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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: Jim Hagerman's Octal Cornet--Can't Lose posted by Vint_age on March 5, 2007 at 08:56:04:
Indeed it is sensitive to tube rolling. Most other designers (ok, so far all of them) choose to minimize the impact of tube aging or rolling against any shift in EQ. I do just the opposite. I say bring it on.What I discovered was that the tricks used to de-sensitize tube variations also end up screwing with the sonics. The result is that the sonic flavoring of various tubes is retarded. Good tubes don't sound a whole lot better than lousy tubes.
The Cornet is designed to allow a tube's full sonic potential. You will hear distinctive changes when rolling tubes. The price to pay, however, is that you end up with +/-1dB variations in RIAA EQ. Older tubes will actually warm up the sound a little (rather than getting thin) with a slightly boosted bass and sloped down treble.
So take your pick. Super-accurate EQ, or fabulous tube rolling.
jh
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Follow Ups
- RIAA accuracy in Cornet - Jim Hagerman 11:42:27 03/05/07 (3)
- Re: RIAA accuracy in Cornet - Vint_age 13:59:04 03/05/07 (1)
- You're absolutely right - Jim Hagerman 11:10:34 03/06/07 (0)
- He's Right! - slowburn 13:44:46 03/05/07 (0)
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