Well I finally found my way here. This seems to be a great place to learn about tube amps. I'm Bruce and a huge lover of music. Anything from Bluegrass to Hard Rock. Probably no surprise but, I tend to gravitate to Blues and Classic Rock. Imagine that. I don't work as an electronic tech, even though I have a degree in Electricity and Electronics from years ago and they told me relays and tubes were on their way out. Since graduating, I have been working in Railroad Signalling where vital B1 & B2 relays are still thriving and here I am learning about the best guitar amps made, powered by the venerable vacuum tube. I've made a rather large collection of Strats, Teles and a couple Jazzmasters as well. I really enjoy the different guitars with different pickups. I really dig a good P-90 and absolutely love Wide Range Humbuckers. I even shoe-horned them into a couple Strats. Any way, I'm glad to be here and it's just a matter of time before I build something. I have several Silverface Bandmasters, 3 71s and one 75 which has a Master Volume BUT is NOT an Ultra-Linear with the solid state rectifier. It still has the 5U4GB rectifer, Score! I didn't know they made these. One of my 71's came with a couple mods, a variable NFB and Tremolo off switch to bump up the gain. When I got it it had issues which led me to doing some trouble shooting. First off I found 2 cold solder joints which I fixed & that took care of the intermittent drop out of audio but the next took a little research. No Tremolo. It took me a few times to realize I actually had Tremolo, I just had to turn the Intensity to 9 and there it was. It turns out the On/off rotary 50K pot wasn't a Reverse Audio. They apparently don't make those so thanks to Rob Robinette, I disassembled a 50KRA pot and took it's resistor element and put it into my existing switched pot. This took some shade tree engineering as they were 2 different brands, but I got it done and now I have functioning Tremolo! This amp is serving as my test case to determine what mods I would like to incorporate into a modified AB763 Vibroverb head build. After lurking around here a few days, I kinda feel like I might like to do something in Tweed now too. You guys may be contributing to a new disease of mine.
Topic: Greetings and Salutations! (Read 807 times)