Not quite sure what the power output is as I haven't bothered putting to much into working that out, but going from the voltages and configuration I believe the 6BQ5 channels are around 15 watts and the 7591 around 30-40 watts. In the end we have a very nice sounding little amp. I also pulled all the puts but those required for stereo operation. I've only made minor modifications, connecting an input after the high pass input filters on each of the 6BQ5 channels and snipping two wires which connected the two channels input through 470k resistors to separate them. Separate 5AR4 rectifiers for each of the two power amp sections. There's a stereo 6BQ amp which each powered an 8" driver and a 75 bass amp which powered a 15" woofer. The preamps for pretty much everything were still 12AX7's or 12AU7's and the power amp was tube as well, the tone boards and pretty much everything else being solid state. The table and diagrams are clickable: Click on a specific tone, and. It will also work for the M series spinets. This page will give you diagrams for Hammond Tonewheel console organs from the model A through the B-3, C-3 and A-100s. It was a later '60s model with a mix of solid state and tube parts. Here is the wiring table for the manuals of a Hammond Tonewheel Organ, along with diagrams of the tone generator. ![]() Picked up a Hammond H-112 organ for $25 for scrap some months ago now. ![]() Just wanted to share what I've been listening to lately.
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