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Post by guitarstan on Jun 5, 2009 11:09:59 GMT -7
Can anyone tell me if these tube specs are close enough to be considered a matched quad? Thanks!
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Post by hdahs143 on Jun 5, 2009 21:31:08 GMT -7
Oh yeah. They're all within 1 ma, and the TC numbers are very close. That's a very nice match.
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Post by bustertheboy on Jun 6, 2009 1:44:18 GMT -7
I'd be more than happy with those- a NOS 6V6 pair I bought as matched were 32mA and 23mA in the Z28- a compromise for 28mA! Brett
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Post by myles on Jun 8, 2009 10:41:51 GMT -7
10% difference on plate current is a very good match and 20% is condidered an industrial match. Great matching is typically 5% or less but +/- 3mA on a 6L6 in a typical Fender black face amp as an example is just fine and dandy.
Unfortunately, these are static numbers and do not show what the tube does over the entire operating range. In most cases if the tube is matched at one place it will typically perform well over all ranges UNLESS there is a defect which can only be seen on a curve tracer.
Over 20% difference you will loose sustain and articulation and the background hum will increase and be more noticible.
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Post by guitarstan on Jun 11, 2009 10:45:42 GMT -7
Great replys! Thanks for the response guys .
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