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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: Re: Gm for a good NOS 12SX7 posted by mark on April 25, 2002 at 16:26:17:
This tester measures 0-1,500Gm directly. There is a multiplier switch for x1, x2, x4, x10 x20. The roll chart specifies a minimum of 400 on the x4 multiplier, so that’s a minimum of 1600Gm.I have only tested 3 out of 20 so far but I am getting readings between 2,300 and 2,500Gm. The source was from Hong Kong and the seller said that they were all the same date code but they are a mixed bag (2 of one date code, 5 of another etc). I wonder if they are used?
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Follow Ups
- Re: Gm for a good NOS 12SX7 - Roy 22:43:56 04/25/02 (4)
- Re: Gm for a good NOS 12SX7 - Lew 06:20:51 04/26/02 (3)
- Re: Gm for a good NOS 12SX7 - Al Sekela 13:49:40 04/26/02 (2)
- Re: calibrating TV7D/U - Keith 09:47:10 04/28/02 (1)
- Re: calibrating TV7D/U - Al Sekela 20:39:39 04/28/02 (0)
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