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#1
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Newbie question
In searching this NG, I found the following:
"The Hammond 269JX (or 369JX for 230 volt mains) would supply 250-0-250 at up to 60 mA, plus 6.3V at up to 2.5A for the 5Y3 (use a 0.68 ohm, 5 watt resistor to drop from 6.3V to 5V)." posted by Fred N. a few years ago. I wondered whether one could replace a 6X4 with a 5Y3 in a rectifier circuit merely be putting a "0.68 ohm, 5 watt resistor" in series with the heater. I've never modified an amp before, and am interested in the compression/output tube distortion increase afforded by swapping in a 5Y3. The application is a small, single-ended 6V6 amp that's = 10W, used solely for guitar. Any advice would be much appreciated. --Bryan |
#2
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a 5y3 needs another winding from the transformer
5v AC, it has to be isolated from 6.3. a 6x4 is indirectly heated, the 5y3 is direct heated. wrote in message oups.com... In searching this NG, I found the following: "The Hammond 269JX (or 369JX for 230 volt mains) would supply 250-0-250 at up to 60 mA, plus 6.3V at up to 2.5A for the 5Y3 (use a 0.68 ohm, 5 watt resistor to drop from 6.3V to 5V)." posted by Fred N. a few years ago. I wondered whether one could replace a 6X4 with a 5Y3 in a rectifier circuit merely be putting a "0.68 ohm, 5 watt resistor" in series with the heater. I've never modified an amp before, and am interested in the compression/output tube distortion increase afforded by swapping in a 5Y3. The application is a small, single-ended 6V6 amp that's = 10W, used solely for guitar. Any advice would be much appreciated. --Bryan |
#3
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What about a 6ax5?
--Bryan |
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