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Modular Amps
Egnater / Randall Modular Amps
Hello again all!! ...determining plate voltage of the RM100
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<blockquote data-quote="Julia" data-source="post: 54651" data-attributes="member: 1784"><p>It will also vary per line voltage. </p><p></p><p>IMO you should bias your amp when your line voltage is reading it's highest.</p><p></p><p>And for brand new tubes, I'd run them at about 60% for the burn in period.</p><p></p><p>FYI, i've done the calculations for the RM100 based on the 530V. Valve info from the companies (JJ, SED, New Sensor) Here they are. The low end is 50% and the high end is 70%. I wouldn't go higher than 70% unless you've managed to contract Cesar Diaz to keep your amp running. </p><p></p><p>EL34/E34L/KT77/6CA7 (these tubes rated at 25W): 23.6 mV to 33.0 mV</p><p>6L6/5881 (these tubes rated at 30W): 28.3 mV to 39.6 mV</p><p>6550 (these rated at 35W): 33.0 mV to 46.2 mV</p><p>KT88 (JJ rated at 42W): 39.6 mV to 55.5 mV</p><p></p><p>60% seems to be pretty decent. Right now I just want stable.</p></blockquote><p></p>
[QUOTE="Julia, post: 54651, member: 1784"] It will also vary per line voltage. IMO you should bias your amp when your line voltage is reading it's highest. And for brand new tubes, I'd run them at about 60% for the burn in period. FYI, i've done the calculations for the RM100 based on the 530V. Valve info from the companies (JJ, SED, New Sensor) Here they are. The low end is 50% and the high end is 70%. I wouldn't go higher than 70% unless you've managed to contract Cesar Diaz to keep your amp running. EL34/E34L/KT77/6CA7 (these tubes rated at 25W): 23.6 mV to 33.0 mV 6L6/5881 (these tubes rated at 30W): 28.3 mV to 39.6 mV 6550 (these rated at 35W): 33.0 mV to 46.2 mV KT88 (JJ rated at 42W): 39.6 mV to 55.5 mV 60% seems to be pretty decent. Right now I just want stable. [/QUOTE]
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Modular Amps
Egnater / Randall Modular Amps
Hello again all!! ...determining plate voltage of the RM100
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