I can send you the schematic for this if you want. My wife's Gibson 339 sounds real good through it, as it is a bit of a bright guitar. With the volume control stacked on the top of the on/off switch, I had to carefully disassemble and change the resistor plate in the volume control from 250K to 1meg. Also, I prefer 6V6's, and took out the 6AQ5's. I didn't desecrate the faceplate, I made a new one. I changed my musicmaster to a standard Fender front end with a 1meg volume, 250K treble and 250K bass control between V1A and V1B. I was stuck with them too much in the 60's.
#Fender musicmaster bass amp mods mod
I won't mod a blackface or earlier, but for me certain silverfaces are open game. And push pull on the cathode biased power tubes took me back to the old Princeton I once had. The transformer phase inverter was unique. I picked up a Musicmaster Bass amp in the mid 90's. Also blues Jr.s are dark sound and I never liked the tone no matter what I did to it. The blues junior reverb is solid state anyway and a reverb pedal would probably sound better then anything the blues junior would give you. I have had blues juniors and I think this setup would sound a lot better. An amp with 2 would really push a higher efficiency 12 like a blue or red fang or any other emi speaker which all have very high SPL levels and sound great. I had a few of those Blackheart amps with an EL-84 and they were pretty loud with a speaker like a celestion Blue. This setup will probably give you about 10 watts. You could also make a tone stack easily by moving the volume control to the second input and using the volume/tone controls as a treble mid with either a typical Fender or Baxandall tone stack. Fender Musicmaster Bass amp - 6AQ5 version. If you use the Hammond it's a matter of making an extra hole to mount it. Amp Schematics to assist you with your amplifier repairs and modifications. Not much work to do.and you don't have to hack the amp apart. It's better to probably use a Hammond SE 10 watt OT at 2.5K primary for this setup. You could probably use the same OT just eliminate the middle wire. Hook it all up the same as a champ amp but parallel the power tubes. 022 cap, grounded 220k resistor and a 1.5K screen resistor. How about making this amp a champ amp but with paralleled power tubes.ĭisconnect the PI transformer and add a. Here's some of the projects I've worked on lately. I was thinking that maybe just adding a Hammond reverb unit to the Stout might be another option. I would'nt be looking for another amp if it wasn't for the fact that my Stout doesn't have reverb or that Fendery gangle when I want it. They were pretty much what I was thinking too if I had the time. The 18W Stout(Blues Bandit) I did build took alot of time and I'm pretty burned out from major projects. I have way too much honey-do stuff to do and I simply can't find the time. I'm trying not to take on any more major mods/builds. I'm going to put it towards a Hot Rod Deluxe or perhaps a Blues Jr.īigdaddy. yeah, that's what I intend on doing with it. They make a decent guitar amp platform.albeit simple.Įleventeen. BTW.this amp is(I've read) considered to be not exactly one of the best bass amps made. Or I may leave it by the side of the road to paraphrase John Prine.Thanks Dave, I forgot to add to my original post that I did remove R1 and jumpered.
The sky may be beyond crying it may be laughing hysterically.Įventually my stealth amp project may retain only the nameplate and cabinet. I could have had a Fuchs Lucky 7, Gries 5, Savage Macht 6, Reeves 6, even a Richter 5e3, a Valvetrain Tall Boy, and others. Anyone who has played his Tubesville amps can attest to his insane genius. one being the changing of the value of the coupling cap and a Tone control mod. The blueprint I mentioned was probably the wrong wording for Blackie adding some of his mojo. Fender Musicmaster Bass amp maintenance 08-27-2017, 04:54 PM. I am a late-comer here, but I have found it a great place to gain insight and knowledge.
I am sure of one thing though, someone here does. What resistors etc are needed for such a thing I don't know. The tweed tone stack may add the highs back but not scoop the mids. The bass amps probably rolled off the highs with an appropriate resistor or two. Then, I think, came the blackface circuits with scooped mids and so on. What I think is that the tweed amps had a fat midrange, which probably was viewed as muddy back in the day by some players. Me, I'd be better off trying to translate Sanskrit. I'd say the Fender Field Amp Guide and a study of schematics there would be useful if you can read that language.
I wish I knew what a tweed tone stack is, but I don't.
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