![]() But to do that even, I would have to change the power transformer or add a small filament transformer somewhere to augment as the 40-18100 PT only delivers 1.1 amp (and it runs pretty hot even with the one 12AX7 and two 6AQ5's I used). Fender Musicmaster Bass Amp Aussie Guitar Gear Heads Site Resources In The Shed Fender Musicmaster Bass Amp Fender Musicmaster Bass Amp Started by Timbo, February 03, 2019, 10:32:36 AM Previous topic - Next topic 0 Members and 1 Guest are viewing this topic. I too have left plenty of room on the board for further modification but, in my case, because I started with a little Acoustic G-20 as the donor amp, my chassis would be the more limiting part for me to expand should I later decide to redo with added tubes (as well as the space around the speaker when mounted in the cabinet). ![]() I built one last year, but mine was only slight modded from the original, So I used the solid state rectifier and the replacement transformer set for the Musicmaster from Classictone (PT = 40-18100, OT = 40-18101, Driver = 40-18093). Adding artificial center tap and heater elevation 8. Increasing first filter cap from 20mf to 30mf 6. Out of a small collection of silver face Fender amps the Musicmaster Bass may be. What power transformer is being used? I see that you have modded yours using a different one as you have switched to one that supports a 5V rectifier tube. Changing tone control to bass frequency weighted tone tilt stack ala Blencowe 5. (otisserie) on Instagram: A Favorite Sneaky/Not So Sneaky vintage Fender Amp, Like almost Everything Tube Powered that. There are a couple of mods you can do to these amps to really wake them up.
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