TMB - No Master
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Re: TMB - No Master
Sounds great! Classic Marshall crunch. After years of playing Fenders and trying to get a Marshall sound with pedals I realize there is no substitute for an actual Marshall circuit. Doesn't take much boost from a low gain overdrive pedal to really nail those classic rock sounds - AC/DC, Zep, etc.
Can't believe how quite the amp is. I used carbon comp resistors throughout and there is only the slightest hiss.
I love the Normal Channel, but the TMB Channel seems a bit too gainy, kinda strident on the top-end. Even with the TMB V1 cathode at .68uF/2.7k. I have 2uF/2.2K on the other channel. Maybe I have them reversed? Pin 3 is TMB right?
I also tried using a 2.7k resister on the V3 cathode and that seemed to increase the gain on both channels. Opposite of what I thought would happen. Would that affect the power tube bias?
Most everything I read is about increasing gain, and I'd like to tame it down just a bit. Maybe a 5751 or 12AY7 in V1?
Thanks for the help. This site is awesome!
Can't believe how quite the amp is. I used carbon comp resistors throughout and there is only the slightest hiss.
I love the Normal Channel, but the TMB Channel seems a bit too gainy, kinda strident on the top-end. Even with the TMB V1 cathode at .68uF/2.7k. I have 2uF/2.2K on the other channel. Maybe I have them reversed? Pin 3 is TMB right?
I also tried using a 2.7k resister on the V3 cathode and that seemed to increase the gain on both channels. Opposite of what I thought would happen. Would that affect the power tube bias?
Most everything I read is about increasing gain, and I'd like to tame it down just a bit. Maybe a 5751 or 12AY7 in V1?
Thanks for the help. This site is awesome!
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Re: TMB - No Master
Congrats on getting a great tone! We often debate the best parts to use in the build, but a clean build is always the best build regardless of the type of resistors or caps in an amp.sruffinc wrote: ↑Mon 11/04/19 1:22 pmSounds great! Classic Marshall crunch. After years of playing Fenders and trying to get a Marshall sound with pedals I realize there is no substitute for an actual Marshall circuit. Doesn't take much boost from a low gain overdrive pedal to really nail those classic rock sounds - AC/DC, Zep, etc.
Can't believe how quite the amp is. I used carbon comp resistors throughout and there is only the slightest hiss.
I love the Normal Channel, but the TMB Channel seems a bit too gainy, kinda strident on the top-end. Even with the TMB V1 cathode at .68uF/2.7k. I have 2uF/2.2K on the other channel. Maybe I have them reversed? Pin 3 is TMB right?
I also tried using a 2.7k resister on the V3 cathode and that seemed to increase the gain on both channels. Opposite of what I thought would happen. Would that affect the power tube bias?
Most everything I read is about increasing gain, and I'd like to tame it down just a bit. Maybe a 5751 or 12AY7 in V1?
Thanks for the help. This site is awesome!
I don't have time to look at what you're trying to do right now, but try this out: look at the options for more gain that you've reviewed. Try the opposite. If a resistor is normally 100k, and it says use 120k for more gain, try an 82k instead. Make sure you know what part your modifying before you do tho.
Maybe somebody else can chime in to help more with that.
Thanks,
Josh
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Modern Ground Schemes
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