HDTenEightyP/NetNews huggingface dataset:
From: curt@oasys.dt.navy.mil (Curt Welch)
Newsgroups: rec.audio
Subject: Re: MiniDisc is here!
Date: 30 Dec 92 06:44:56 GMT
Reply-To: curt@oasys.dt.navy.mil (Curt Welch)
Organization: Carderock Division, NSWC, Bethesda, MD

In rec.audio, deraadt@newt.cuc.ab.ca (Theo de Raadt) writes:
>What is the actual geometry and spacing of the disk? Is it 72M or 200M
>in size or what?

What do you mean?  What does 72M or 200M mean?  The articles I have don't
give any numbers like that.  The only physical numbers they give is the
shape of a "Pre-groove".  It's 1.1 microns wide and is separated by a 0.5
micron hill from the next "Pre-groove".  The article isn't real clear
about these "Pre-grooves" but I think they are grooves molded into
recordable MDs that tell the drive where to write.  This would mean
that adjacent tracks are spaced 1.6 microns apart.

Curt Welch
From: moskowit@panix.com (Len Moskowitz)
Newsgroups: rec.audio
Subject: Re: Clipping questions
Date: 31 Dec 92 21:03:09 GMT
Organization: PANIX Public Access Unix & Internet, NYC

Norman P. Tracy writes:
>The Polks, being real hi-fi speakers ...

No doubt this is due to <ahem> the "genius of Matthew Polk!"

-- 
Len Moskowitz
moskowit@panix.com
Newsgroups: rec.audio
From: joe@avs.com (Joe Peterson)
Subject: Re: MD and analog
Organization: Advanced Visual Systems Inc.
X-Newsreader: TIN [version 1.1 PL8]
Distribution: usa
Date: Thu, 31 Dec 1992 14:22:08 GMT

Joseph Chee-Yoon Lee (jlee@leland.Stanford.EDU) wrote:
: I'd don't recall reading whether MiniDisc recorders will be able to
: record from analog sources.  That would require them to have separate A/D
: converters, wouldn't it?  Any clarification would be greatly appreciated.
: Thanks,

Yep, the input to the Sony MZ-1 accepts either digital (optical) or analog
input.  I have only tried analog so far.  It must have a built-in A/D
converter.  The sound is great (except for really tiny cross-talk of
some sort when the input is extreamly quiet).  One neat thing I have been
doing is recording vinyl record onto MD.  Hearing the original clicks and
pops through the MD player is kind-of a kick!

				Joe



Newsgroups: rec.audio
From: joe@avs.com (Joe Peterson)
Subject: Sony MZ-1 (MD) recording noise
Organization: Advanced Visual Systems Inc.
X-Newsreader: TIN [version 1.1 PL8]
Date: Sun, 27 Dec 1992 17:40:12 GMT

I have been playing with a Sony MZ-1 (MD recorder) for a while now.
I like the unit very much, including the sound quality.  But I have
a question for anyone out there who has some experience or access to
one of these.

When doing analog recording (via analog line from a CD player), I
have noticed a slight modulated tone at a very low level (up and
down wavering tone).  You can hear it in the playback if you turn up
the volume all the way between songs from a CD (i.e. quiet) source.
It is mostly in the left ear, but a lower tone can be heard in the
right.  The wavering (modulation) of the tone's frequency seems to
be in sync with the dimming and brightening of the LCD display
while recording (you can hear it through the headphones while
recording as well).  I can hear it while recording with nothing
plugged into the input jack as well.

My theory is that there is some kind of cross-talk between the
power supply and the A/D converter (perhaps the left channel HW
is closer to the source).  As far as the bright-and-dim flucuations
of the LCD back-light: maybe this is due to the periodic activation
of the writing laser.

Any info from others out there would be appreciated.  I'd love
to know whether these bahaviors are normal for the unit or
not.

I am being a bit anal here (the interference I hear is not
really detectable when actual music is present!).

						Joe

Newsgroups: rec.audio
From: billn@hpcvaac.cv.hp.com (bill nelson)
Subject: Re: Watts/channel question (Was: Sony ES vs. Sony A/V receivers)
Organization: Hewlett-Packard Company, Corvallis, Oregon USA
Date: Sat, 26 Dec 1992 06:18:58 GMT

eric0139@student.tc.umn.edu (Grant Erickson) writes:
: 
: My parents purchased a Sony GXR-47ES A/V Receiver (much to my dismay) last
: fall, and it boasts only 35 or 40W per channel. It is driving one pair of
: Polk RTA-8L's.
: 
: With the volume control at ANYTHING near half, it will clip with reckless
: abandon. So, if this is indicative of the entire ES receiver line, I'd make
: sure you get a receiver with a HIGH power rating.
: 
: Just for contrast, downstairs, they have a 1978 Marantz 65W/ch receiver
: driving two Marantz Mk VII speakers. I have thrown everything I possibly
: can at that receiver and those speakers, and they still sound great, never
: distorts before my ears hurt and has never clipped once.

Not really a valid comparison. You are driving two different sets of
speakers - which do not have the same efficiency.  For a more valid
test, you would have to take the Marantz speakers, and drive them with 
the Sony Receiver.  If they clip also, then you can say that the Marantz
has a lot more headroom.

Bill
Newsgroups: rec.audio
From: kaul@bacchus.watson.ibm.com (Anil Kaul)
Subject: Info about receivers
Date: Thu, 24 Dec 92 23:16:02 GMT
Organization: IBM T.J. Watson Research Center

I'm in the market for a receiver and am willing to spend
around $300. I would appreciate any suggestions on what makes/models
to consider. 

Thanks,
-Anil.

kaul@watson.ibm.com
 

Newsgroups: rec.audio
From: tlode@nyx.cs.du.edu (trygve lode)
Subject: Re: Speaker wires
Organization: Nyx, Public Access Unix @ U. of Denver Math/CS dept.
Date: Sun, 3 Jan 93 08:03:44 GMT

In article <24536@alice.att.com> andrew@alice.att.com (Andrew Hume) writes:
>In article <1i4pl0INNbmu@iskut.ucs.ubc.ca>, twong@civil.ubc.ca (Thomas Wong) writes:
>> 
>> Can anyone describe the differences between speaker wires? What
>> characteristic should we pay most attention to? What is a good gauge to
>> use....etc? Thanks.
>
>	for your edification i replay the relevant part of teh FAQ.

[stuff deleted] 

>	You should have an EXTREMELY solid connection between cable and
>	speaker.  Speakers operate at very low impedances, so that bad
>	connections will create significant artifacts or signal losses at any 
>	power level.  For example, if the connection has a linear resistance
>	of just 1 ohm, the speaker damping factor will be dramatically 
>	reduced, making bass muddy. 

I assume we're talking about the electrical rather than mechanical damping
here (at least I can't think of a reason why adding a DC resistance would
affect mechanical damping) in which case I would think that the only way
in which the damping factor could be dramatically reduced by putting a 
one Ohm resistance in series with the speaker is if the DC resistance of
the low-frequency drivers and associated crossover network is dramatically
less than one Ohm, something that I suspect is rarely seen in real-world
speakers.

Am I mistaken in my understanding of damping factor here?  Anyone else have
any light to shed on this?

Trygve
From: edente@pearl.tufts.edu
Newsgroups: rec.audio
Subject: Request Subwoofer Advice
Date: 4 Jan 93 02:01:45 GMT
Organization: Tufts University - Medford, MA

I'd appreciate some advice on setting up my new Mirage PS12-90 Subwoofer.
I'm using my Pioneer AV Receiver and a pair of KEF C95 main speakers.
The best way for me to install the subwoofer, I beleive, would be to run a
loop through my receiver's lowlevel inputs and outputs, preamp outputs of
receiver to subwoofer, subwoofer to power amp inputs of receiver. No pro-
blem so far, but the cable run is about 30 feet, and even w/ MONSTER
INTERCONNECT cables there is a hum in the main speakers which the Puioneer
tech support people say can't be eliminated because of the length of the
cable run.  Is there any way around this? Can the hum be eliminated? It
really isn't that loud, but I'd rather not have it at all.

Instead of the above setup, I'm using the second choice - using the speaker
inputs to interrupt the run from receiver to speakers.  So the run goes
speaker outputs from receiver to speaker inputs on subwoofer to speaker
inputs of main speakers.  This is ok, but have couple of other questions:
The subwoofer (powered) has a low pass filter dial to adjust: 50Hz - 150Hz.
I just can't hear the optimum setting myself. Should I just set it halfway?
The phase switch, set at 0 or 180 deg. is another aural setting I'm supposed
to make, but I can't hear the difference.  I just have leaden ears, I guess.
Should I just leave it at 0?  The I have not been able to reach the Mirage
people to ask them.

Last question.  I know I'm supposed to use 10 or 8 guage w/ a run of this
length (30 ft.), but I've been using 12 gauge lamp cord - Am I really
missing much? 
Oh, one final note - my KEF main spearkers are 4 ohm impedence.  Does this
affect my subwoofer settings?
Thanks,
Ed Dentes
From: awelker@dciem.dciem.dnd.ca (Andrew Welker)
Newsgroups: rec.audio
Subject: Re: $onic Frontier.
Date: 21 Dec 92 15:05:03 GMT
Organization: Defence and Civil Institute of Environmental Medicine

In article <41485@unix.SRI.COM> henry@ginger.sri.com (Henry A. Pasternack) writes:
>
>   A recent poster asked about the $80 BUF-03's from Sonic Frontiers.
>I ordered their catalog and was astonished by their prices.  Even
>considering the Canadian dollar markup, it was pretty outrageous.
>I can't say anything about the quality of the company, but their
>components look to be a real ripoff.
>
>-Henry

I agree totally with Henry. DO NOT buy part from Sonic Frontiers(SF)!!!
If I wanted to get rich I would open an operation like SF. Buy parts in
large quantities direct from the manufacturer. Then build amps and
pre-amps with said parts and offer the euip. at decent prices. Finally,
rip off hobbyists by charging 10 times cost for parts!!! Sounds like a
winner to me. If you want caps and resistors, talk to the manufacturer
directly. And to the original poster, BUF-03's are $15 plus tax from
Newark in Mississaga.

Andrew Welker

Newsgroups: rec.audio
From: bp@cs.brown.edu (Boris Putanec)
Subject: Re: 'Bookshelf' Speakers???
Organization: Department of Computer Science, Brown University
	<1h5hpeINN9f7@charnel.ecst.csuchico.edu>
Date: Tue, 22 Dec 1992 00:07:21 GMT

In article <1h5hpeINN9f7@charnel.ecst.csuchico.edu> msiegall@OAVAX.CSUCHICO.EDU (MARC SIEGALL) writes:

   In article <perry-211292155452@bperry.gsfc.nasa.gov>, perry@lheavx.gsfc.nasa.gov (Brendan Perry) writes:
   >I'm in the market for a pair of so called 'Bookshelf' speakers in the $200
   >to use as my secondaries. I have a 33 WPC Denon DRA-300 I bought in 1984
   [stuff deleted]

   See if you can listen to some Paradigm Titans.  I'm about to get a pair
   myself, after listening to various models of Boston Acoustics, Yamaha,
   and (some others I don't remember).  BIC's Venturi 62s also sounded
   pretty good.  Both models retail for $199.  The Paradigms sounded as good
   as some other manufacturers' $300 speakers of the same size.

If you like the Pardigm Titans, check out the B&W 201s. I got them after
a direct A/B/C between the Titans, 201s and the BIC Venturi 62s. They
had the Titans nice bass with a really clean middle range and highs
(the Titans were a bit muddy on the high side).

boris
From: mjf9968@rigel.tamu.edu (Pi(3.143832666))
Newsgroups: rec.audio
Subject: Audio companies (was Re: Is high priced CD player worth the money?)
Date: 22 Dec 1992 03:15 CST
Organization: Texas A&M University, Academic Computing Services
Distribution: na
NNTP-Posting-Host: rigel.tamu.edu
News-Software: VAX/VMS VNEWS 1.41    

In article <1079@aos.brl.mil>, lapoint@adios.brl.mil (Claude LaPointe ) 
writes...

>i bought the cal audio and was so annoyed by nad's performance (if they
>make this poor a cd machine, can they do anything right?) that i didn't
>buy any of their stuff.

	I've seen this kind of "since they screwed up [some component], 
everything of their's must suck" attitude before and I'd like to take a 
moment to rail against it.
	Audio companies have this habit of diversifying and producing all
the components for your average system, despite the fact that frequently
they only excel at one or two components.
	Look at Yamaha.  Their AV amps are considered some of the best for
the price, yet most people wouldn't touch their speakers with a ten-foot
pole.  In a somewhat similarein, if you ask stereo fascist what CD player
to buy around $500, they're mostly going to answer Rotel.  But if you ask
about amps or pre-amps, Rotel is only going to be one of many names to be
mentioned.
	I don't see why a failure in one component should be some kind
of death knell for a company's entire line.
	To get right down to it, I own a NAD receiver and think it's the
greatest thing since sliced bread.  While I suspect that the NAD CD player 
isn't the greatest of components (having heard low opinions from more
than one source), I think it's just plain stupid to slag all of NAD's stuff
because of their CD player alone.
	Just random kibbitzing.

	Living better through chemistry,
	Mike "Pi" Freeman
	MJF9968@rigel.tamu.edu

Newsgroups: rec.audio
From: ledzep@cbnewsh.cb.att.com (carl.w.muhlhausen)
Subject: Re: CD SOund QUality
Organization: AT&T
Date: Mon, 21 Dec 1992 21:38:20 GMT

In article <24459@alice.att.com> jj@alice.UUCP (jj, the really irritated tonight) writes:
>In article <1h17e4INNrkv@usenet.INS.CWRU.Edu> co940@cleveland.Freenet.Edu (Nicholas E. Damato) writes:
>
>>I say lets leave it at ONE disc format for simplicity,
>>and work on a 32 bit 96KHz sampling system.
>I think we could keep CD and nothing else, but given
>the RIGHT methods,  one might make either MD or DCC
>better than CD.    CD is stuck, as it stands, to PCM signals.
>This is a fundamental idiocy.  Perhaps the use for CD would
>be to use a good perceptual compression algorithm to 
>provide 24 bit dynamic range (that's hearing-to-pain plus in
>dynamic range) and 96kHz sampling rate, all with the same
>bitrate of 1.4114 Mbits/second.

jj,

I (and I think other rec.audio crazies) would be interested in what
audible improvements we'd get out of more dynamic range and a
higher sampling rate. I was under the impression that 16 bits
gives more dynamic range than we need and a higher sampling rate
would benefit dogs and bats but few humans.
>
>-- 
>Extremism *Copyright alice!jj 1992, all rights reserved, except transmission
>   in the    *by USENET and like facilities granted.      Said permission is
>  defense of     *granted only for complete copies that include this notice.
> liberty is no vice.  *Use on pay-for-read services specifically disallowed.

Carl Muhlhausen		"Kum wit me iff you vant to liff"
att!taz!ledzep
From: dinesh@pyramid.COM (Dinesh Jalisatgi)
Newsgroups: rec.audio
Subject: Need suggestions on Mini-Systems or Desktop System.
Date: 28 Dec 92 22:49:22 GMT
Distribution: usa
Organization: Pyramid Technology Corporation, Mountain View, California
NNTP-Posting-Host: shadow.eng.pyramid.com

Hi,

 I am in the process of buying an mini-system or desktop system. My budget is

  around 300 to 500 dollars. Any suggestions as to which system to buy or what to

  look in the system. Any suggestions on the mail order also will be helpful.

 Please replay by email to dinesh@pyramid.com

 I will summarize if I get enough responses.

 Thanks.



               -d----------         Dinesh S. Jalisatgi.
              --ddd--------         Pyramid Technology Corporation
            ----dddddd-----
          ------ddddddd----         off : (408)-428-7378.
        --------ddddddddd--         email: dinesh@pyramid.com
From: co940@cleveland.Freenet.Edu (Nicholas E. Damato)
Newsgroups: rec.audio
Subject: Class-A-Stasis, FAQ?
Date: 4 Jan 1993 05:48:47 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


Hello, I don't know if this is an FAQ or not, however I thought
i'd ask it anyways.
I understand the basic principle behind class A, AB, A/AB etc.
but i was recently auditioning a threshold amp on a pair of
Thiel speakers. I was asking about the usual specs and the     
salseman said that threshold uses class-A-Stasis Amplification
with "Absolute-Zero" Dynamic headroom. What's the deal here?
     
I've never heard of this before. what does class have to do
with headroom, and even though it had "Zero" headroom it really
cranked for it's power rating.
 
just curious.
ned.
 
p.s. Q: What's the difference between an audio salesman and a
        used car salesman?
 
     A: The used car salesman KNOWS when he's lying!!
 
Newsgroups: rec.audio
From: RYNA10@waccvm.corp.mot.com (Jay Kopycinski)
Subject: COMPONENTS FOR SALE
Organization: Motorola
Date: 21 Dec 1992 15:30:52 MST

I HAVE THE FOLLOWING FOR SALE:

1) KENWOOD KR4070 RECEIVER (40 watts per channel)    $75

2) KENWOOD KT8300 ANALOG TUNER  $50

3) TOSHIBA F15B DIGITAL TUNER (10 presets, gold RCA jacks)  $75

4) TOSHIBA C15B PREAMP (gold RCA jacks)  $75

ALL COMPONENTS IN LIKE NEW CONDITION, HAVE MANUALS FOR ALL, AND PACKING
MATERIALS FOR 1,2, AND 4.

FOR MORE INFO CALL JAY @ 602-981-8941........I HAVE NO E-MAIL CAPABILITY.



From: kirk@hpcc01.corp.hp.com (Kirk Lindstrom)
Date: Thu, 24 Dec 1992 01:43:52 GMT
Subject: Re: Re: Recorded using B&W speakers
Organization: Shredding the water of SF Bay, HP-OCD
Newsgroups: rec.audio

>In article> jack@dcs.glasgow.ac.uk (Jack Campin) writes:
>> Somewhere I read that recording companies in the 60s took the exactly
>> opposite approach when mixing-down pop tracks: the last stage in the chain
>> was the sort of speaker you'd find in a cheap trannie on the beach.  Since
>> that was where their product was aimed, that was what they balanced it for.
>
>That's current practice, I'm afraid to say.  On rock material it's a
>lottery what's happening below 100 Hz.
>
>ian
----------
Interesting.  Explains why it is so rare to get Telarc discs on sale
8-(.  I just got Telarc's "Symphony #3, Saint-Saens, Michael Murray" and
noticed that they used the B&W Matrix Series II speakers for the
orchestral mix and ADS-1530 speakers for the organ mix.  Checking
several other Telarc discs shows ADS-1530 biamped, B&W, and some brand I
had not heard of "Rogersound Lab 3300" (Bachbusters).

Do any of the a/d/s fans out there know what the 1530 is?

Kirk out
From: mmm@cup.portal.com (Mark Robert Thorson)
Newsgroups: rec.audio
Subject: Eliminating Hiss, article published
Date: Tue, 29 Dec 92 19:18:38 PST
Organization: The Portal System (TM)

Some months ago I posted to this group on the topic of eliminating
hiss in an audio processing system I built based on an Intel
neural network chip.  I got a few requests for more information
on this project, and an article on the device has recently been
published.  See the February 1993 issue of _Dr._Dobb's_Journal_,
page 50.
Newsgroups: rec.audio
From: monitn@rebecca.its.rpi.edu (Nicholas Monitto)
Subject: Re: Poor college student seeks center speaker
Date: Tue, 22 Dec 1992 20:58:45 GMT

shiv@bnr.ca (Shiv Naimpally) writes:

>Just about all the center channel speakers I have seen are <$200.
>Infinity, Yamaha, Mirage, Boston Acoustics, etc. all have them 
>for <$200. Paradigm has also released one in that price range.

>In Ottawa the cheapest I have seen are the Yamaha ($100 Canadian)
>and the Infinity ($150 Canadian).

Pioneer makes one available in at least some US chain stores and mail order
outlets (can't remeber the model number) which goes in the $50-75 range. My
roomate from a year ago has one and it worked fine. Pretty sure it's shielded
too, since we sat it on top of our TV.

Nick
monitn@rpi.edu
Newsgroups: rec.audio
From: hans@smab.se (Hans C Larsson)
Newsgroups: rec.audio
Subject: Re: CD/LD jitter: I certainly do get it! (Was: Kerry doesn't get it...)
Date: 3 Jan 93 22:08:05 GMT
Organization: Saab Missiles AB, RLD-Gbg, Sweden

The problem arises when an unstable pulse train is *RECEIVED* by
a D/A-converter *FROM* a digital transport.
(I.e. between *TWO* boxes.)

The receiver has to Phase Lock on a square wave which might not
be very "square".

From this you will get time-shift on the samples on the *RECEIVING*
end since (virtually) all D/A-converters lacks any significant
amount of buffer memory *COMBINED* with re-clocking of the signal.
(The only exception that I know of is the (horrendously expensive)
Technics SH-X1000 D/A converter).

Note that any amount of buffer memory is useless without
re-clocking of the signal.

I guess that re-clocking might be tricky since the receiver must
let his clock "drift" to avoid long term buffer under/over-flow.

A simple way is to use a good transport...
-- 
------------------------------------------------------------
        Hans C Larsson			Email:	hans@smab.se
	Saab Missiles, Sweden		Motto:	"keep it short"
From: randy@unix.ecs.rpi.edu (Randall Bradley)
Newsgroups: rec.audio.high-end
Subject: Re: Linaeum Speakers
Date: Thu, 24 Dec 1992 18:39:54 GMT
Organization: Rensselaer Design Research Center, RPI, Troy, NY
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

it was reported that someone wrote that they could walk all around the
Linaeum speakers and still "hear highs." 

this seems like it is entirely a ROOM effect!! Clearly this will not
happen in an anechoic environment. 

Almost certainly this will account for the different effects reported by
different "reviewers." 

One must think beyond the explicit when analyzing ANY reports, be they
"high-end" magazines or scientific papers. This is supposed to be the
"high-end" forum, eh?

			_-_randy bradley-_-

			(BEAR Labs)
From: al@qiclab.scn.rain.com (Alan Peterman)
Newsgroups: rec.audio.high-end
Subject: Re: McIntosh 275
Date: Sun, 20 Dec 1992 08:14:22 GMT
Organization: SCN Research/Qic Laboratories of Tigard, Oregon.
	id <m0n3Lnw-000UQQC@qiclab.scn.rain.com>; Sun, 20 Dec 92 00:14 PST
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

In article <1gsmccINNa3e@uwm.edu> <U37426%uicvm.uic.edu@OHSTVMA.ACS.OHIO-STATE.EDU> writes:
>    I just read in the october issue of The Absolute Sound that McIntosh will
>be remaking one of their old tube amps, the 275.  Does anybody have one of the
>originals?  When was this amp made the first time?  I would like to here from
> anybody who has this or any other McIntosh amp.  thanks!

I own a MC-275 - have had it for about 15 years since I got it from Control
Data when they quit using it as an instrumentation amp.  They had it
driving a shaker table for several years.  They were made from 1961-70
according to the Blue Book, but I have my doubts about those dates..I
do know they were made from 1964-1968 for sure..

I was told by a McIntosh dealer that the new 275 is just a limited run
of 1000 units, and will sell for $4000.  I suspect they are all sold,
if that production number is correct.

>by the way....what power rating does the 275 have?

McIntosh is a good refutal to the claim that model numbers could not be
indicative of power ratings according to the FCC regulations, since
the 275 means 2 channels at 75 watts per channel..and that follows for 
most of their amps.



-- 
Alan L. Peterman                                 (503)-684-1984 hm & work
                       al@qiclab.scn.rain.com
It's odd how as I get older, the days are longer, but the years are shorter!