3/12/2023 0 Comments Ab763 bandmasterI doubt they were trying to 'power' the heaters. Is there anything else I should check? I'd hate to fry a new transformer because of something I've overlooked. It does need updated with a 3 prong cord and rewired properly (+ remove the death cap). Other than that, I'd like to leave it stock as much as possible. I also need to recap all the electro's under the doghouse, bias cap, and board. I'm assuming I need a new power transformer and to rewire the entire heater system. One of the 6L6's also had very loose pins on the tube. I'm not sure if a power tube originally shorted from pin 3 to pin 2 and fried the center tap and then they tried to mod it? Without any tubes in I have continuity between the two sets of heater wires. Someone had the idea of tapping into the 440V control grid pin to create a voltage divider with a 470k/12k which works out to around 10V to power the heaters. ![]() The center tap for the heaters is fried/damaged and has damaged the insulation on the 320V center tap. It's original minus a mod that someone did to the heaters. It pretty much sat in a basement for 30 years. The seller said it was his friends and that it was given to him. I bought it as not working but took a gamble on it. I recently acquired a 65 blackface bandmaster. For example, many people think the AC568 circuit is very sterile, while the desired AB763 circuit sounds great - the first silverface models (aluminum trim/Fender tail/black lines) might have either one.Īlso, if I remember correctly, Bandmaster Reverbs do not have the exact same circuitry as Blackface non-reverb Bandmasters because of the extra reverb gain stage (i think it's 1069 or 1096 or something like that).īut with a 1964 Bdmstr, you probably have a AA763 or AB763 - but I would check and make sure someone didn't play with it.Hello all! I introduced myself yesterday in the welcome area During the transition years, circuits changed a ton - the only way to really know what circuit you have is to open up the chassis and look. The only thing I would say is to be careful when you buy a Bandmaster head. And to really be in line with Stevie Ray (asides from ability), I guess a 4x10 Super Reverb with a Tubescreamer would be more desirable than a 2x12 Bandmaster (didn't Noel Redding use a Bandmaster for bass?) ![]() Soundwise, I think Bandmasters are more in the line of the Fender Vibrolux/Twin Reverb/Showman family, not the Fender Bassman and Deluxe Reverb sounds. I ended up swapping in a Bassman output transformer and some 7581a power tubes, and it's my favorite amp right now. Save up for an original Deluxe, or maybe get a reissue Vibrolux.Ī couple years ago I was able to sell my 66 Vibrolux and pick up a 66 BF Showman, 68 SF w/trim Bandmaster, an unloaded BF 66 Tremolux cab and an unloaded BF 66 Bandmaster cab (the smaller one) with the money - I believe the Bandmasters are still one of the best deals for Fender. If it's more than that, it's only because it's a pre-CBS Blackface, not because it's incredible, sound-wise. I would not pay more than $500 for it (the head) though. ![]() I had a Bandmaster rig with head and 2 X 12 cab that couldn't have been more than $375 for everything, but that was the '80s. Bandmasters were always sort of considered the poor kid's Fender-I remember when those black-face heads were easily gotten for $100 to $150. I paid $500 for it about three years ago. I have had vintage Supers and Twins and Deluxes, and I won't say it's in the same class with those, but these days it's my only Fender. I don't find mine to be overly bright, but I DO have to keep the bass pot down to like 2 or 3. Great clean sound, and surprisingly great for overdriven lead guitar using a Les Paul or humbucker Gibson. I record with it all the time and love it. The reverb version is quite rare, but other than that, it has the same circuit as the black '64 you're talking about. I have a first generation silverface Bandmaster Reverb, 1968/9.
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