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From: mat@hou4b.UUCP
Newsgroups: net.audio
Subject: Re: Phil R.'s system, part3
Message-ID: <1130@hou4b.UUCP>
Date: Sat, 1-Sep-84 02:18:58 EDT
Article-I.D.: hou4b.1130
Posted: Sat Sep  1 02:18:58 1984
Date-Received: Mon, 3-Sep-84 08:20:10 EDT
References: <1010@drutx.UUCP>
Organization: AT&T Information Systems Laboratories, Holmdel, NJ
Lines: 36

Phil, I congratulate you on your location.  In such an environment,  very
subtle differences may well be apparent, and hearing strain due to high
volumes should be non-existant.  But I do have some lingering doubts ...

First, about your room.  I have heard golden-ear folk suggest that in the
serious listening room, no two surfaces (walls, floor, ceiling) should
be parallel.  I've heard of ceilings having sound-absorbing vault-arches
installed under them to suppress the resonances that could occur between
ceiling and floor.

I've also heard it suggested that the area around the speakers should be
acousticaly dead.  Your lack of furniture would seem to make it more live,
not less.  (Obviously, if you use Bose or Klipsch speakers this can't be
true -- but I'm sure Phil wouldn't be cought dead within half-a-mile of any
of these.)

And what about the folding door and the sliding (glass??) door.  Doesn't
glass do sumit' awful when large panes of it (especially plate glass or
safety glass) are reflecting sound?

And the Litz wire.  I admire your dedication, and an effective cross-section
of #11 sounds great.  But isn't Litz wire a bit of overkill?  Let's say that
the highest frequency is 25 kHz -- no, make it 30 kHz.  Allow an order of
magnitude, so make it 300 kHz.  Is skin effect important at this frequency?
I hardly think so.  On the other hand, the wire that you have constructed
probably has some of the soundest connections in the world, and I have long
wondered about non-linear conduction through oxide films.

Anyhow, I'm waiting to hear what Phil has to say about the Revox CD player.
I assume he is looking forward to hearing if Willi Studer had turned the
ugly duckling into a swan.
-- 

	from Mole End			Mark Terribile
		(scrape .. dig )	hou5d!mat
    ,..      .,,       ,,,   ..,***_*.  (soon hou4b!mat)