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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: 7058 or 12AX7 posted by Laudanum on August 23, 2015 at 11:48:31:
According to the rca tube manual, the 7058 is for mobile use, with 13 v heaters. That would mean 12.6 would work fine. Also pin 9 is shown as IC or internally connected which may mean it could be connected to a shield. So, to use it instead of the ax7 would mean you need a 12.6v heater connected to pins 4 and 5 and pin 9 unused. I am not certain if the other parts of your circuit would need "fine tuning" but it would work if you did the pinout changes. regards, Dak
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Follow Ups
- RE: 7058 or 12AX7 - DAK 12:11:15 08/23/15 (5)
- RE: 7058 or 12AX7 - Laudanum 12:28:18 08/23/15 (4)
- RE:You can't always tell by looking. nt - DAK 12:51:01 08/23/15 (3)
- RE:You can't always tell by looking. nt - Laudanum 13:07:10 08/23/15 (2)
- Time to light it up...6V...then 7.5V for an instant...if too bright...back to 6.3V - Interstage Tranny 14:04:40 08/23/15 (1)
- RE: Time to light it up...6V...then 7.5V for an instant...if too bright...back to 6.3V - Laudanum 15:44:06 08/23/15 (0)
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