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Audio and Video Talk
Valves / Vacuum Tubes
ecf80 in place of ecf82 in Radford sta25?
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<blockquote data-quote="Ampdog" data-source="post: 832458" data-attributes="member: 144"><p>In practice types 6U8, 6GH8 and 6EA8 are exchangable for audio (differences will mainly have an influence in r.f./tv work, for which they were all developed). A greater practical 'worry' is the spread in valve characteristics often found these days, as I have mentioned before. (The ST25 has a rather singular phase inverter for which it is unclear to what degree different valves will have an effect.)</p><p></p><p>Using an ECF80 (equiv. 6BL8) will give you signal, but one will have to check operation to find what audible difference might result.</p></blockquote><p></p>
[QUOTE="Ampdog, post: 832458, member: 144"] In practice types 6U8, 6GH8 and 6EA8 are exchangable for audio (differences will mainly have an influence in r.f./tv work, for which they were all developed). A greater practical 'worry' is the spread in valve characteristics often found these days, as I have mentioned before. (The ST25 has a rather singular phase inverter for which it is unclear to what degree different valves will have an effect.) Using an ECF80 (equiv. 6BL8) will give you signal, but one will have to check operation to find what audible difference might result. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
ecf80 in place of ecf82 in Radford sta25?
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