If you are interested in learning how to work on tube amps, this is a good amp to start with. Even if it is a Frankenstein, it shouldn't be hard to get it sounding great. I have heard some nice Musicmaster amps that had new tubes, adjusted bias and a new speaker sound good, like a Champ with a larger speaker.
#Fender musicmaster bass amp mods serial number#
Most speaker makers will be able to tell you what the speaker can do if you email them the serial number that is printed or stamped on it. If it's a replacement that is designed for closed cabinet, you could rip the cone. If it's the original speaker it should be no problem. It's a fairly easy modification if you want this changed, and shouldn't cost much if you have a tech do it.īefore taking the back off it, make sure the speaker will be okay with an open enclosure. That results in the amp distorting later and sounding kinda brittle when it does break up.
Some amp makers set the fixed bias a little cold to prolong tube life. There's a lot of talk about modding but I'm not sure I've even got the same amp!Īs far as I can tell, it's a fixed bias that doesn't have an adjustement pot. but everyone seems to know what year theirs was made. It also kills high frequencies pretty nicely which works for my bass.ĭoes anyone have any info about these amps? There's very little info I could find online. It was pretty cheap though, so I guess if I end up not liking it after a while it's no big loss. Sure it's louder, but it doesn't drive as easily and it doesn't sound very good playing my guitar through it (like all the people on Harmony Central rave about). I'm feeling a bit of buyer's remorse, cause maybe I got a crappy one or something. The guy at the store said he thought it was a "Frankenstein" but I'm not really sure. It's quite a bit louder and doesn't breakup very easily nor does it sound as pleasing when it does. The one I took home had a larger cab, 12" speaker with closed back, two 6L6 tubes, and an on/off switch. It was pretty small sounding on bass but had a nice fuzzy break-up around 3 or 4 on the volume knob that really responded to how hard you played. maybe 8", script F's on the knobs, no on/off knob, and it appeared to have smaller tubes. The first had a smaller cabinet (open back) and speaker. Then I saw another one, cheaper, and noticably different. I had my eye on one of these at the local shop but it was too expensive.
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