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Wayne's BA 2018 linestage
Wayne's BA 2018 linestage
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Old 19th February 2019, 02:07 AM   #281
Adams_Leo is offline Adams_Leo  China
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anyone can help to what is output impdence of this preamp? Does is lower enough and can driver the Nelson‘s 50w Single-Ended BAF2015 of 2SK77 version?
thanks
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Old 19th February 2019, 03:19 AM   #282
wayne is offline wayne  United States
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Wayne's BA 2018 linestage
The output impedance is a fraction of an Ohm and will drive it fine.
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Old 19th February 2019, 04:12 AM   #283
Adams_Leo is offline Adams_Leo  China
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thanks wayne quick reply
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Old 20th February 2019, 05:58 PM   #284
rookakoma is offline rookakoma  Hungary
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I Would like to lower the gain. 2x would be enough
Is it OK, when I change R17 value to 27k?
I would like to keep the R16, because of I don't want to change the C1.
(I don't have other values in my drawers.)
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Old 20th February 2019, 09:37 PM   #285
wayne is offline wayne  United States
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I havenít tested it with a gain that low. It may work and I can try it when later this week.
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Old 21st February 2019, 07:51 AM   #286
rookakoma is offline rookakoma  Hungary
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Thanks Wayne
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Old 21st February 2019, 10:18 PM   #287
wayne is offline wayne  United States
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Wayne's BA 2018 linestage
Looks like it is just fine to make both feedback resistors 27K to lower the gain to 2X.
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Old 22nd February 2019, 07:13 AM   #288
rookakoma is offline rookakoma  Hungary
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That's good. Thank You.
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Old 22nd February 2019, 10:49 AM   #289
wdecho is offline wdecho  United States
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Quote:
Originally Posted by wayne View Post
Looks like it is just fine to make both feedback resistors 27K to lower the gain to 2X.
I want to thank you too. Having big horn speakers it benefits me having less gain.
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Old 26th February 2019, 12:05 AM   #290
Mod Man is offline Mod Man  United States
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Received the GlassWare audio bipolar supply today and they did a fantastic kitting job. All parts individually bagged and labeled.
6L6, looking at your post 235 I think you chose the 1 ohm resistor for R3 in the CRC filter. Is was thinking of using the3.3 or maybe the 10 ohm resistor because the total current is something like 60 mA. Any thoughts?
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