Got this in over the weekend.... fun little pedal.
I was impressed with the build quality, and attention to details. All nuts secured with Loctite (the red stuff), so much so that I couldn't remove the nuts from the in/out jacks, and sheared the collar off of the mid switch, even after using some acetone to loosen them up. All pot leads from the board were braided, not just twisted - wire color coding consistent throughout the pedal and even denoted on the board. Overall the design of the pedal seemed to be well thought out. And all stuffed into a Hammond 1590S. Pedal runs on 18v only (no battery).
The controls - Vol, Gain, treb, mid and bass knobs. Phase, Mode and "mid" switches. The mid knob has a center detent. CCW from the center detent, the knob seems to act like a mid cut, and doesn't appear to be affected by the mid switch. CW from the detent, the mid switch alters the mid frequencies for pres, mid, and hi-mid settings.The pictures
- I included the part names in the topside photo, and they match up to the schematic and parts list.The schematic
- This is UNVERIFIED
and a work in progress. I'm not known for my schematic abilities, so hopefully it's readable - I expect corrections will have to be made. All IC's and transistors were sanded down, and colored over with a permanent marker. I was able to "massage" one of the IC's, and could make out "OPA26_4AP", so I'm assuming all 4 IC's are the Burr Brown OPA2604AP. All transistors/orientation in the schematic are incorrect at this point
, since I have no idea what they are - there's no way to identify them from looking at them, so I'm hoping some of the members here can help with identification by seeing where/how they are used in the schematic. Once we can determine likely values, I'll update the schematic. All resistors were verified with color bands and a DMM (although some DMM measurements didn't match up in-circuit). Schematic removed by moderator (it was an older version)
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