Omnidrive

Here’s a project that I built up some years ago. This never found it’s way into a box. I dug it out and decided to try and box it up. Difficult with the number of switches and knobs. I think I have a viable plan to shoehorn it into a BB sized. box.

This is a pretty interesting distortion box. It’s sort of a Tube Screamer, Rat, Distortion +, with an Octave up. When I finish it up it should be all of those things in one box.

This was built using the layout generously provided by R.G. Keen of GEOFEX fame.

Omnidrive


Screamer

Built Jack Orman’s Son of Screamer last night. Fired up the first time and sounds pretty good. I have not owned a Tube Screamer before. After building this I’m understanding the complaints about the “mid hump” in the sound. The sound is very focused in the mid range.

There seem to be many mods for this floating about. So I thought I’d build a second one to compare to the first. I picked out the LovePedal Eternity. There is a good thread about this one here.

From the schematic it looks like the Son of Screamer with a few changes in parts values. From what I can see it seems the Eternity just increases the lows as described in this article Muzique.com.

Of course the next step is make the RunOffGroove Tube Reamer for a final comparison. Looks like the Tube Reamer adds event more.

It looks C2 is increased from .047 to .1, from SOS to Eternity, and doubled again to .22 in the Tube Reamer.