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Re: 5e3 for harp?

9/27/2005 8:17 AM
Chris/CMW amps	Re: 5e3 for harp? Hi all Part of the 5C3 sound is also due to the paraphase inverter. You can compare a 6SL7 to a lower gain and very spacious/woody sounding 12AX7, a 6SN7 is kinda like a 12AU7. Bruce Collins did make some excellent suggestions in the past regarding harp-mods for the 5E3. General harp-mods from my experiences for various customers; - big coupling caps (stock 5E3 values are ok) - big cathodebypasscaps (stock 5E3 values are ok) - pretty low plate- and powersupply voltages for the pre-amp (larger value dropping-resistor and/or plate-resistor) - not (too) much highs (like normal channel 5E3) Most harp-players do prefer 8" or 10" speakers. Hope this helps, Chris

9/27/2005 8:17 AM

Chris/CMW amps
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Re: 5e3 for harp?

Hi all

Part of the 5C3 sound is also due to the paraphase inverter. You can compare a 6SL7 to a lower gain and very spacious/woody sounding 12AX7, a 6SN7 is kinda like a 12AU7.
Bruce Collins did make some excellent suggestions in the past regarding harp-mods for the 5E3.

General harp-mods from my experiences for various customers;
- big coupling caps (stock 5E3 values are ok)
- big cathodebypasscaps (stock 5E3 values are ok)
- pretty low plate- and powersupply voltages for the pre-amp (larger value dropping-resistor and/or plate-resistor)
- not (too) much highs (like normal channel 5E3)

Most harp-players do prefer 8" or 10" speakers.

Hope this helps,

Chris