The Earthquaker Devices Plumes is their take on a Tube Screamer, and it’s quite a good one. It’s somewhat simpler than Palisades, which is probably about as far as anyone would want to take a Tube Screamer.
I’m not one that really likes Tube Screamers a great deal, as I never got the mid-boost and bass cut… I quite like this one though. Also, check out the Nobels ODR-S if you like Tube Screamers that don’t sound like Tube Screamers (if that makes sense).
EARTHQUAKER DEVICES PLUMES – VERO LAYOUT
This is my second layout for Plumes, the first was a little cramped, so I spaced things out a bit. Need a bit of room for the 1uf caps.
Now, if you did want to head towards something more like a Dunes / Palisades, you could quite easily make daughter boards for the voice and bandwidth controls. It’s just diodes and caps on rotary switches.
And a smaller layout, with all the connections for pots and switches on one side.
ON THE SCOPE / FFT
INPUT SIGNAL: 440hz sine wave, approx 130mv TRMS
volume varies to suit. note: B25K used for tone control, as I didn’t have a W20K
Clean boost – no diodes. There’s a lot of level on tap.
Full gain – no diodes. Again, just cranked and headed into square wave territory. note: even though it looks a bit square on the scope, it’s nowhere near fuzz – clean boost with some dirt at the end of the range is the sound. Meant to hit your amp with some level.
Silicon diodes – looking very much like a Tube Screamer now (tone 50%, gain 100%).
