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My Blackface mod has good high and bass, but not much of middle. It came with couple of orange drop caps(I got an used one). They looked the stock values according to the component spreadsheet. If anyone can give me an guidance how to increase middle, I'd appreciate it.

I'm looking for RM1250 in good condition. Thanks

I tried A500k and A1M. Still the same problem. Volume(level knob) is very weak with the gain until noon.

No, it has 'A1M'. Volume(level) pot is 'A500k' I'll try A500k once I get it.

It sounds ok, but I never tried real Fender Deluxe amp, though. One problem is the gain pot. Volume is very low until I crank up the gain till 2 o'clock. 7 to noon, I can hardly hear the sound. Gain pot value is 1M. Shouldn't it be 500k according to module spreadsheet?

I just got an used DLX module. It was very clean and in good shape. I found couple of orange drop caps in the PCB. Did Randall put any Orange drop caps in the modules? https://goo.gl/photos/95nZLPZFgjZHFMeD6

ok, I tried changing R17 and R28. But somehow it added more gain to my CLEAN module. I changed them back. My Blackface module had 1.8K for R17, but the 'MTSmodulevalue spreadsheet' has 4.7K for R17. So I tried 4.7k and suddenly my Blackface got more headroom. I have no idea whether this make...

R25 is 100k

Wow! Great info. I'll try them soon. This is the info that I've been looking. R28 of my Blackface and CLEAN are 220K, so I'll try 200k and 180k. https://goo.gl/photos/ZjAiGLbg7La3HZGw7 For R17 and R29, Blackface has both 1.8kohm, but my CLEAN module has 4.7k for R17 and 1.8k for R29. Should...

Dear CrunchBunch, I just finished mods as you recommended and my CLEAN module is much better sounding now. The darkness is still there but not in a bad way. I also applied the mods to my Blackface module and it's more lively sounding. I tried 820 ohm for R10, but I had to get it back to 1k...

Thanks for the info. I will try tonight and let you know. Regarding R10, if I replace it with 1.2K or 1.5K, will it improve headroom? I want my CLEAN and Blackface stay as clean as possible with no drives or breakups even with Gain knob over 2 o'clock or higher.

yes, I did refer your spreadsheet. According to the sheet there aren't supposed to be any caps in C7 and C13. But my CLEAN module has 22uF in C13. This made me confused..

Thanks Trimix, So I guess CLEAN supposed to be dark..

I just bought an used CLEAN module with black stripe. I tried it and it's very dark sounding, too dark even for Jazz. I remove the tube bracket to see if there's any mod were done. I found out that C7 cap were removed. (C7 is in between tubes) I can still see what's left of the legs of the cap...

My local tech took my RM4 apart and he couldn't tell me what exactly was wrong and he said he will try new optocouplers. Since it might take more than a week or two, I brought RM4 back home. I plugged RM4 with my rig and... The problem was all gone. Everything was normal again. My tech took...

No, I didn't. no need to. I'm using G-system to select the channels.

If I'm not using any loops, can I remove those 3 tubes in RM4? Thanks in advance.

My RM4 had a channel switching problem. Channel 1 was always on. I had to take the module out from channel 1, then everything was fine. I put a new MIDI board and the problem went away. About a month and a half later, the problem came back. This time channel 2 LED keeps coming back and the...

Why there are two post loop outs in RM4? For stereo set up?

I have RM4 and RM50. Can I use simple truebypass 2 ch loop box to make 6ch amp? Signal chain would be; guitar -> loop box in -> (ch A send->RM4 input -> RM4 ->RM4 send ->ch A return) / (ch B send->RM50 input -> RM50 ->RM50 send -> ch B return) -> loop box out -> RM50 return Will this work? I...