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RE: 6SL7 Ratings

T

> > I agree that all else a higher f3 would be nice to have, but at the same I do not suggest anyone looses sleep, there are bigger fish to fry first.

To me HF extension and non-resonance is
a top priority because of my sensitivity.
So to me there is no bigger fish to fry.
But that is just me I guess.

My ideal speaker is the ribbon but
I have yet to hear a speaker using
one that integrates it well with the
other drivers used in the speaker.

So after many trials I found a tweeter
that had the best highs I could afford.
The winner was the Dynaudio D-260
which I linked to the spec sheet below.
I have no idea as to the phase deviation
at 20KHz from this tweeter so
I didn't have a response to your query.
I don't know anyone who has measured
the acoustical phase response of
any speaker out there.
Electrical phase but not acoustical phase.

A cap is the ONLY part of my crossover
because I have found that inductors
and resistors rob too much music
when used in a driver crossover.
So phase deviation in my speaker
is minimal or as minimal as posible.
The cap is a 4uFd GE Mtr Run bypassed
with a .1uFd Vit Q for a crossover @~5KHz.
The midbass are Audax Aerogel drivers
again very damped from resonances.

DanL




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