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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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SET Asylum Single Ended Triodes (SETs), the ultimate tube lovers dream. |
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In Reply to: Variac, does it save tubes or is it just another rumour? posted by astrostar59 on February 23, 2007 at 14:09:23:
In general, a variac is used to initially bring up an amp that hasn't been used for a long period of time. It helps to re-rorm the caps and prevents dammage if there are shorted caps. I suggest that when bringing an amp up with a variac you should use a solid state subsitute in place of the tube rectifier so the voltage will build up slowly. A tube rectifier won't start conducting untill at least 50% of the voltage is present. Also when using a ss rectifier, don't go over 80% of the ac voltage. After 80% for a few hours, put the tube back in and start at 80% and then continue in 10% increments with an hour between each untill you hit the desired voltage.For everyday use I wouldn't reccommend it unless you have a very old amp that cant take the modern 120V AC. In this case you would need a volt meter so you can set the correct voltage (say 110V) to run the amp.
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Follow Ups
- Re: Variac, does it save tubes or is it just another rumour? - truep 17:22:29 02/23/07 (0)
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