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RE: DHT "El Cheapo"

It's no longer 'el Cheapo' once you start stuffing rare and valuable tubes into such a circuit

You would be better off looking up the 6P23P which has 11 watt dissipation and mu of 8 (rather than mu of 5.6 for the 46) . It should drop straight in (apart from using lower value grid leaks) and costs a few dollars a piece . I would recommend a separate filament transformer though for the 6P23P . More power , cheaper and more repeatable than a 46 , surely worth a try :)

ps Avoid DN2540 cascodes , high impedence but not across the whole audio band as not particularly low capacitance . use a DN for the top but look into more suitable devices for the lower such as a JFET

George


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  • RE: DHT "El Cheapo" - GeorgePope 09:15:58 03/15/17 (1)

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