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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: 6sn7 matching posted by sbrians on October 6, 2004 at 08:07:20:
Matching means many things to different people. In power tubes, matching should involve plate current curves (this requires expensive and hard to find testing gear). With small signal tubes like 6SN7s, people generally match for gm only. A matched tube could mean all four sections of a pair are matched, or section 1 of tube 1 is matched with section 1 of tube 2 and so on. Some people consider tubes of the same vintage and/or production plants "matched" pairs. Again, the term matching is open to interpretion. I wouldn't lose sleep over matching 6SN7s. IMO, it's not critical to match small signal tubes. Still ..... getting tubes of simliar gm values increases the chance these tubes are operating at roughly the same period in their lifespan, and matching vintage/production plants decreases the likelihood of mismatched sonics due to different materials or manufacturing processes used.
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Follow Ups
- Re: 6sn7 matching - Len_ 10:06:08 10/06/04 (1)
- Re: 6sn7 matching - sbrians 10:15:32 10/06/04 (0)
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