HDTenEightyP/NetNews huggingface dataset:
From: Richard Huff <huff@cs.cornell.EDU>
Newsgroups: rec.audio.high-end
Subject: FOR SALE:  cd player and power amp
Date: Mon, 23 Nov 1992 06:36:54 GMT
Organization: Cornell Univ. CS Dept, Ithaca NY 14853
Distribution: na
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

Denon 3520 CD player

o  20-bit DACs with 8x oversampling
o  Coaxial and Toslink digital outputs
o  Balanced XLR analog outputs
o  Fixed and variable RCA analog outputs
o  Headphone jack with volume control
o  Original list at $1500

Sell at $500 OBO


Adcom GFA-545 power amplifier

o  100 watts/channel RMS into 8 ohms
o  Modified by Pro Mod Service
o  Original list at $450 + $275 (mod)

Sell at $350 OBO


Richard Huff
huff@cs.cornell.edu
home: (607) 272-0506
From: michaelz@hongkong.WPI.EDU (Michael Curr Zarozinski)
Newsgroups: rec.audio.high-end
Subject: Problems with JVC CD Player
Date: 16 Nov 1992 21:11:51 GMT
Organization: Worcester Polytechnic Institute
Distribution: world
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


Hi all,

I have a JVC CD Player that is having a couple of strange problems.  The problems is that recently it has been sort of crackling now and then.  This is 
really evident when I put in a CD of George Winston.  During some of the quiet
passages a crackling sound is produced.  This happens in both channels.  I
opened it up to see if I could determine if anything seemed to be wrong but it
seemed to be working okay.  A couple of times it took a while for the CD player
to find the first track on the CD.  Does anyone out there have any clues.  


Please post your responses.  Thank you.
From: usenet@adobe.com (USENET NEWS)
Newsgroups: rec.audio.high-end
Subject: HELP: Cassette Deck won't record...
Date: Mon, 16 Nov 1992 20:38:48 GMT
Organization: Adobe Systems Incorporated
	(queueing-rmail) id 193348.17269; Mon, 16 Nov 1992 19:33:48 EST
NNTP-Posting-Host: 129.89.7.4
Originator: asanders@sparta
Originator: tjk@csd4.csd.uwm.edu

[How to fix your own stuff is part of the charter. -tjk]

This isn't a high-end equipment question, but I'm hoping some of
the "pros" out there may have an opinion on the problem I'm having
with my ten-year-old Yamaha cassette deck: it has quite suddenly
lost its ability to record. Nothing happens when the record switch 
is pushed (the Record light doesn't light, nothing is recorded on 
tape, and the meters do not register the input signal). The switches 
are solenoid controlled, and the contacts are permanent (so I'm told) 
pressure-type. The solenoid was lubricated (with a silicon product
made for electronics) about six months ago to relieve a sticking problem
that used to disable Play mode sometimes, and everything has been fine 
until this happened. Considering the age of the deck, even the $40-50 
a shop would charge to diagnose the problem may not be money well-spent 
(especially if the proposed cure is relatively expensive). If any of you 
hardware experts out there have an idea what the problem might be, and 
whether it's worth fixing, I'd really appreciate your advice. The unit 
was a fairly good in its day, I think. It has dbx noise reduction and 
a (supposedly) long-lasting "Sendust" head. Do I have an all-metal 
door stop on my hands?

Information very much appreciated.

Alan
asanders@adobe.com
From: Al.Conte@EBay.Sun.COM (Al Conte)
Newsgroups: rec.audio.high-end
Subject: Re: Martin Logan Sequel II
Date: 16 Nov 1992 17:11:27 GMT
Organization: Sun Microsystems, Inc.
Distribution: world
Reply-To: Al.Conte@EBay.Sun.COM
NNTP-Posting-Host: 129.89.7.4
Keywords: How to set them up
Content-Length: 338
Originator: tjk@csd4.csd.uwm.edu


Here's what works for me.

Center to center spacing =========== 7 ft.

Distance from rear wall to panel == 24 in.

Distance from side walls =========== 6 ft. min.   ( My room )

Toe in ============================ 1.5 inches

sitting position ================== dead level

NOTE : USE SPIKES TO DECOUPLE SPEAKER FROM FLOOR ! = A MUST
From: e538-27@iti.org (Lim Kian Hong Allan)
Newsgroups: rec.audio.high-end
Subject: FOR SALE: Pioneer A449 (A400 in UK)
Date: Wed, 18 Nov 1992 23:48:51 -0700
Organization: University Of Alberta, Edmonton Canada
Distribution: rec
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

I have a Pioneer integrated amplifier for sale. Its model number is A449. For 
those who read the Uk audio magazines should heard of this award winning 
amplifier.
    It is call A400 in Europe and for the past few years have already won a lot
of awards.

    It is 60W/ch, with 3 lines, 2 tape, pre-in-pre-out(you can connect it to 
an amplifier or a preamplifier), tone control, MC, MM, mute, head phone input
and loudness.

    One thing I like about this amplifier is that it has a direct button which Ican bypass everything (tone control and loudness). By doing that I can get a 
pure music out of my source.

    I want to sell it away because I am going to buy a separate component, ie.
power amp and preamp.

    It is about 1 year old but still in a very good condition. The price I am 
trying to sell it is C$300.00.

    So, if anyone is interested in buying this amplifier, please give me a call
or send me a mail. My phone number is (403)432-1957(This is in Alberta, Canada)
and my user id is e538-27@cad01.ucs.ualberta.ca

    Hope to hear from anyone of you.
From: weems@cs.umass.edu (CHIP WEEMS)
Newsgroups: rec.audio.high-end
Subject: Cats and speakers
Date: 19 Nov 92 19:54:00 GMT
Organization: University of Massachusetts CS Department
NNTP-Posting-Host: 129.89.7.4
News-Software: VAX/VMS VNEWS 1.41
Originator: tjk@csd4.csd.uwm.edu


I have found that packing tape, draped loosely over the grillecloth,
sticky-side out, is a good deterent. They put their paws up on it
to scratch, immediately detect the stickiness, and run away trailing
streamers of tape. One or two experiences like this have a permanent
training effect, and the tape can be removed from the speakers (and
the cat). Of course, it's annoying to have it there while you are
waiting for the cat to try it, but that's usually not too long.

Actually, I first did this with bumper stickers (like the kind that
radio stations give away). The next morning I awoke as one of our
cats walked across my chest with "ROCK 102 FM" emblazoned on his
side. What an amazing advertising concept, said my half-awake brain...

Chip
From: peterca@ento.csiro.au
Newsgroups: rec.audio.high-end
Subject: cats
Date: Thu, 19 Nov 92 10:37:05 EST
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

>>>Also on a related note, is there anything not acoustically worthless
>>>that, when used as a speaker grillecloth, is cat-proof? 
The Allison speakers use(d?) a molded fairly rigid plastic grill with many
tiny holes.  I can't hear any difference between the grill on or off.  Our
cats have never attempted to scratch it but have ruined several couches. 
Perhaps frustrated, our male cat just sprays through the grill onto the
woofer cone occasionally.  Why does the cat hate the woofer?  (I know
that's a terible pun)

----------------------------------------
Peter Campbell
C/O Div. Entomology, C.S.I.R.O.
Box 1700 Canberra A.C.T. 2601
Australia  (peterca@ento.csiro.au)
Ph.61-6-2464158 (w), 61-6-2516213 (h)
----------------------------------------
From: ereiss%ocf.Berkeley.EDU@ucbvax.Berkeley.EDU (Edward Reiss)
Newsgroups: rec.audio.high-end
Subject: Turntables for under $500
Date: 17 Nov 1992 00:31:45 GMT
Organization: U.C. Berkeley Open Computing Facility
Distribution: world
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


I'm currently looking at turntables under $500, (including tonearm). 
Among those that have been pitched to me (with quoted prices) are:

1) B&O Turntable ($470??-not positive about this price)
2) Rega Planar 2 ($460)
3) Revolver Rebel ($490 including inexpensive Grado cartridege).

Are there any other brands that I should look at?  Am I likely to find
better used turntables in the same price range available in the San 
Francisco Bay Area?  Finally, I am currently using an old Dual 1229,
(was the top of their old line).  Are any (or all) of the turntables 
in this price range a significant step up from the Dual?

Any replies by posting or email will be appreciated.

Ed Reiss
ereiss@ocf.berkeley.edu
From: bhoughto@sedona.intel.com (Blair P. Houghton)
Newsgroups: rec.audio.high-end
Subject: Re: dcc
Date: 17 Nov 1992 19:19:17 GMT
Organization: Intel Corp., Chandler, Arizona
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

Found the Magazine.

It's Stereo Review, November 1992.

And it's PASC (Precision Adaptive Subband Coding), not PCSA.

The magazine has a page on PASC technology, describing the
method of omitting low-amplitude sounds in the spectral
neighborhood of high-amplitude sounds, to scrimp on the
amount of data being encoded.

No mathematics, though, and the diagrams were a bit rough.

Before I enroll at ASU in order to get library privileges
so I can look this up, anyone know anything about documentation
of the theory of PASC, or is it a Dutch State Secret?

The question I hope to answer is whether DCC will be
tolerant at all of data defects,  CD has been successful in
reconstructing huge gaps in the medium.  Since PASC
encoding uses 1/4th the total digital information of CD,
I'd expect that CD's robustness has not been preserved.

The magazine also carried pictures and/or ads for Optimus
and Technics DCC decks.  The Optimus DCT-2000 is apparently
available at the your local RadioShyster.  The Philips and
Technics have bizarrely similar frontpanel configuratons;
I'd like to see comparison stats for the two.

And where the heck are the PORTABLES? :-)

				--Blair
				  "Beats me."

Appendix
--------

Some hard data on the Philips DCC900 (from a prototype
they gave to SR):

Box:
---
17x11x5.5", 20 lbs.(9kg), $799 MSRP. 

Motor:
---
Fast-wind time:		148 s.
Speed error:  analog:	-0.38%
	      digital:	negligible
Wow/Flutter:  analog:	0.11%
	      digital:  negligible


Digital Playback:
---
Freq. response:		+0.02, -0.04 dB; over 16Hz - 20kHz
Channel Sep.: @1kHz:	93.9 dB
	      @10kHz:	93.9 dB
S/N:        A-weighted:	99.3 dB
		not	93.6 dB
THD+N @1kHz:		0.003%
Linearity error @-90dB:	+3.7dB

Digital Record/Playback:
---
Freq. response:         +0.02, -0.06 dB; over 16Hz - 20kHz
Channel Sep.: @1kHz:	103.9 dB
	      @10kHz:	101.4 dB
S/N:        A-weighted:	91.5 dB
		not	87.2 dB
THD+N @1kHz:		0.003%
Linearity error @-90dB:	+10.3 dB

Analog Playback:
---
Freq. response:         +1.6, -0.2 dB; over 32Hz - 18kHz
Channel Sep.: @1kHz:	46.1 dB
	      @10kHz:	47.1 dB
S/N:        A-weighted:	57.1 dB
		not	53.1 dB
       Dolby B (no wt):	56.7 dB
       Dolby C (no wt):	62.5 dB
THD+N @1kHz:		0.64%

No specs given for analog recording.

The reviewer indicated that these analog specs are comparable
to "good but not spectacular" analog-only cassette decks, and
that the D/A linearity errors are high by CD standards but may
be ignorable due to the perceptual tricks performed by PASC.
From: "Sheldon  Stokes" <Sheldon__Stokes@qmgate.dfrf.nasa.gov>
Newsgroups: rec.audio.high-end
Subject: Effects of a new Digital Standard
Date: 13 Nov 1992 11:20:42 U
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

                       Subject:                               Time:7:46 AM
  OFFICE MEMO          Effects of a new Digital Standard      Date:11/13/92
Sorry I haven't written in so long, but I just bought a new car and have been
in shock for the last week.  

I have recieved many responses from the readers concerning my comment that when
you digitize something, you have to filter out information.  When digitizing a
signal, an anti-aliasing filter MUST be used.  The rub with digital, comes with
using digital masters.  As the standard improves, and I am confident that it
will improve (just look at the transition from the very established 78 RPM to
33 RPM records.  Established standards CAN change), the digital masters are
stuck with the standard that was in place when they were recorded.  Unlike a
digital master, an analog master has no set pre-established limits to its
resulution.  I have heard several digital "front ends" that have sounded very
good, but have not quite achieved the level that a top notch analog system has
achieved to my ears.    I listen to music for enjoyment and relaxation, so my
ears are my guide; my multi-meter is banished to the closet when the music
starts.  

Increasing the digital standard would improve the stereo reproduction field in
ways that I have not heard discussed before.  Increasing the number of bits
(word length) and sampling rates, would allow the designers of thier components
to not push the edge of the envelope so hard.  What I mean by that is a higher
digital standard would allow some design breathing room; much in the same way
that oversampling allowed more leaniancy in the way the high frequency
filtering was implimented.  This would allow designers to use cost cuttting
measures in thier budget components (consumer crap excluded, they always cut
corners), and those cost cutting measures might not be as sonically evident as
they are in todays line of budget digital components.  So not only would the
cost-no-option components benefit, but I think the improvement to the lower
ranks of digital components will be even more dramatic.  Any opinions on this? 
 

I am infatuated with old tube equipment.  I have or had some Dyna stuff (PAS,
FM3, SCA-35) over the years.  I have heard my SCA sound fairly good with some
minor modifiactions (wire etc.).  I would like to know of anybody who has had
good luck with old tube equipment.  If so how does it compare with new stuff. 
I need an amplifier for use with Eminent Technology LFT-VI loudspeakers, they
need a minimum of 100 watts (power hungry mothers).  

Good Listening,

Sheldon D. Stokes
sheldon_stokes@qmgate.dfrf.nasa.gov
(805) 942-9645
From: rons@tv.tv.tek.com (Ron Selberg)
Newsgroups: rec.audio.high-end
Subject: Vintage Tube Amps
Date: Wed, 18 Nov 1992 02:12:33 GMT
Organization: Tektronix TV Products
  (5.65c.tv/IDA-1.4.4 for <rec-audio-high-end@tektronix.tek.com>); Tue, 17 Nov 1992 18:11:48 -0800
Distribution: usa
NNTP-Posting-Host: 129.89.7.4
Originator: rons@soul.tv.tek.com
Originator: tjk@csd4.csd.uwm.edu

I have a pair of BOC (Bigg Of California) or George Gott, 50watt mono tube amps
that I am currently restoring/updating. Mid 60's vintage I believe.
12AX7, 12AU7, EL34, 5V4 tube compliment.
Anyone ever heard of these? Or have any experience with how they sounded in the
old days?
Email me if you like!



ron
From: x5840agn@maple.circa.ufl.edu
Newsgroups: rec.audio.high-end
Subject: mccormack amp
Date: 14 Nov 92 00:39:45 GMT
Organization: University of Florida - CIRCA
Reply-To: x5840agn@maple.circa.ufl.edu
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


does anyone own a McCormack DNA-I amp?

I would like to hear any information that owners have
on this amp, Please include specific's on your system.

thank you,

David
From: chowkwan@alumni.cco.caltech.edu (Raymond Maihin Chowkwanyun)
Newsgroups: rec.audio.high-end
Subject: Vinyl by mail
Date: Wed, 18 Nov 92 17:10:52 PST
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


I would appreciate anyone having had dealings with either
 
   1) Polyphony in Highland Park IL
or 2) Scarin in Yonkers NY

to report on the quality of the records and tapes sold by
these people and the service they received (prompt? courteous
- esp about exchanges/refunds).

On the positive side I can report that ClassiCo has excellent
records.  Some LP's looked in better condition than I've seen
brand new in stores.  2555 Huntington Dr., #A-198, San Marino,
CA 91108, USA.  Prices seemed reasonable to me too.   I got
a very decent Decca Figaro (3 records) for $15.

-- ray
From: brian@comp.vuw.ac.nz (Brian Boutel)
Newsgroups: rec.audio.high-end
Subject: CAL Delta CD Transport and its AT&T fibre options
Date: Mon, 16 Nov 1992 20:24:35 GMT
Organization: Dept. of Comp. Sci., Victoria Uni. of Wellington, New Zealand.
  (5.65cVUW/3.5 for rec-audio-high-end@uunet.uu.net); Tue, 17 Nov 1992 09:24:40 +1300
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


I've been listening to this machine and am considering purchase.  The
AT&T output is optional, but I'm interested in getting it, to match the
input on my Krell Stealth DAC.

CAL offer two AT&T versions, the ODL50 and the ODL50 Series Two.

Can anyone comment on the difference between these two, and advise me
on which to choose? Comments on the transport itself would be
appreciated, too.

Thanks,

--brian

-- 
Internet: brian@comp.vuw.ac.nz
Postal: Brian Boutel, Computer Science Dept, Victoria University of Wellington,
        PO Box 600, Wellington, New Zealand
Phone: +64 4 471-5328   Fax: +64 4 495-5232
From: etsang@skat.usc.edu (Eric Tsang)
Newsgroups: rec.audio.high-end
Subject: INFO WANTED:where to order sony DAT
Date: 13 Nov 1992 10:39:59 -0800
Organization: University of Southern California, Los Angeles, CA
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

Hi I am looking for Sony DTC Dat machines.
Anybody knows where I can mail order one of them.
Thanx in advance

Please reply to my email address
etsang@skat.usc.edu
From: romeo@niagara.Tymnet.COM (Michael Stimac)
Newsgroups: rec.audio.high-end
Subject: Re: ESL and ribbons
Date: 19 Nov 92 19:29:51 GMT
Organization: BT North America (Tymnet)
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


In article <1eg6tbINNsis@uwm.edu> CHONGHGP@SGPVM1.VNET.IBM.COM (Peter Chong) writes:
>
>What Andreas has described is a planar magnetic speaker. Magnepan
>designs have single ended magnets. Whilst designs from Eminent Technology
>have magnets on both sides.
>

I've been waiting for a good opportunity to mention a new speaker
I heard a few months ago.

What Peter says above WAS true until recently. Magnepan have
released a new model, the Model 20, which does use a double
magnet, one on each side of the speaker panel.

An advantage of this is that the magnetic field is more uniform,
and plane motion is more linear with large excursions. And, having
two magnets more-or-less doubles the flux density (???) and permits
the speaker to generate a higher sound level (I think this is the
correct way to phrase this, not really sure).

In producing the Model 20, Magnepan also developed/employed a
magnet material which is stronger in itself.

Finally, Magnepan lovers (who have lots of cash) can get full
bass response; the Model 20 is spec'd down only 3dB at 20 Hz.
This is nearly a full octave extension better than previous
Magnepans. 

I auditioned the Model 20s at The Audible Difference in Palo
Alto (CA). It was impressive, and Bela' Fleck really came across.

If you've got circa $8500 to spend on speakers, check these out!

Michael Stimac

-- 
Michael Stimac
(415) 355-8889
romeo@tymnet.com
These opinions are not necessarily anyone's but my own.
From: Richard d Pierce <DPierce@world.std.com>
Newsgroups: rec.audio.high-end
Subject: re: Antique Audio Equipment, an addendum
Date: Sat, 14 Nov 1992 10:03:56 -0500 (EST)
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Mime-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Originator: tjk@csd4.csd.uwm.edu


One other (actually, the major) point that I missed in my reply to Dieter
Kollers article extolling the virtues of old-time design is simple:

Engineers designed systems they way they did not because they wanted to,
but because they had no choices. Speaker efficiency had to be high to get
any acceptable levels from low-power amplifiers not because anybody though
that that was a good idea, but because they did not know how to design
higher power amplifiers. Speakers were made with witche's brew pulp cones
that had terrible internal damping, varied all over the place in
manufacturing, changed their characteristics with the slightest change in
temperature and (especially) humidity and age not because they knew it was
the best way to do it, but because they didn't know any better.

You may well be right in saying that it's difficult to design clean
high-power amplifiers these days. But in doing so you must also realize
that back then it was simply impossible. People didn't refrain from
designing high power amplifiers back then not because it was difficult or
not a good ide, but because they didn't know how.

Now there may be some comforting nostalgia in listening to these systems
(which, by the way, sound radically different then they did back then,
the equipment (especially loudspeakers) did not age gracefully for the
most part). And we can certainly say that some of these systems were the
very best in their day, and the people back then lived in a naive sense
that things were just great.

But the assertion that the loudspeaker engineers of the '50's and before
somehow knew more than we do today is most amusing, especially to those
same engineers (many of whom I know personally), is absurd.

|                Dick Pierce                |
|    Loudspeaker and Software Consulting    |
| 17 Sartelle Street   Pepperell, MA  01463 |
|       (508) 433-9183 (Voice and FAX)      |
From: cmermag@eng.umd.edu (Christopher Mermagen)
Newsgroups: rec.audio.high-end
Subject: Microphone Pre-amps
Date: Thu, 19 Nov 92 01:09:26 GMT
Organization: Project GLUE, University of Maryland, College Park
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

I am interested in building a two channel preamp for some 
condensor mics (I think b&k). I am in the initial phase, i.e.
just found out I  was going to build these for my brother who
is into recording. I was wondering two things:

1.) Anyone have experience with this at all

2.) Anyone have a list of suggested reading for this subject

Thanks again-
Sorry I cannot give you anymore  detail, but I have yet to find
out the specifics from my brother. I thought I would get a head
start, however. Thank you

Chris Mermagen
cmermag@wam.umd.edu
From: weems@cs.umass.edu (CHIP WEEMS)
Newsgroups: rec.audio.high-end
Subject: Re: Martin Logan Sequel II
Date: 17 Nov 92 22:17:00 GMT
Organization: University of Massachusetts CS Department
NNTP-Posting-Host: 129.89.7.4
News-Software: VAX/VMS VNEWS 1.41
Originator: tjk@csd4.csd.uwm.edu


In article <1e89hiINNjsi@uwm.edu>, bellutta@ohsu.EDU (Paolo Bellutta) writes...
>I'm having trouble in positioning my Martin Logan Sequel II.
>The room is kind of small (5.3 x 4.3 meters), so the bass range is
>not that great, but I can't do much about it (besides moving!).
>But I'm also having trouble with the mid-high range.

How is the room treated? It sounds like you're getting some strong
reflections. Do you have diffusive or absorptive materials at all
of the primary reflection points, including floor and ceiling?

Do you hear any sharp echoes if you walk around the room clapping
your hands (i.e. echo slap)? Can you guess at the decay time of
the echoes?

Chip