In Reply to: Another dimension: Complex music versus simple posted by BBeck on July 7, 2006 at 09:53:18:
...in the (lowly) heathkit aa-151 (PP, though, NOT SE):when I had it triode strapped, NFB cut, ultralinear disconnected, way high B+, the sound was stunningly gorgeous - just jaw dropping - on instrumentals (The Elected; guitar, pedal-steel with big chords, piano, drums, etc) - but when the vocals were added, the sound became rough, the vocals hard to understand.
when I went back to stock ultralinear with NFB, nice clear sound, vocals really clean, but the incredible "yumminess" GONE. (tears)
Went back to triode strapped, NFB cut, ultralinear disconnected, BUT dropped B+ AND reduced cathode current, and got a balance - fairly yummy, fairly clear, not the best of both, but still better than stock.
I need to get set up to do distortion measurements, so I can start correlating all of this.
I really appreciate Naz's specificity and both of your insight.
"It ain't a comeback until it's left the shop" Jimmy Dunne, the first man to drive a VW Beetle faster than 200 mph, and he has the forehead scar to prove it; I will always honor him for taking a chance on me when I wanted to be an engine mechanic.
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Follow Ups
- This is exactly what I observed with the triode mod.... - radiance 10:40:33 07/07/06 (0)