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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Choke for Music Reference RM-9 posted by audioeyedoc on April 7, 2021 at 13:41:38:
The RM 9 MKII had two chokes after the voltage doubler, one for each channel. Following the chokes were two 1000mfd 250vdc caps wired in series, which yielded 500 mfd at 500vdc. Roger Modjeski did not reveal where he purchased the chokes, but he did tell me that the DCR was 5 ohms. Given the size, they could not have been more than .3 henry (300 millihenry). The additional chokes and caps did make a noteworthy improvement. This power supply improvement and fusing each output tube are the differences between the RM 9 and RM 9 MKII.
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Follow Ups
- Chokes after the voltage doubler - garymuffley 12:01:04 04/08/21 (10)
- Edcor USA has suitable chokes - tweakydee 12:14:56 04/11/21 (1)
- Speaking of Edcor... - Triode_Kingdom 12:54:15 04/11/21 (0)
- RE: poking Duster about discrete op-amps - audioeyedoc 13:27:03 04/08/21 (7)
- That's the right value, but.... - garymuffley 00:49:08 04/09/21 (5)
- That's the right value, but - audioeyedoc 07:11:47 04/09/21 (4)
- Excellent idea. - garymuffley 10:10:48 04/09/21 (3)
- RE: Excellent idea - audioeyedoc 14:05:54 04/09/21 (1)
- Ne plus ultra RM 9 - garymuffley 11:11:16 04/12/21 (0)
- +1 nt - Tre' 12:39:56 04/09/21 (0)
- RE: Chokes after the voltage doubler - audioeyedoc 13:29:25 04/08/21 (0)
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