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Audio and Video Talk
Valves / Vacuum Tubes
Impedance of OPT
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<blockquote data-quote="El Sid" data-source="post: 833679" data-attributes="member: 18550"><p>The Partridge OPTs on the amp I recently acquired are marked 8000 Ω as shown below. I am assuming that this means that the anode of each PP valve is seeing 4000 Ω, which translates to turns ratios of 32 for the 3.75 Ω speaker tap and 16 for the 15 Ω. Please confirm that I'm not talking :cr@p:</p><p></p><p>(If you don't trawl the DIY section, see my idea for the design: https://www.avforums.co.za/index.php/topic,69276.0.html )</p><p></p><p><img src="https://i.imgur.com/G23JfgBm.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="El Sid, post: 833679, member: 18550"] The Partridge OPTs on the amp I recently acquired are marked 8000 Ω as shown below. I am assuming that this means that the anode of each PP valve is seeing 4000 Ω, which translates to turns ratios of 32 for the 3.75 Ω speaker tap and 16 for the 15 Ω. Please confirm that I'm not talking :cr@p: (If you don't trawl the DIY section, see my idea for the design: https://www.avforums.co.za/index.php/topic,69276.0.html ) [IMG]https://i.imgur.com/G23JfgBm.jpg[/IMG] [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Impedance of OPT
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