Hello. I was wondering of I could get some facts and opinions. First of all, this is my goal. Make a stereo amp to match the guitar I rewired to be stereo. One pickup to one channel, the other to the other. Standard Gibson theory there. I have built the stereo prototype and it sounds pretty good, but I still want to fine tune it, and possible tune it to reflect the strengths of the neck and bridge pickup respectively. At this moment I am still playing through each channel separately as it gives me some insight into the tonal changes I'm making to one in real time. Super handy.
As you can see in the schematic I have some thoughts and goals with the current design. Voltages are a little high, but I'm on the fence if this will be a real issue other than burning up tubes a little faster. They are easy to come by so no real issue there other than wasting tubes for what may not actually be any improvement in sound.
Questions: have I done anything stupid in the schematic? I know enough to get myself into trouble, and am working on learning enough to get myself or again. Suggestions are welcome as far as changes that people have tried and liked. Or, downright stupid things I have done and really need to change.
My other question is about a good way to mix a mono signal into the amp so it splits out both power amps (also in mono). In case I just want to play a normal guitar and don't need the stereo setup, but don't want to waste an entire side of the amp. There is a thread in here regarding this, but it rapidly moves away from what I think is useful for my purposes. My thoughts started with a phase inverter to split the signal, and it would probably work but there are phase reversal things I would need to do, etc. someone suggested using a cathode split (if I want a no gain buffered splitter), or a anode split of I want some gain from the buffered splitter. Placing this in front of both 6au6's seems smart to reduce noise. I'm pretty in the dark on this as design. I want to make sure I don't lose any signal in the split, if anything, maybe get a little more control because I would have two amps that sound slightly different that hopefully compliment each other. I don't have any intention of adding tone controls to either channel (yet), but I'm always open to good suggestions. Maybe a switch to move choose different coupling caps. This value did seem to make some big differences when I was fiddling with the first build. My transformer has enough juice for a couple more preamp tubes, but I'm thinking 6av6 or 6at6 for the buffer/splitter tube. I like the idea of keeping it 7 pin... don't look at the rectifier. it never happened 😀
So, after that long winded window into my thought process. Thoughts?
Also, as a quick note. The Silverstone 1301 was a big inspiration for the design. Also Les Paul jr, champ 5c1, and magnatone aloha. Anyway, 6sj7/6v6 designs are way easier to come by than 6au6/6aq5, and they are pretty interchangable.
As you can see in the schematic I have some thoughts and goals with the current design. Voltages are a little high, but I'm on the fence if this will be a real issue other than burning up tubes a little faster. They are easy to come by so no real issue there other than wasting tubes for what may not actually be any improvement in sound.
Questions: have I done anything stupid in the schematic? I know enough to get myself into trouble, and am working on learning enough to get myself or again. Suggestions are welcome as far as changes that people have tried and liked. Or, downright stupid things I have done and really need to change.
My other question is about a good way to mix a mono signal into the amp so it splits out both power amps (also in mono). In case I just want to play a normal guitar and don't need the stereo setup, but don't want to waste an entire side of the amp. There is a thread in here regarding this, but it rapidly moves away from what I think is useful for my purposes. My thoughts started with a phase inverter to split the signal, and it would probably work but there are phase reversal things I would need to do, etc. someone suggested using a cathode split (if I want a no gain buffered splitter), or a anode split of I want some gain from the buffered splitter. Placing this in front of both 6au6's seems smart to reduce noise. I'm pretty in the dark on this as design. I want to make sure I don't lose any signal in the split, if anything, maybe get a little more control because I would have two amps that sound slightly different that hopefully compliment each other. I don't have any intention of adding tone controls to either channel (yet), but I'm always open to good suggestions. Maybe a switch to move choose different coupling caps. This value did seem to make some big differences when I was fiddling with the first build. My transformer has enough juice for a couple more preamp tubes, but I'm thinking 6av6 or 6at6 for the buffer/splitter tube. I like the idea of keeping it 7 pin... don't look at the rectifier. it never happened 😀
So, after that long winded window into my thought process. Thoughts?
Also, as a quick note. The Silverstone 1301 was a big inspiration for the design. Also Les Paul jr, champ 5c1, and magnatone aloha. Anyway, 6sj7/6v6 designs are way easier to come by than 6au6/6aq5, and they are pretty interchangable.
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