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31st March 2007, 02:56 PM
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#21 |
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diyAudio Member
Join Date: Mar 2007
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Hi Ulibub
 Many thanks for your reply. Comments about cathode resistors in the Sopht amps duely noted. Until I find an output transformer or two I'm stuck with experimenting with preamps anyway - I'll let you know how my ECH83 experiments go. |
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13th April 2007, 03:11 PM
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#23 |
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diyAudio Member
Join Date: Mar 2007
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HOLY CRAP - this sounds AWESOME for guitar!
I've just built it as per your original schematic with all caps .0473 and omitting the 100K resistor before the heptode grid (so just the coupling cap and the 1M grid resistor). The output goes into a 100K lin pot then to a TDA2030A power amp. I've started a thread to document the progress of this amp - but engels, if you haven't built your design yet, it's well worth it! |
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