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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: My question was meant to be generic posted by 1973shovel on March 11, 2015 at 02:51:55:
The Dyna MK2 used a 50ohm resistor IIRC. So depending on the DCR of the C354 choke used in the MK3, it's probably close enough. And in those days people didn't worry that much about running tubes hot. Most good old American tubes could easily take it and replacements were cheap and plentiful.P.S. I see below that Mr. Lowmu has indicated the stock C354 is 55 ohms. So there you go, it's a perfect DCR for that circuit, they probably wound to that DCR for that reason. But yes, if you lower the DCR of a replacement choke, you have to be careful with too much B+. And the Dyna MK2&3 ran high anyway plus the line voltage in the early 1960s was more likely to be 115v. One solution is a Variac (expensive) or buck transformer (cheap) on the primary.
Edits: 03/11/15
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Follow Ups
- RE: My question was meant to be generic - gusser 11:07:57 03/11/15 (4)
- Thanks for the reply Gusser - 1973shovel 02:55:54 03/12/15 (3)
- RE: Thanks for the reply Gusser - gusser 11:08:29 03/12/15 (2)
- RE: "most amps will sound better when operating at higher B+" - 1973shovel 07:16:10 03/14/15 (1)
- RE: "most amps will sound better when operating at higher B+" - gusser 10:39:43 03/18/15 (0)
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