![]() ![]() I didnt invént the circuits, l simply came up with a slick method to manage the circuits on very neat turret lug boards. You put together Hoffman boards making use of the documents listed under each board What will be a Hoffman plank Hoffman planks are traditional amp circuits that have got long been re-designed using my very own turret lug layouts. Radiotron designers handbook 3rm release - 16 mb Radiotron designers guide 4th edition - 25 mb. My Pipe Amplifier and Harmonica help forum Amplifier support technicians position Pipe amp Schematics and design diagrams Everything from Traditional to Wurlitzer PDF tube amp books that you can download Right click on on the links below and then choose Conserve Target as Save the PDF documents to your pc where you can find them and then go through them via Adobe acrobat Take note that these are usually very large files. ![]() 807 Tube Audio Amplifier Schematic Download Right Click You build Hoffman planks making use of the documents detailed under each board Hoffman Plexi 6V6 Construct Hoffman Blues Junior Conversion Build Hóffman Princeton Reverb BuiId 5F1 Champ Board Build Hoffman AB763 One Channel Build Rack Mount ReVibe Project Hoffman 18 Watt Stout TMB Project Hoffman 18 Watt Stout Project Hoffman 18 Watt Stout Reverb Project. You build Hoffman planks using the records listed under each panel. 807 Tube Audio Amplifier Schematic Download Right Click.You could register or call them for the web address of the scheme. I just went there but couldn't find it because I'm not registered. They were going to make them but when Ted passed the family more or less put it on perminant hold. The late Ted Weber's site has a schematic of his quess on a Standel design. If it were me I'd just use a Showman pre and off to the races. Get a ruler and a pencil and you can design your own power section. ![]() Open it in MS Photo Manager and enlarge it to print full page. All you need is to scan the curve family drawing into you computer. So you can use the 6L6 family of curves and see what you're up against. The 807 was designed to replace the 6L6G for higher frequency transmitting use. Why don't you learn how to work from a set of curves? The best explanation I've seen is in the RCA tube manuals both the receiving manual and the transmitting manual. Most of us don't like UL for guitar but bass is different. Have Phil (Heyboer)give you 40% and 50% taps and see what happen. NOS (jan) 807 only go for about $20 a pair on Ebay. If you run them ultra linear with 40% taps you could go to 600 volts and get some serious power. I don't know for sure but I imagine his plate voltage was around 300 volts anyway. Just a screen resistor like we do all the time. Indeed Bob Crooks who was Standel amps used 807s (very well loved in country circles) didn't use a separate screen supply. You could do it, and the audio files don't run them with separate screen voltage supplys. ![]()
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