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From: wjm@whuxj.UUCP (MITCHELL)
Newsgroups: net.audio
Subject: Re: NX 40 ...
Message-ID: <65@whuxj.UUCP>
Date: Fri, 13-Jan-84 09:58:05 EST
Article-I.D.: whuxj.65
Posted: Fri Jan 13 09:58:05 1984
Date-Received: Sat, 14-Jan-84 03:31:52 EST
Organization: Bell Labs, Whippany, N.J.
Lines: 20

I'm interested to hear about Suk Lee's problems with the NX 40 and dbx in
general.  For those of you who have had noise problems with the NX 40, I'd
recommend the 224 which is about 50% more expensive, but QUIET (mine has
negligible hiss and no audible hum).  As for the comments about dbx pumping
frankly I think dbx is getting a bad rap there.  I've experienced no pumping
with either piano music or HARP music, which is probably worse from a
transient point of view.  Most other users of dbx have not experienced these
effects either, from what I've heard here on net.audio or in the hi-fi mags.
Sure, Dolby C won't have this alleged problem, but it will introduce problems
of its own, if the frequency response of the tape deck is slightly inaccurate,
C will exacerbate the problem.  I've heard that a 1.5 dB error, will translate
into a 4+ dB error through the Dolby C process.  Also, keep in mind that dbx
gives you 50 dB of noise reduction, while Dolby C only gives you 20 dB.
Don't get me wrong, I'm not saying Dolby C is bad, just that dbx is better
and that Mr. Lee is giving it a bad rap.
(Naturally, these are my personal opinions and not those of my employer,
the Central Services Organization.)
Bill Mitchell
CSO
Whippany, NJ  (whuxj!wjm)