- #Fender musicmaster schematic install#
- #Fender musicmaster schematic mods#
- #Fender musicmaster schematic tv#
Looks to be the same specs as stock but its much thicker for better cooling? There is a new PT in this thing,I'll include a photo of the specs. I'm hoping that new filter caps will help here. There is some power supply noise that remains constant regardless of the vol/tone settings. But I kinda doubt it now.Really a great,clean little handwired Fender amp.
#Fender musicmaster schematic mods#
I thought I would be doing a bunch of the recommended mods like the tone control mod,hasselbrock mods,jumpering the RF blocking cap etc. Ok, the amp arrived and she works great.Instantly greeted me with a beautiful Fender clean tone. To me the DC blocking aspect of it is important, especially in this day and age of a huge pile of effect pedals on a "pedal board" in front of the amp, especially if older FX pedals are used. As I mentioned earlier, the real RF problem with amps like this is that which occurs because the input jack loses a solid ground connection. The amp really doesn't have the bandwidth for RF to be much of a problem.
#Fender musicmaster schematic install#
But pardon my being a smart Alec, but might as well install garlic cloves to ward off elephants. If you wasn't to stick one in there anyway, yes it will not hurt anything. it won't affect anything the amp is likely to do. If you remove it, I see no benefit adding the bead. never mind that the effect would be outside the audio range or some such. Someone rationalizes that such and such effect would be diminished by some mod. A lot of mods are common, and a lot of those common mods are done for specious reasons. You can tack a wire across it when you get there just to see if it affects the sound of the amp. But the amps still got UL certified.I do advise against removing it. In some older Fender amps, the presence pot actually can have a low dc voltage on it - I mean the pot itself.
So I think in practice, the only significant risk is that they break eventually, if wired according to regulations. And finally, they have to pass stringent official tests to be able to be used in this application in a production amp like a Fender. They are made as separate units, which then get attached mechanically to the volume pot, and which will have thick plastic sides, thicker than any high voltage wire in the amp. They should be wired only to the neutral side of the mains, which theoretically is at zero volts, or near that - what the switch does is just complete the 'on' circuit. As was mentioned earlier, this is a bit of a safety concern.I'm not crazy about them myself- but I think it's intuitive, rather than rational. I myself, am not wild about on and off switches for high voltage circuits being from the volume knob. As was mentioned earlier, this is a bit of a safety concern.ģ. Be prepared to do some searching for replacements, and if you want NOS, spending even more than what used sweep tubes normally go for.ģ. So replacements are more difficult to find than 6L6s, 6V6s, E元4/6CA7s, etc., and can be pretty expensive (a few years ago, I spent over $90 for a pair of USED 6KD6s, that looked, to be in OK shape, so I'd have a set up backup final/power tubes for a 46 year old Yaesu FTdx-401b ham radio I have, that puts out about 300 watts of power). Unfortunately, ALL sweep tubes are extinct nowadays - they haven't been made in decades.
#Fender musicmaster schematic tv#
Sweep tubes were originally developed to help run the sweep circuits for TV picture tubes, but were discovered to work fine as power tubes (with certain restrictions needing to be kept in mind - they don't tolerate being out of resonance/tune in radio application ), and due to their low cost (you used be able to pick up replacements cheeep at your neighborhood drugstore), were used in some amplifier circuits. Oh yeah, and don't expect super loud - the amps put out 12 watts of power.Ģ As was mentioned, the earlier versions of the Musicmaster Bass amp use 6AQ5 tubes. In a way, they're almost like a poor man's Tweed Bassman. They can get pretty dirty sounding, when turned up. If you want squeaky clean sound, a Musicmaster Bass amp isn't for you.
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