"WorldJAZZ" wrote in message ...
"A. D'A." wrote in message
om...

Anyone who has input from any perspective on the subject of digital
amps I would appreciate it.

Thanks

I have heard the Carver Sunfire, and found the sound quality to be poor
compared to good amplifiers I have known. The sound was muddy and
unrevealing.

In order to filter out the switching frequency, a large inductance is used
at the output of a digital amp. This means that in the treble range, digital
amps have extremely low damping factors,

And if you knew what "damping" was, you'd understand that this statement
basically is nonsensical.

In order for there to be any "damping factor" issues, there has to be
something to damp that mainfests itself in the electrical domain, i.e.,
it has to show up in the impedance curve as a resonant peak. Second,
the electrical LOSSES (not IMPEDANCE, resistive LOSSES) that form the
effective series electrical loop with the tweeter HAVE to dominate all
other losses.

In point of fact, your conjecture fails on several fronts: first, in the
vast majority of tweeters, bay far the most dominant loss mechanism is
mechanical, either through suspensions losses or deliberately through
fluid viscous losses. This is precisely why the mechanical Q, Qms, of
most tweeters is equal to or less than the electrical Q, Qes.

Second, the ONLY place where the amplifier can play ANY role in
"damping" is at any resonance where there is a manifestation in the
electrical domain. If their isn't, then the amplifier can play NO
role in damping that resonance. For the vast majority of tweeters,
again, this is only at the fundamental mechanical resonance, where
in most cases, a) the damping is already dominated by mechanical
losses and changes in electrical losses are insignificant and
b) the resonance is deliberately place BELOW the crossover frequency
and thus damping it more or less is not likely to have the effects
you claim.

Third, unless it can be shown that the first to issues above are not
limiting the veracity of your conjecture, you still have to deal with
the fact that unless the effective series loop resistance is proximal
to the simple DC resistance of the voice coil, then "damping factor"
issues have no effect.

And this comes down, ultimately, to the farsical use of a nonsense
term as "damping factor" as a useful figure of merit for amplifier
performance, as have been adequately demonstrated in the past.

The amplifier in question may or may not have the audible
characteristics you claim, but it is not due your unsupportable
"damping factor" conjecture.