Marshall Amp Forum - View Single Post

solarburnDSL50 · 10-10-2008, 03:35 PM

I'm curious to see where you guys are biasing your DSL100's/50's. I've got Tung Sol EL34B's in my DSL50 and have been messing around with some cooler biases. Right now I've got it set at 33mv. Looks like I'm running mine in the 60% range according to a Jim Jones Bias table located on Weber's site.

Bias chart for EL34's
25 watts disipation.

EL34 - 25W Hot (70%) Avg (60%) Cool (50%)
300V 58mA 50mA 42mA
325V 54mA 46mA 38mA
350V 50mA 43mA 36mA
375V 47mA 40mA 33mA
400V 44mA 38mA 31mA
425V 41mA 35mA 29mA
450V 39mA 33mA 28mA
475V 37mA 32mA 26mA
500V 35mA 30mA 25mA

10-10-2008, 03:35 PM	#1 (permalink)
solarburnDSL50 Senior Member Join Date: Aug 2008 Location: WashingTone Posts: 130	Your bias number for your DSL... I'm curious to see where you guys are biasing your DSL100's/50's. I've got Tung Sol EL34B's in my DSL50 and have been messing around with some cooler biases. Right now I've got it set at 33mv. Looks like I'm running mine in the 60% range according to a Jim Jones Bias table located on Weber's site. Bias chart for EL34's 25 watts disipation. EL34 - 25W Hot (70%) Avg (60%) Cool (50%) 300V 58mA 50mA 42mA 325V 54mA 46mA 38mA 350V 50mA 43mA 36mA 375V 47mA 40mA 33mA 400V 44mA 38mA 31mA 425V 41mA 35mA 29mA 450V 39mA 33mA 28mA 475V 37mA 32mA 26mA 500V 35mA 30mA 25mA __________________ DSL50 - Voodoo modded Fender Tele GT HH coil split 212 G12K-100/V30 Pedals just for the Marshall: Bad Monkey Boosta Grande Wah Aphex Xciter in loop Delay in loop