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Audio and Video Talk
Valves / Vacuum Tubes
LF: RCA branded 6J5 and 76 valves
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<blockquote data-quote="charles" data-source="post: 825797" data-attributes="member: 2759"><p>Hi Kubisi,</p><p></p><p>In the publication of "Valve Amplifiers by Morgan Jones (3rd edition 2003)", page 184 and 185, it refers to distortion Test Results of different 6SN7 and 6J5 valves:</p><p></p><p>"The RCA 6J5 has significant higher distortion than the 6J5GT, probably due to increased numbers of gas ions resulting from outgassing of the metal envelope</p><p>causing increased grid current"). </p><p></p><p></p><p></p><p>Regarding the RF aspect of metal valves. For robustness and shielding applications it works fine.</p><p></p><p>Another important aspect is that metal valves get very hot compared to their glass counterparts. Dissipation of heat is much better with a glass valve. </p><p></p><p>Regards</p><p></p><p>Charles</p></blockquote><p></p>
[QUOTE="charles, post: 825797, member: 2759"] Hi Kubisi, In the publication of "Valve Amplifiers by Morgan Jones (3rd edition 2003)", page 184 and 185, it refers to distortion Test Results of different 6SN7 and 6J5 valves: "The RCA 6J5 has significant higher distortion than the 6J5GT, probably due to increased numbers of gas ions resulting from outgassing of the metal envelope causing increased grid current"). Regarding the RF aspect of metal valves. For robustness and shielding applications it works fine. Another important aspect is that metal valves get very hot compared to their glass counterparts. Dissipation of heat is much better with a glass valve. Regards Charles [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
LF: RCA branded 6J5 and 76 valves
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