HDTenEightyP/NetNews huggingface dataset:
From: rhoades@ll.mit.edu (Captain Chaos)
Newsgroups: rec.audio
Subject: Re: Dolby B/C dubbing on Dual Decks
Date: 5 Nov 92 22:46:18 GMT
Organization: MIT Lincoln Laboratory

I'm finding this discussion interesting but confusing.  What's not clear to
me is how you are _supposed_ to make copies if you have two decks, each of
which can be set to Dolby B, C, or none and you want to copy a B-encoded
tape.  By _supposed_ to I mean how the system was intended to be used to
avoid double-encoding (if that's possible), mismatched encoding (with B &
C), or improper decoding (C from B, none from B, etc).

Andrew
rhoades@ll.mit.edu
From: n8842401@henson.cc.wwu.edu (Matthew Stearns)
Newsgroups: rec.audio
Subject: Looking for cordless *special* headphones
Date: 8 Nov 92 02:36:47 GMT
Article-I.D.: henson.1992Nov8.023647.28938
Organization: Western Washington University

Hi all...
I'm looking to buy a pair of cordless headphones, but 
the only ones I can find are "infared" carriers.  I'd
like to find a pair which carries the info across radio
waves (like FM) but I haven't been able to find anything
like this excepting professional broadcast intercoms in
the form of headsets (usually accompanied by mics...)
Does anyone make something for the consumer market like 
what I'm looking for?  Ideally, the headphones would be
stereo, and have a range of at least 50 meters.  I'd
also like them to be able to go through walls (like a 
cordless telephone) with little or no breakup in signal.

Either consumer or professional market, does anyone know 
where I can find these phones?
Thanks, Matthew
From: eddie@cstr.ed.ac.uk (Eddie Rooney)
Newsgroups: rec.audio
Subject: Timer recording on cassette decks
Date: 9 Nov 92 13:27:19 GMT
Organization: Centre for Speech Technology Research, Edinburgh University

I've recently bought a tuner with a built in timer, to record on to cassette.
You set the programme, set the cassette deck to record, and then the timer
switches the cassette player on and off you go.  My question is - should I let
the timer switch the cassette player off again at the end of the recording, or
should I let the cassette run on until the auto-stop function closes it down?
Is it bad for the deck or the tapes to simply shut the power off during
recording, or does it make no difference?  Any advice appreciated.

=========================================================================

Edmund Rooney					email:eddie@cstr.ed.ac.uk

Centre for Speech Technology Research
University of Edinburgh
80, South Bridge,
Edinburgh EH1 1HN
Scotland

=========================================================================
Newsgroups: rec.audio
From: hquiniou@bnr.ca (Henri Quiniou)
Subject: HEADphone AMPLIFIERS
Reply-To: hquiniou@bnr.ca (Henri Quiniou)
Organization: Bell-Northern Research Ltd.
Date: Thu, 5 Nov 1992 17:30:11 GMT


   Has anyone compared or simply listened to those 3 headphone amps:

          . Grado,
          . Melos,
          . Krell KSA5.

None of those company dealers here in Montreal keep those components in stock: they're only ghosts to me. Need help.

PS: Post any reply, I don't have mail!!
Thanks,

Henri Quiniou




Organization: Graduate School of Industrial Administr., Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.audio
Date: Fri, 13 Nov 1992 14:09:52 -0500 
From: "Jeremy G. Mereness" <zonker+@CMU.EDU>
Subject: INFO WANTED: Tascam 103 Tape Deck


Could someone mail me any info/recommendations they might have about the
Tascam 103 3-Head Cassette Deck?

This is one of their "low-end/professional" models; you can get it for
around $400 from stores that feature Tascam products. 

Comparable 3-head decks, like Nakamichi, list for $600+. I need to buy a
good deck for my studio, but don't have the cash to shell out more than
$500. The Tascam seems the way to go. 

Specifically, I am looking for a mechanically durable deck, relatively good
recording specs, and that doesn't tend to lose or gain tape speed over time.

any comments? experiences?

Thanks in Advance!

 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|Jeremy Mereness                 | Support    | Ye Olde Disclaimer:     |
|zonker+@cmu.edu (internet)      |  Free      | This message represents |
| or jm7e+@andrew.cmu.edu        |  Software  | my opinions, alone.     |
| or zonker@drycas.bitnet        |------------|  Ya Gotta Love It.      |
| B.S. Mech Eng. CMU,1992-Certificate Mixology,1992-'83 Yamaha 650 Twin |
 -----------------------------------------------------------------------
              This year marks 200 years of the Bill Of Rights. 
Newsgroups: rec.audio
From: nau@ssesco.com (William Nau)
Subject: Re: Pre-amplifiers
Organization: SSESCO
Date: Wed, 11 Nov 1992 16:40:36 GMT

In article <1992Nov11.135841.16154@porthos.cc.bellcore.com>, gfl@hera.cc.bellcore.com (lenahan,grant f) writes:
|> > (Greg Sanguinetti) writes:
|> >> (William Nau) writes:
|> > >
|> > >I've also seen passive preamps that go for $60 (didn't have any kind of
|> > >input switching).  It had a buffered input and level control (up to line
|> > 
|> > How does a passive preamp have a buffered input stage? Is my connotation
|> > of the term "buffered" too narrow?
|> > I consider passive and buffered to be mutually exclusive terms.
|> 
|> They are.  And for $60 you can't get a decent potentiometer (retail)
|> let alone a good buffer / power supply.  This defeats the purpose
|> of sonic purity.

I admit my knowledge of passive preamps is limited, but th $60 unit that
I was talking about, I remember reading about it in Stereophile.  It was
well liked by them.  I was hoping that that would be a reasonable
recommendation.

I also do not understand buffering (audio), but thought that one of the
reasons a passive preamp is inexpensive was because no power supply was
needed.

|> > BTW watch out for impedance missmatches using a passive preamp. Their output
|> > impedance can be quite high, and variable with pot settings.
|> 
|> And, more importantly, you have a trade off (in POT resistance) between
|> a low input impedance (bad) and a high output impedance (also bad).
|> With passives, you can't have it both ways.

I was not attempting to say that he should get a passive preamp, simply
that it is yet another alternative to using the variable out on his
CD player as a preamp.

Note: I do understand that you were simply trying to provide additional
      information.  I just wanted to clear up my position.
-- 
William R. Nau
Supercomputer Systems Engineering and Services Company (SSESCO)
511 11th Avenue South, Suite 216
Minneapolis, Minnesota 55415-1536
(612) 342-0003

nau@SSESCO.com
Xref: sparky rec.audio:14847 rec.audio.pro:2256 comp.sys.ibm.pc.soundcard:3609 comp.multimedia:3320
From: georgen@gpu.utcs.utoronto.ca (G. Ng)
Newsgroups: rec.audio,rec.audio.pro,comp.sys.ibm.pc.soundcard,comp.multimedia
Subject: Re: Interface Digital Audio <---> Computer ???
Date: 10 Nov 92 13:51:06 GMT
Organization: UTCS Public Access

In article <1dncloINNs68@calvin.usc.edu> alves@calvin.usc.edu (William Alves) writes:
>In article <BxGxwv.8po@gpu.utcs.utoronto.ca> georgen@gpu.utcs.utoronto.ca (G. Ng) writes:
>>In article <1992Nov9.144423.7532@rhrk.uni-kl.de> luitz@rhrk.uni-kl.de (Steffen Luitz [RHRK]) writes:
>>>what about an interface digital audio (DAT, CD optical or coax) to 
>>>a computer system (perhaps SCSI or a PC-board  or ...) ?
>
>>On the Next, there are interface boxes ($1000+) to hook up the digital
>>outputs of CD players directly to the Next's DSP port.
>
>Actually, Stealth Technologies makes an interface that connects S/PDIF
>and AES/EBU standard digital I/O to the DSP port for $395. It is usually

Sorry, I stand corrected.  I was looking through Next's Winter 92
Software/Periphs. catalogue, and the lowest priced digital audio i/o device
was Steath's ada1800 at $995.  Guess I'd better get a new catalogue...

>used for just what you describe. Subscribe to the NeXT Music mailing
>list for more info: nextmusic-request@wri.com to subscribe, nextmusic@
>wri.com to post.

Thanks for the info.
gn
Newsgroups: rec.audio
From: mark@spike.b8.ingr.com (Mark Lanier)
Subject: Infinity Reference Speakers
Keywords: Comparison Shopping
Organization: Intergraph
Date: Fri, 6 Nov 1992 15:00:27 GMT

I just received (by mail, maybe a bad thing to do) my long awaited stereo. 
Nothing fancy, not close to being audiophile or any such thing ,but not to bad
considering the amount of $$. Anyway, I got a JVC 707 receiver and a pair of
Infinity Reference Four speakers. This combo sounds good, the highs are clear,
bass isn't boomy, don't know about imaging yet. The only complaint, well its
probably me being to cost consious is that on really loud (3/4 volume) playing
something with alot of bass (Madonna's Vogue) the speakers seem to want to
bottomout.  Of course I have checked the eq to make sure the bass isn't
overdriven, the loudness switch was on however. I would like to know if anybody
has experience with Infinity Reference Five. They are about $200 more, but at
this point I may be better off upgrading now, or forever living with regret??
I purchased these from Crucherfield by the way, so any comment on their speakers
for around $700 would be appreciated. Also these are acoustic suspension design. 

Any help is mucho appreciated.

Thanks,

Mark Lanier    mark@spike.b8.ingr.com

Newsgroups: rec.audio
From: bbs-firefly@jwt.UUCP (John Dooley)
Subject: Re: Do any CD players have this feature?
Reply-To: bbs-firefly@jwt.UUCP
Organization: The Matrix
Date: Tue, 10 Nov 1992 20:55:41 GMT

Paige K. Parsons <parsons@cambridge.apple.com> writes:

> Do you know of any players that have:
> Custom track memory + random playing of custom track memory.

I have seen a few Pioneer CD players that have what you're talking about. 
They allow you to selectively delete certain tracks, and then play 
randomly from the ones left.  However, I've only seen this with the CD 
changers.  I don't know if the single disc players have the same feature. 
Pioneer CD changers with this feature are the PD-M501, PD-M601, PD-M701, 
and the PD-M801.  I'm not sure whether or not the PD-S501 (1 disc) or the 
PD-TM2 (18 disc changer) has it.  The feature is called Random Play with 
Delete on Pioneers.  Hope this helps.
From: durway@mpd.tandem.com (Lindsey Durway)
Newsgroups: rec.audio
Subject: CD skipping?!?
Date: 12 Nov 92 22:13:41 GMT
Organization: Tandem Computers, Inc.

My Sony CDP-500 CD changer skips consistently on two tracks:
one particular track on a friend's Bob Marley CD, and one
particular track on a Bruce Hornsby CD.  The skips always occur
at the same spots.  What's the deal?  Is this one of those
problems I can cure by marking the edge of the CD?  By cleaning
the lens?  By paying an expert thousands of dollars and
wiring my head to a Cray Y-MP?  Any tips would be appreciated.

Thanks,
Lindsey

-- 
Lindsey Durway, a guy.  durway@mpd.tandem.com
I'm not deaf--I'm ignoring you.
Newsgroups: rec.audio
From: GERRY_KENDAL@ACT.EDUC.UALBERTA.CA (Gerry Kendal)
Subject: Re: Programmable CD players
Followup-To: rec.audio
Organization: University of Alberta, Canada
Distribution: usa
Date: Thu, 5 Nov 1992 17:29:00 GMT

In article <1992Nov4.213746.2170@zia.aoc.nrao.edu>, awkerr@zia.aoc.nrao.edu
(Alan Kerr) wrote:
> 
 
> Question that I've been wondering about:
> 
> Most CD players that I've used would *always* glitch between two
> sequencial tracks if you programmed them in.  I know the glitch is
> from the machine doing a 'seek' and quickly reseting itself.  This is
> usually not a problem, but I'm starting to get a good number of 'live'
> CDs or CDs that have songs that segue into the next track.
> 
> so if I program a CD player to play:
> 
> track 4
> track 5
> 
> Who makes a CD player (preferably a multi disk player) that will NOT
> produce a 'seek glitch' between these two tracks?
> 
> Thanks in advance.
> 
> Alan
> 

I've been using a Magnavox CDB586 (6 pack multi) that does what you're
looking for with never a backwards look.  Have had no problems at all with
it actually.
From: wwein@scott.skidmore.edu (warren wein)
Newsgroups: rec.audio
Subject: Re: good indoor FM antenna ?
Date: 13 Nov 92 00:14:38 GMT
Distribution: usa
Organization: Skidmore College, Saratoga Springs NY
X-Newsreader: TIN [version 1.1 PL6]


	I have a Parsec antenna (I forget the model number).  It is
excellent at pulling in those elusive stations.  It is about 9 inches
high and 2 inches wide though.

							- Warren
wwein@skidmore.edu

-- 
------------------------------------------------------------------------------
"In no sense?  Nonsense." AON

"Female Cathons pick their mates by the size of their balls" -TN
Newsgroups: rec.audio
From: bill@bilver.uucp (Bill Vermillion)
Subject: Re: Why filter D/A output?
Organization: W. J. Vermillion - Winter Park, FL
Date: Mon, 9 Nov 1992 15:41:02 GMT

In article <1992Nov8.222911.27702@doug.cae.wisc.edu> loj@cae.wisc.edu (Lo Jeffrey) writes:
>I was wondering if someone out there could answer a question about filtering
>the output of a D/A converter.  Analog filtering, that is.  Why do it?
>If you can't hear anything above 20KHz anyway, why bother going through
>all the trouble of getting rid of the noise up there?  Maybe that's
>cutting it a little close.  But most of the D/A converters made today
>have 8X oversampling or more which puts the noise up around 160KHz.
>Even if you could hear this, I doubt that your equipment could reproduce
>it.  What am I missing here?

One thing that you are missing is that many of today's power amps are
flat past 100KHz - and will have output past that.

You may not be able to hear it, but putting a 100 or so watts at 160KHz
into your tweeter could make for a very nasty smell, followed by a
significant dulling of the high end response - eg no tweeter!

I had a pair of amps a couple of years ago that had sub-sonic and
infra-sonic signal detection.

If frequencies below a few cps (probably in the 5 - 10 Hz range) or
signals above 50 KHz were detected, relays opened that killed the
output to the speakers.

These amps were rated at 200 wpc.  Since they had to match the FTC
ratings and they were did not have fan cooling but BIG heat sinks, one
of these was tested on the bench at 640 watts per channel when it was
cold.

Glad I had the protection.    I did kick in once or twice.  But both
times were when I accidental dropped the tone arm onto the record.
Looked subsonic to the amps!


-- 
Bill Vermillion - bill@bilver.oau.org  bill.vermillion@oau.org
                - bill@bilver.uucp 
                - ..!{peora|tous|tarpit}!bilver!bill

Newsgroups: rec.audio
From: gre253@mis.csiro.au (Steven Green (+61 6 276 6813))
Subject: Any recommedations for outside speakers ?
Organization: CSIRO ITS
Date: Thu, 12 Nov 92 02:18:55 GMT

Summer is almost upon us here in Oz. And summer means barbeques, beer and
lazing about outside under a shady tree. Add "listening to music" and the
picture would be perfect!

Our house is L shaped and together with several brick walls makes a nice
courtyard. Couple of silver birch trees, BBQ, outdoor furniture...

I'm after some speakers that I can "hang" under the eaves of the house.
The eaves are over a metre wide ( 3 feet ). So theyre not in too much danger
of getting saturated when it rains. Still I'd prefer speakers that could
"stand the elements".

I'm not _too_ fussed about sound quality, just hearing the music would be nice.
Currently the only way to hear music out in the courtyard is to open the 
living room windows wide and crank up the volume to an ear-splitting level! Not
the best solution.

Also I dont want to spend a fortune on them. AUS$500 for a pair is about my
limit! ( < US$350 )

Thanks in advance.
-- 
* Steve Green     *  "Hey Rocky, watch me pull a rabbit outa my hat!"    *
* Comms Group     *  "That trick never works"                            *
* ITS Branch      *  "Nothin' up my sleeve - PRESTO"                     *
* CSIRO Australia *  "No doubt about it - I gotta get another hat"       *
Newsgroups: rec.audio
From: stud1b53@bnr.ca (Anshu Prasad)
Subject: Re: Does anyone know why JVC MX90 bookshelf stereo system is discontinued?
Reply-To: stud1b53@bnr.ca
Organization: Bell-Northern Research Ltd.
Date: Wed, 11 Nov 92 19:39:47 GMT

In article <BxK88G.685@acsu.buffalo.edu>, v999r36x@ubvmsb.cc.buffalo.edu (Yao Sen Ko) writes:
|> Hi,
|> 
|> The subject line says it all.

  And then some. :-)

|> Does anyone know why the JVC MX90 bookshelf
|> stereo system is discontinued? That model is the only bookshelf system with 
|> Dolby Surround I can find so far.
|> 

  I picked up a JVC 92/93 Catalogue and they show the MX-90 as still
a part of their line (at least until the fall of next year, I guess). 
As for other bookshelf systems with Dolby Surround, I've seen two
Technics systems (sorry, don't remeber model numbers off hand) that
carried the Dolby Surround logo.  I don't know anything about how good
these units are, though... I suspect not very.

-- 
   __ ___  
  /\ \ \ \  Anshu Prasad                        stud1b53@bnr.ca
 /--\ \/_/  Ottawa, Ontario, CANADA
/_/  \_\    All opinions are my own, not my employer's, BNR Ltd

Newsgroups: rec.audio
From: kjt001@dunix.drake.edu (Devil Bunny!)
Subject: How 'bout a new group for the rest of us?
Organization: Drake University, Des Moines, Iowa, USA
Date: Wed, 11 Nov 1992 02:04:15 GMT

How about making a new group called something like
rec.audio.college.student or rec.audio.penniless.  Almost every
conversation that occurs here is pointed to those who have $10k to spend
on audio equipment.  It would be nice to know that maybe somewhere out
there are other people with as little money as I.  <sigh>


-- 
___________________________________________________________________________
|                        Kevin Tieskoetter                                |
|   kjt001@acad.drake.edu                     kjt001@dunix.drake.edu      |
|                               Drake University                          |
Newsgroups: rec.audio
From: stud1b53@bnr.ca (Anshu Prasad)
Subject: Re: Pro Logic Center channel speakers
Keywords: pro logic
Reply-To: stud1b53@bnr.ca
Organization: Bell-Northern Research Ltd.
Date: Thu, 05 Nov 92 14:29:03 GMT

In article <1992Nov4.173445.6396@keinstr.uucp>, marks@keinstr.uucp (Mike Marks) writes:
|> 
|> What do you use for a center channel if your mains are Magneplanar
|> MG-III's.  At 6' high by 2' wide, I can't just stick one of these
|> in the center if I want to see the screen.  A traditional "box"
|> center channel isn't going to tonally matched to the maggies.  Should
|> I just use the phantom mode?

  Well, this is just a thought, but couldn't you get a front projection
tv and place the center speaker _behind_ the screen.  I haven't done
much listening to this sort of arrangement (except at the local IMAX),
so I don't know what the best type of screen is for this application in
order to minimize the effect on the tonal characteristics of the speaker.
You might run into the trouble of having to buy two MG-III's if your
dealer won't split a pair for a center channel application, but thems
the breaks.  The projection tv won't be cheap either. :-) :-) :-) :-)

  More seriously, maybe phantom mode _is_ your best option...

|> _______________________________________
|> Mike Marks
|> 

-- 
   __ ___  
  /\ \ \ \  Anshu Prasad                        stud1b53@bnr.ca
 /--\ \/_/  Ottawa, Ontario, CANADA
/_/  \_\    All opinions are my own, not my employer's, BNR Ltd

Newsgroups: rec.audio,rec.audio.pro
From: gmw1@cunixa.cc.columbia.edu (Gabe M Wiener)
Subject: Re: DAT recorders with mike input
Reply-To: gmw1@cunixa.cc.columbia.edu (Gabe M Wiener)
Organization: Columbia University
Date: Wed, 11 Nov 1992 07:09:48 GMT

In article <1992Nov10.154309.9627@bilver.uucp> bill@bilver.uucp (Bill Vermillion) writes:
>
>It shows that I have been out of the business awhile.  What is T
>powering?

T-powering is just another method for powering condenser mics.  I don't
remember which pins of the XLR it uses, but it doesn't use the same as
phantom.  Schoeps microphones, for instance, are available in both 48V
phantom and 12V T configurations.


--
Gabe Wiener - Columbia Univ.     "This 'telephone' has too many shortcomings 
gmw1@cunixa.cc.columbia.edu       to be seriously considered as a means of 
N2GPZ in ham radio circles        communication. The device is inherently of
72355,1226 on CI$                 no value to us." -Western Union memo, 1877
From: philg@zurich.ai.mit.edu (Philip Greenspun)
Newsgroups: rec.audio
Subject: Re: Boston high-end dealers
Date: 11 Nov 92 17:24:55
Organization: M.I.T. Artificial Intelligence Lab.
Distribution: world
Reply-To: philg@martigny.ai.mit.edu
NNTP-Posting-Host: zug.ai.mit.edu
In-reply-to: on@husc10.harvard.edu's message of 5 Nov 92 17:11:33 GMT


If you have piles of money, but a Cello system from Boston's oldest
high-end dealer: Alan Goodwin (not his old mid-fi store "Goodwin's").

The tone control is about $12,000 as I recall.


--

      -- Philip Greenspun

-------------------------------------------------------------
MIT Department of Electrical Engineering and Computer Science
545 Technology Square, Rm 433, Cambridge, MA 02139
(617) 253-8574
Newsgroups: rec.audio
From: kong@leland.Stanford.EDU (Kong Kritayakirana)
Subject: COMBO PLAYER vs CD-ONLY PLAYER
Organization: DSG, Stanford University, CA 94305, USA
Date: Mon, 9 Nov 92 05:15:22 GMT

Hi:

I have saved up some money to upgrade my system. I'm thinking about
getting either a CD-only player or a Multiformat (combo) player.
My budget is around $450, and the two choices in both categories i
have narrowed down to are:

Sony MDP-455 Laserdisc/CD player    or
Denon DCD-1290 CD-only player

I have heard that Combo player provides inferior sonics compared to
CD player at the same price. Is this true? Another point is I plan to
use this PRIMARILY as a CD player. So the question is: Will CD player
be more durable than combo player given about 15-20 hours of use per
week? Any illumination on this subject will be greatly appreciated.

Kong Kritayakirana
EERA STAR Lab
Stanford University
Stanford, CA 94305
kong@leland.stanford.edu

Newsgroups: rec.audio
From: wkung@sail.uwaterloo.ca (Bill Kung)
Subject: Re: PNP vs NPN Output Stages
Keywords: Lock
Organization: University of Waterloo
Date: Fri, 13 Nov 1992 15:59:06 GMT

Maybe I should have sounded a little bit more assertive, although I still
might not know what I'm talking about.  I routinely measure noise in P-channel
and N-channel MOSFETs (discrete devices) and PNP and NPN bipolar transistors
(discrete devices).  I know for a fact that a PNP transistor will have a
lower input-referred 1/f noise value than a comparable NPN transistor.  1/f
noise has been adequately described by mobility-fluctuation models and
resistance-fluctuation models.  As to base spreading resistance, that can
usually be tailored by the process.
Newsgroups: rec.audio