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From: sch@dedalus.UUCP (Steve Holzworth)
Newsgroups: net.audio
Subject: Sony D5 (help!)
Message-ID: <705@dedalus.UUCP>
Date: Wed, 24-Apr-85 17:16:01 EST
Article-I.D.: dedalus.705
Posted: Wed Apr 24 17:16:01 1985
Date-Received: Sat, 27-Apr-85 04:24:06 EST
Organization: Wm. Daniel & Assoc., Cary, N.C.
Lines: 39


I recently purchased a Sony D5 (the CD Walkman) to use at work.  At present,
I listen to it with my Sony FM/AM Walkman headphones.  As expected, those
phones aren't quite up to the quality needed for CD use.  So... does
anyone have a recommendation for a set of headphones (with good bass response)
to use with my D5?

Just to throw my two cents in: my home system is composed of:

  Hafler DH110 preamp
  Hafler DH500 power amp (approx. 360 watts cont. per ch. into my 6 ohm load)
  Yamaha DX1 (?) CD
  Sherwood 7110B receiver (used as a tuner, from former system)
  Sony turntable (forgot what, direct drive)
  Sony cassette deck (also forgot what)
  Grace F9-E cartridge
  dbx 3Bx expansion unit (used for FM and poorly recorded albums)
  ESS AMT 1C speakers, driven through Powerline
  (nominal 6ohm load, rated at 400 watts cont. per)

Just to confuse the speaker debate:  ESS AMT speakers make use of Heil
air-motion transformers.  These are special drivers which work in principle
like a bellows, as opposed to a piston.  The theory (or hype) says that this
allows the AMT to accelerate the air more rapidly.  The analogy used is that
of squeezing (or squirting) a marble from between your fingers as opposed to
pushing the marble with said fingers.  Hype aside, I am rather fond of them.
In addition to the Heil (midrange to high 600-350000hz), the AMT's have a
(8 or 10 inch) active woofer in front, and a passive radiator in back.
Subjectively, the AMT's have good to execellent bass, excellent highs, but
could maybe use reinforcement in the midrange (is adequate).  A lot of 
people complained that Heil's are too hot, but I think you would find
that dealers usually have the brilliance control cranked wide open (shades
of Radio Shaft!).  Because the Heil drivers are pleated, they have
approximately a 20 sq cm effective surface area.  And yes, it's the same
Heil that gave us the FET (field-effect transistor).


					Steve Holzworth
					mcnc!ikonas!dedalus!sch