The Rack ReVibe is done, and here's a couple sound clips
Press the play buttons Mon
The library of Info has lots more info on building a ReVibehttp://www.el34world.com/schematics.htm
Here's the link to the rack revibe build pagehttp://www.el34world.com/projects/ReVibeRack1.htm
I love my ReVibe, but I really like the form factor of the rack pre-amps and amps that I built way better
To me ,it's just so much nicer to have all the gear stacked in a rack in a nice vertical line with all the knobs facing you and no crap on the floor
Anywho, here's my Revibe in a rack project
It's in a 3U x 7 inch deep rack chassis that I had laying around
The tubes stick out the back horizontally just like I did on my Stereo pre-amp projecthttp://www.el34world.com/projects/StereoPreAmp1.htm
I took apart a 3 spring reverb tank and only used the small middle section that holds the springs.
The metal section that floats inside the tank.
I jotted down some things during the build that apply to the rack build.
Forgot completely about the two 100ohms on the heaters but remembered as soon as I turned it on the first time (60 cycle Hmmmm, I know that sound)
After adding two 100 ohms to the heater chain, the 60 cycle hum was gone but I was left with a loud buzzing type hum.
The back panel that has the tubes and reverb springs was not making good contact with the rest of the chassis because of the anodized rack rails.
I added a 18 gauge ground wire from the back panel to the pot ground buss and the thing is dead quiet now.
I now remember that grounding issue with these rack chassis from many years ago when I built 30 watt heads and reverb units in these chassis.
It had me scrathing my head for a coupe minutes until I remembered, hooked up a quick test jumper wire and the hum stopped.
If I did another one of these, I would add a 3 lug terminal strip near the power trannny and terminate the tranny heater wires there.
From the terminal strip I would feed the tube heaters, wire up the LED and have your 2 x 100ohm resistors grounded right there
kill 3 birds with one terminal strip
I found a major error on the ReVibe layout diagram and I am surprised no one ever mentioned it.
There was no wire feeding B+ to point B on the board
Found another mistake on the layout, the speed pot was wired backwards
Turning it up made the vibrato slower
Scroll down to see all the images of this project
I will be doing a custom face panel for this as soon as I get time
The updated layout diagram