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Audio and Video Talk
Valves / Vacuum Tubes
Line Level Tube Preamp
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<blockquote data-quote="Mars" data-source="post: 1078714" data-attributes="member: 817"><p>Here is the circuit I am following (credit to Glassware Audio Design):</p><p></p><p><img src="https://i.imgur.com/ZR4d0HI.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Some notes:</p><p></p><p>Supply voltage is 250V </p><p></p><p>20k value I get by parallel 22k and 220k</p><p></p><p>I am using two 6J5 in stead of a single 6SN7GT tube.</p><p></p><p>For the moment I am running the circuit without the cathode bypass capacitor on first triode.</p><p></p><p>Earth bar is floating inside chassis. I intend to do the double diode connection between IEC earth and chassis</p><p></p><p><img src="https://i.imgur.com/0J8vICw.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Audio earth is supplied by RCA connection to the power amplifier or source. In my test setup the computer is earthed and the JVC power amp unearthed.</p></blockquote><p></p>
[QUOTE="Mars, post: 1078714, member: 817"] Here is the circuit I am following (credit to Glassware Audio Design): [IMG]https://i.imgur.com/ZR4d0HI.png[/IMG] Some notes: Supply voltage is 250V 20k value I get by parallel 22k and 220k I am using two 6J5 in stead of a single 6SN7GT tube. For the moment I am running the circuit without the cathode bypass capacitor on first triode. Earth bar is floating inside chassis. I intend to do the double diode connection between IEC earth and chassis [IMG]https://i.imgur.com/0J8vICw.png[/IMG] Audio earth is supplied by RCA connection to the power amplifier or source. In my test setup the computer is earthed and the JVC power amp unearthed. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Line Level Tube Preamp
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