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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Just purchased a Variac. Did I get the right one? posted by Jon L on January 13, 2001 at 06:50:08:
Every VAC Renaissance 30/30 manufactured since the spring of 1995 contains a circuit called the 300B Sentry. One of the functions of this circuit is to delay the application of high voltage for 45 seconds, ensuring that the 300B and 6SN7 heaters are fully on first.A 300B heater warms up in approximately two seconds.
Over the seven years of Renaissance production, we have seen many versions of the 300B, and are familiar with the failure tendencies of most of them. We've never seen a set of Sovteks last more than a month or two; this is not typical, and appears to be a function of the construction of that version.
If your amplifier does not have the 300B Sentry, please contact the factory for an update. If it does, your variac may produce erratic results.
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Follow Ups
- Re: Just purchased a Variac. Did I get the right one? - Kevin Hayes 01/14/0108:22:58 01/14/01 (1)
- Thanks for info, but couple more questions. - Jon L 20:24:46 01/14/01 (0)
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