To me it looks like something worth fixing....
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Show posts MenuQuote from: darwindeathcat on February 27, 2008, 01:59:39 PMQuote from: syndromet on February 27, 2008, 06:58:20 AM
II would drop the buffers, and use the preamps straight, just for simplicity. I think most of the ROG designs buffer the signal anyway.
Actually, following teemuk's advice I was thinking that I would extract the buffer portion of the ROG designs, and put a single buffer in front of the switch (input buffer in my schematic). I think that most of the ROG designs use a very similar buffer. Either way, I think a simple fetzer valve can be used to replace the stock buffer in any of their designs (I know this is definately true for the ruby). I think your right about diching the output buffer.
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Then, I guess I'd have at least a gain pot per channel, and perhaps a couple of switches (for grit and whatnot, depending on the circuit I would choose). This way, you can have each channel adjusted the way you like it, and when you switch into it, you don't have to fiddle with any pots. Perhaps a volume pot per channel is not necessary if I have a master volume control right before the power amp? I'd stick a tone stack after the preamp stage, so it would be a common setting.
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The easiest switching would definately be a double gang rotary (or a dpdt if you only have 2 channels), and wire it to switch like in my schematic. Each preamp circuit would always be getting power, but would not be connected to a signal at it's input or output unless switched to. A footswitch would be very useful, but I have no idea how they work, so I couldn't even think about designing one!
Quotegreat choice of preamps. Personally i would dropp the BM Ruby for an eighteen, simply because I think the Proffessor tweed an the BM Ruby sounds a lot like each other. I also think the eighteen is the best pedal designed by rog ever...
Right now I'm think of building a 4 channel setup with the channels being 1)Proffessor Tweed 2)bassman ruby 3)Odie 4)Clean ...
Maybe a lm3875 for the power amp?