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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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Vintage Asylum Classic gear from yesteryear; vintage audio standing the test of time. |
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In Reply to: Re: Knight ka-25 posted by Ron Oehlert on March 2, 2007 at 16:46:35:
Yes, thank you. The problem is it is a kit that back in the day some guy slapped together with poor soldering skills and I think my problems are due to mistakes made when built. I have already found 3 mistakes. Some of the parts in the power supply may not be the right values etc. Plus this thing has a strange circuit with all the output cathodes tied together and connected in series with the 12ax7 filaments and all the screens tied together too. My main problem is I am measuring about 90 ma screen current for the 4 6bm8's, too much. I have more screen current than plate current! Plus the 400 ohm 10 watt resistor in the power supply is dissapating like 9 watts, too much total current in power supply. Anyway, thanks.
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Follow Ups
- Re: Knight ka-25 - BillyJack 17:04:53 03/02/07 (5)
- Re: Knight ka-25 - Tom Bavis 06:58:04 03/03/07 (2)
- Re: Knight ka-25 Optical illusion above - Al Nico 06:17:53 03/04/07 (1)
- Re: Knight ka-25 Optical illusion above - Ron Oehlert 13:06:42 03/04/07 (0)
- Re: Knight ka-25 - corerosin 04:13:59 03/03/07 (0)
- Re: Knight ka-25 - Ron Oehlert 17:39:19 03/02/07 (0)
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