wrote in message
ups.com...
:
:
:
: wrote in message
:
ups.com...
:
: Dave Plowman (News) wrote:
: In article
,
: Trevor Wilson
wrote:
: The fact that the amp hums, suggests extreme
incompetence on the part
: of
: the constructor. It SHOULD be deathly silent.
:
: That occurred to me too. What's the reason - penny
pinching?
:
: --
: *He who dies with the most toys is, nonetheless, dead.
:
: Dave Plowman
London SW
: To e-mail, change noise into sound.
:
: The hum has been attributed to a PCB fault or damage.It
would probably
: be easy to fix but the builder has much better things to
do with his
: time than hunt around for the cause.I will have a tech
look into it
: later.
:
: The other chip amp [Sonic Art] is very quiet.
:
: It would be hard to imagine a less suited speaker to a
chip amp than
: TTs Equinox-with its many drivers,crossover complexity
and low
: impedence.Very many substantial SS amps would struggle
on these-as the
: smaller M.E.s did.That they still sound pretty good with
the buggered
: one is an indication of the potential of these things on
less demanding
: speakers.On such speakers their bass and treble is at
least up to very
: good SS amps of similar power,but as TT says,it is their
midrange which
: is special.I would add to that their image depth and
precision,their
: speed and their dynamics[both macro and micro].
:
: **I suggest you read TT's words again. He was impressed
with the power
: OP
: amp (except for the hum issues) on a value for money basis
(something
: I
: have never denied), but felt is was not as good as his
ME850. If you
: can
: manage to read something else into those words, then you
are engaging
: in
: some kind of supernatural practices. Of course, TT can
confirm or deny
:
: your assertion.
:
:
:
: Trevor I cannot agree that the midrange is most easy to
get right.If
: anything bass is most easy to get right.Any decent P.A.
amp can do
: reasonable bass.Even digital ones.
:
: **Points:
:
: * Your power OP amps did NOT get the bass right (see TT's
words).
: * I have consistently stated that switching amps SHOULD be
able to
: reproduce
: lower frequency information better and more efficiently
than any other
: amplifier type. It is high frequencies (and low
impedances) where
: switching
: amps run into problems.
: * We are not discussing "reasonable bass". We are
discussing high
: fidelity. IOW: Accurate (20Hz) bass.
: * An amplifier which cannot reproduce 20Hz - 20kHz with
absolute
: fidelity
: is not high fidelity. It is something else.
: * Midrange IS the easiest area to get right. Bass
frequencies are
: dominated by power supply and output device constraints
(along with VI
:
: limiting issues), whilst HF is dominated by output device
speed, VI
: limiting and stability/Zobel network constraints. With
your
: exceptional
: technical skills, perhaps you'd care to explain why you
think I am
: wrong.
: I'll wait.
: * With small (ie: Limited bandwidth) speakers, a smaller
amp can often
:
: sound better than a large amp. Small bass drivers often
perform better
:
: with a small, bandwidth restricted amp. Just like a
Gainclone, in
: fact.
: Such an effect can easily be compensated for, by using a
filter before
: a
: large power amp.
:
:
: --
: Trevor Wilson
: www.rageaudio.com.au
:

As I said Trevor, I don't want to get in the middle of an
argument here at all. I have merely passed on some casual
observations about an amp I have tried in relation to a
known product that you like and respect.

My reason for comment was to try and show there is some
middle ground here. The amp is probably not as bad as you
keep saying BUT at the same time it is not "the good one"
that JT is commenting on that I have not yet heard.

So IMHO after some limited testing it is not too bad but
certainly not as good as the ME. Again it makes it very
difficult to evaluate because it has a noisy power supply so
straight away I have a negative opinion. One of my pet
hates is 50Hz hum :-( This weekend I plan on having
another listening session before returning it to JT.

Cheers TT