@@tcarad2 beautiful work. I asked because the mallory 150's look similar. Both are great guitar amp caps. Hey did you have problems with your revibe unit per creating a ground loop putting it in front of an amp?????
@@russellesimonetta3835 Ground loops can be pretty unpredictable, And certain equipment may not play well together. I specifically added a ground lift switch to my revibe unit from the start of its design. I was afraid I might have this problem. In practice though it’s hardly a difference between the ground lift off and on. At least that was the case for the equipment I have. But I recommend adding one if you end up building one. It’s probably worth having that as an option.
@@tcarad2 in my fevered imagining, I'm a neophyte, I wondered if a sheilded output jack that doesn't compleate ground to the revibe chassis but compleates the ground connection to the amp would do the trick.
@@russellesimonetta3835 if you send me a link to the jack your referring to, I can check it out. The origin of ground loop problems is that typical jacks are chassis mounted, and modern chassis designs all go to earth ground (not so in 1950s). Multiple paths to ground mean signal can passthru the shielded instrument cables if one chassis is at a slightly different potential. To make a ground lift work, you need to isolate your entire circuit from the chassis. That includes using isolation washers on jacks to keep from chassis ground. But more than just completely free floating, you just increase the potential a bit by tying to ground thru a very small resistor (most people use 10ohms). That’s enough to quash any significant signal across the instrument cable. If you do some search there are some good reads about it. It will eventually make sense.
