HDTenEightyP/NetNews huggingface dataset:
From: Guha@mcc.com (R. V. Guha)
Newsgroups: rec.audio
Subject: Request for opinions on front-ends
Date: 17 Dec 1992 11:26:08 -0600
Organization: UTexas Mail-to-News Gateway
NNTP-Posting-Host: cs.utexas.edu


I am considering replacing my current source
(Sony X33ES) with something better. (I currently
use the variable output on the Sony to feed
a pair of Krell KMA-100 amps (through Kimber KC1) 
which in turn drive B&W 802s (series 2)  through
some mid-level Monster cables. As soon as I
can sell the kma100s, I'll replace them when 
ksa-150s).

I am seriously considering going the route of
the Wadia-6 CD player. In addition to avoiding
buying a transport and a preamp, it also gives
me a remote! The other alternative is to get
a Theta Gen II with a Krell KSL preamp. The 
transport would initially be something like a 
Cal Delta (to be replaced with something better
later).

Unfortunately, dealers for such equipment are
not easy to come by where I live. So I haven't
yet had a chance to audition either of these
two options.

I'd be interested in any opinions, comments, 
suggestions, ...

Thanks

Guha
Newsgroups: rec.audio
From: bill@bilver.uucp (Bill Vermillion)
Subject: Re: CDs and cars
Organization: W. J. Vermillion - Winter Park, FL
Date: Thu, 17 Dec 1992 02:28:33 GMT

In article <dsblack.724521809@vincent2.iastate.edu> dsblack@iastate.edu (Vilkata TDK) writes:
>In <1gm1q7INNjev@charnel.ecst.csuchico.edu> msiegall@OAVAX.CSUCHICO.EDU (MARC SIEGALL) writes:
>
>>I have an in-dash CD player, and was wondering if anyone had answers to
>>these two questions:

>>I keep some discs in my car (in a holder).  Do I need to worry about
>>the outside temperature?  How do near freezing temps affect CDs, even
>>if they are in velvet lined pockets?

>I don't think it matters much, if any.  The biggest problem I ever had with
>the cold was last winter, when the CD's I left in my car fogged over.  In fact,
>the lens on my portable (I now have an in-dash) fogged over, too.  Basically,
>they wouldn't play until everything defrosted.

During a cold morning last week, (45 degress is cold in Florida) I had
the same fogging problem.  Turned on the AC and dried out the car and
it was fine.

Don't worry about the cold.  And I don't worry about the heat.    Just
keep them away from direct sunlight, like in the glove box.

>>If I'm playing a disc and turn the car off, the CD stays in the player.
>>When I start the car again, the player picks up right where it let off.
>>My tape deck automatically ejects tapes when the deck is turned off.
>>Should I be sure to remove my discs before turning off the car, or are
>>they OK in the deck?  

>Not sure, but I would assume they're safe.

No problems.    And I can say that with 5.5 years of an in-dash unit.
Tapes can take a 'set' when wrapped around a capstan.  Discs won't get
hurt.

Heat doesn't bother either, as it can hit 120-140 inside in the summer.
All that seems to have done is made the shock mounts harder.  I am
getting more skips on bad roads lately.  


-- 
Bill Vermillion - bill@bilver.oau.org  bill@bilver.uucp
                - ..!{peora|tous|tarpit}!bilver!bill
From: ss@wpi.WPI.EDU (Scott Streeter)
Newsgroups: rec.audio
Subject: Audio Control / AudioSource EQ's
Date: 16 Dec 92 08:20:38
Organization: Worcester Polytechnic Institute, Worcester, MA 01609-2280
NNTP-Posting-Host: wpi.wpi.edu


I need opinions on Audio Control EQ's. The sales rep spoke highly of
them, but I wanted to get some bias opinions off the net. I was
looking at the C-101 Analyzer/Equalizer. Also, how is the quality of
AudioSource and Kenwood for EQ's? I was one of each that were nice
also. Thanks...

--
 Scott Streeter                             Visit the Star Wars Archive at
 ss@wpi.wpi.edu                             wpi.wpi.edu       130.215.24.1
Organization: University of Maine System
Date: Friday, 11 Dec 1992 13:03:33 EST
From: <IO10046@MAINE.MAINE.EDU>
Newsgroups: rec.audio
Subject: Older Preamps Forsale.


    I have an old pair of Dynaco stereo preamps forsale.  I forget
the model numbers.  I have used them and they work perfectly and
sound pretty good.  I have no idea want something like this may be worth
so make an offer.


Aaron Brasslett
University of Maine
Newsgroups: rec.audio
From: DPierce@world.std.com (Richard D Pierce)
Subject: Re: tweaks for cheap speakers
Organization: The World Public Access UNIX, Brookline, MA
Date: Wed, 16 Dec 1992 04:27:06 GMT

In article <bill.724460130@sarge> bill@verdix.com (William Spencer) writes:
>
>DPierce@world.std.com (Richard D Pierce) writes:
>>In article <1992Dec14.184317.17716@bmerh85.bnr.ca> shiv@bnr.ca (Shiv Naimpally) writes:
>>>Get an equalizer. Pick up an eq with 10-12 bands per side. You should be
>
>>It's a common myth that an equalizer is useful in this application. The
>
>Yeah, but getting rid of a lot of bass over a wide range would certainly deal
>with the problem :). One concern you didn't mention: distortion. If distortion 
>is causing the muddiness, leave the speakers against the wall and cut bass
>to reduce distortion (tone controls should do it).

Actually, in spite of the smiley, it still doesn't work that way. In the
example that I gave and may others, the reverb tail so prediminates
regardless of the amount of energy that 20 dB of cut seems to have no
audible effect.

Further, if the speakers have distortion, then, by god, replace them. Why
bother trying to make a sow's ear into a studio monitor?

-- 
|                Dick Pierce                |
|    Loudspeaker and Software Consulting    |
| 17 Sartelle Street   Pepperell, MA  01463 |
|       (508) 433-9183 (Voice and FAX)      |
From: dhukill@esprit.prime.com (Dave Hukill)
Newsgroups: rec.audio
Subject: Re: Sony CDP-X111ES
Date: 18 Dec 92 16:21:50 GMT

jeh@cmkrnl.com writes:
> In article <6063@rosie.NeXT.COM>, Matt_Watson@NeXT.com writes:
> > Anyone have any experience with this beast?  I need a decent CD player  
> > with optical digital out, and this seems to be a contender...
> 
> I'd look elsewhere.  The stories of problems with Sony CD players, both -ES
> and non-, are legendary.  
> 

I disagree. I have a Sony CDP-C87ES, and it has never had any trouble playing
any of my discs, even those that won't play on other players. It's quite
simply the best CD-changer I've seen. It's quite possible however, that are
significant differences between players even within the ES line itself. I
can't speak for the CDP-X111ES, but I've heard great things about the
CDP-X777ES.

Just my humble opinion - 
Dave Hukill <dhukill@esprit.prime.com>
From: eric@prodigal.psych.rochester.edu (Eric Hansen)
Newsgroups: rec.audio
Subject: Re: Acurus/Aragon
Date: 14 Dec 92 16:02:52 GMT
Organization: University of Rochester - Rochester, New York

In <1992Dec11.223950.10750@leland.Stanford.EDU> kong@leland.Stanford.EDU (Kong Kritayakirana) writes:

>Acurus and Aragon are made by 

>	Mondial Designs
>	2 Elm St.
>	Ardsley, NY 10502
>	914-693-8008

>A good place to mail order Acurus and Aragon at discounted price (something like
>5% NOT 25%, mind you) is

>	SoundEx
>	800-444-2040, 215-640-4433

>Very nice people. No 6th Ave. type cheating or bait 'n' switch. Recommended.


I will second that recommendation -- I ordered a set of  speaker stands for my
Apogee Minors at $30 less than any other place I called (delivered, even!)

- Eric

--
* Eric J. Hansen                       |    Center for Clinical Computing   *
|  eric@binoc.bih.harvard.edu          |   350 Longwood Avenue, Boston, MA  |
*  eric@prodigal.psych.rochester.edu   |            (617) 732-5925          *
From: ss@wpi.WPI.EDU (Scott Streeter)
Newsgroups: rec.audio
Subject: Re: Shine On
Date: 18 Dec 92 08:03:48
Organization: Worcester Polytechnic Institute, Worcester, MA 01609-2280
NNTP-Posting-Host: wpi.wpi.edu
In-reply-to: kong@leland.Stanford.EDU's message of Fri, 18 Dec 92 02:14:30 GMT

>>>>> On Fri, 18 Dec 92 02:14:30 GMT, kong@leland.Stanford.EDU (Kong Kritayakirana) said:

kong> Recommended for PF fans: "Shine On" Improved sound quality over
kong> previous releases. 9 CDs total. Nice book and postcards.

Thought it was 8 CD's. Or is it 8 albums, 9 CD's (since The Wall is 2)

--
 Scott Streeter                             Visit the Star Wars Archive at
 ss@wpi.wpi.edu                             wpi.wpi.edu       130.215.24.1
Newsgroups: rec.audio

>    The term "Class C" always suggests to me a circuit in which the
> device conduction angle is significantly less than 180 degrees.  I
> automatically think of CW transmitters when I hear the term.  Such
> an amplifier is wholly unsuited to linear operation, whether at
> audio frequencies, or at RF, as in an AM transmitter output stage.
> 
> -Henry
> 

Henry, you're going to confuse a lot of people with that last bit - most
commercial AM transmitters DO use a class C output stage.  The trick is
that the modulation is done at the output - the output stage is NOT amplifying
an already-modulated signal, and so amp linearity is unimportant.  (SSB
transmitters are another story altogether, even though SSB is a "subset"
of AM.)


Bob Myers  KC0EW   Hewlett-Packard Co.      |Opinions expressed here are not
                   User Interface Tech. Div.|those of my employer or any other
myers@fc.hp.com    Fort Collins, Colorado   |sentient life-form on this planet.
Newsgroups: rec.audio
From: ferguson@tc.fluke.COM (Ed Ferguson)
Subject: Slew Rate
Organization: John Fluke Mfg. Co., Inc., Everett, WA
Date: Wed, 16 Dec 1992 19:12:06 GMT

The formula I picked up is:

fmax = (slew rate / (6.28 * Vop)) * 1,000,000

fmax = the maximum frequency the amp can pass
with an output of Vop, undistorted due to
slew rate limiting.  Example:

My 40 watt class A amp has a slew rate of
10V/uS.  At 40 watts into 8 ohms, the peak
output voltage, Vop is 28 volts.  Plug 10
and 28 into the formula and find that
57 kHz is the max freq before slew rate
induced distortion occurs.  Note that this
is unrelated to bandwidth, which is 500 kHz
for this amp!

Ed Ferguson
From: curt@oasys.dt.navy.mil (Curt Welch)
Newsgroups: rec.audio
Subject: Re: WHY NOT USE A BIGGER DISK FOR SONY MD?
Date: 17 Dec 92 16:23:54 GMT
Reply-To: curt@oasys.dt.navy.mil (Curt Welch)
Organization: Carderock Division, NSWC, Bethesda, MD

In rec.audio, keivjam@elof.iit.edu (James Keivom) writes:
> i heard the sony md disk is 2" square.  wouldnt it have been better
>to make the cartridge about the same size as a cd(a bit smaller for
>convienience) and get rid of the compression system.

I'm not sure, but I think the cost to manufactur the recordable version of
the disk is not just a linear factor of the size.  I think it's like
trying to manufacture IC's.  You get defects in the material, and have
to throw away the bad ones.   The bigger the disk, the harder it is to
manufacture without defects, or the more you have to make in order to get
one good one.

Someone just posted prices for data disks.  What were they? $50
for a 3 1/2" disk and $150 for the 5 1/2"?  I think this is one of the
main reasons we haven't seen recordable CDs yet.  The technology is
there, but because the blank meda will cost > $50 each, it can never
be a mass consumer product.

Curt
Newsgroups: rec.audio
From: stud1b53@bnr.ca (Anshu Prasad)
Subject: Re: Speakers <$1000 (Definitive DR-7, PSB, Polk, etc)
Keywords: speakers definitive dr-7 dr7 psb polk 
Reply-To: stud1b53@bnr.ca
Organization: Bell-Northern Research Ltd.
Date: Fri, 11 Dec 92 17:36:31 GMT

In article <1992Dec11.050319.11849%jim.uucp@wupost.wustl.edu>, mike%jim.uucp@wupost.wustl.edu (Mike S.) writes:

[Stuff Deleted]

|> 
|> The Definitives sounded GREAT!  I found myself wondering, though--is
|> it just me, or do the DR-7's sound just about as good as the BP-10's?
|> 
|> The BP-10's sounded different, but I don't know if I would call it
|> better (especially for the $300 difference (~750 for the DR-7's,
|> ~1050 for the BP-10's).
|>

  The BP-10's are bipolar and the DR-7's are not.  When I auditioned
them in an A/B test, much of the difference seemed to trace back to
this.  Both speakers sounded great, with clear, sweet mids and highs
and surprisingly clean bass (no muddiness).  However, imaging on the
DR-7's was fantastic while the BP-10's were not nearly as pin-point
accurate.  However, the BP-10's have a "larger-than-life" soundstage
which is VERY impressive for surround encoded movies (I tested them
in that application as well).  This is where they really shine.  When
combined with the BP-2 bipolar surrounds and the C1 center speaker,
I don't think this system can be beat for the price.

|> Definitive brochures say these models are flat into the very low
|> 20Hz range--has anyone done any actual measurements to verify this?
|> 
|> 20Hz is a bit hard to swallow for a speaker with only a 6.x" woofer.
|>

  I thought so too so I A/B'd the BP-10's against a couple of Mission
Cyrus speakers with a Velodyne sub (sorry, can't remember model numbers).
The BP-10's were much better than the Mission-Velodyne combo even for
the low frequency explosions not to mention that the BP-10's were about
$300 cheaper.  I don't know about 20Hz, but they certainly _feel_ like
they go pretty low.
 
|> Any other opinions on these speakers, or others in this range?
|> 
|> Mike
|> -- 
|> mike%jim.uucp@wupost.wustl.edu

-- 
   __ ___  
  /\ \ \ \  Anshu Prasad                        stud1b53@bnr.ca
 /--\ \/_/  Ottawa, Ontario, CANADA
/_/  \_\    All opinions are my own, not my employer's, BNR Ltd
From: lstowell@pyrnova.mis.pyramid.com (Lon Stowell)
Newsgroups: rec.audio
Subject: Re: technics vs denon
Date: 11 Dec 92 18:31:20 GMT
Reply-To: lstowell@pyrnova.pyramid.com (Lon Stowell)
Organization: Pyramid Technology Corp., Mountain View, CA

>In article <1992Dec8.024540.6629@nmt.edu> drkhoe@nmt.edu (ONID) writes:
>>Me, I would pick an Onkyo... of course if I had the dough... maybe a Marantz
>>or some other high-end...
>
In article <1992Dec10.104835.11018@bristol.ac.uk> P.Smee@bristol.ac.uk (Paul Smee) writes:
>Is this maybe a cultural difference?  I never thought I'd see the words
>'Marantz' and 'high-end' used in the same sentence.
>
   Maybe he was referring to the OLD "Marantz" when Saul still ran
   the company and their products compared very nicely to McIntosh.

   Remember the old 10B tuner with the built-in O-scope?

   Oh yeah, >:-)
Newsgroups: rec.audio
From: brad@buck.viewlogic.com (Bradford Kellogg)
Subject: Re: Specs. on CD players
Originator: brad@buck
Organization: Viewlogic Systems, Inc.
Date: Fri, 11 Dec 1992 21:36:10 GMT


In article <1992Dec11.122842.11469@cs.unca.edu>, fauerbac@ivy.cs.unca.edu (John Fauerbach) writes:
|> What is 4x or 8x oversampling?
|> 
|> What is dual D/A converters?
|> 
|> Is 8x oversampling with single or no D/A converters better than 4x oversampling
|> with dual D/A converters?
|> 
No DAC means it is a transport only, and you need a separate DAC, which
means very high end and very big bucks. Other than that scenario, unless 
you are an EE, all of this stuff is a bucket of red herrings. None of
it is relevant to you.

|> Basic question is "How can you tell if you are getting a good CD player or a
|> piece of junk when they give you the oversampling and D/A converters?"
|> 
There is no way you can make an intelligent purchasing decision based on
this information. It is *meaningless*. It is of no more use to you than
knowing if a car you are interested in buying has worm and roller or rack
and pinion steering.

The specific technology used doesn't matter. What is important is how well 
the technology is implemented. A Sanyo for $99 might use the same technology 
as a Rotel for $500. Which do you suppose is the better implementation?

- BK
From: U49110@uicvm.uic.edu
Newsgroups: rec.audio
Subject: Wanted: Used Surround Sound Equipment
Date: 20 Dec 92 19:56:11 GMT
Organization: University of Illinois at Chicago


  Actually there three questions:

  1) Can anyone point out for me some good reading for buying surround sound
     equipments - I have a complete ADCOM system and I want to add
     surround sound effect to it.

  2) The salesman in the audio store wants to sell me a demo model of Yamaha
     soundfield processor (?) (it's a two-piece set).  It sounds OK to me.
     Any suggestion about this model?

  3) Besides the surround sound equipment, if you also want to sell your
     speakers for surround sound generation, that'll be great, too.

  Have a nice holliday to you all!

Remen
Newsgroups: rec.audio,sci.electronics
From: mcovingt@aisun3.ai.uga.edu (Michael Covington)
Subject: Re: Good deals on scopes?
Organization: AI Programs, University of Georgia, Athens
Date: Mon, 14 Dec 1992 05:43:15 GMT

I would shy away from brands that are only sold by one vendor
(i.e., nameless imports).

B&K oscilloscopes are inexpensive and very nice.

You can find used Tek scopes (in varying condition!) at hamfests
(ham radio swap meets; ask info@arrl.com when there will be one in
your area).  But you buy "as is".

All modern oscilloscopes (since 1970 or so) have very bright displays.

-- 
:-  Michael A. Covington     internet mcovingt@uga.cc.uga.edu :   Verbum caro
:-  Artificial Intelligence Programs       phone 706 542-0358 :    factum est
:-  The University of Georgia                fax 706 542-0349 :  et habitavit
:-  Athens, Georgia 30602-7415 U.S.A.     amateur radio N4TMI :   in nobis...
From: rmf@bpdsun1.uucp (Rob Finley)
Newsgroups: rec.audio
Subject: Re: Magneplanars again...from he who wishes to know. (spikes)
Date: 20 Dec 92 04:34:24 GMT
Organization: Harris Allied Broadcast Div., Quincy, IL

In article <Bz9pHM.B40@fc.sde.hp.com> j_adams@fc.hp.com (John Adams) writes:
>
>: - is each speaker stable, physically?  Do the stands/feet brace the system
>:   well?  These would be near a heavy traffic zone, and who knows what stray
>:   air currents could do...8-)  Are spiked feet and Uranium weights a nice
>:   touch to stiffen the planar?
>
>I wouldn't try using them for blocking tackles but it'll take more than a
>strong breeze to blow'em over.  The support system, which are simply metal
>feet bolted to the frame, rests flat on the floor will probably weaken if
>placed on spikes.

I had the opportunity to attend a seminar hosted by my Maggie dealer
and Magnepan and meet Mr. Whinney, the founder of Magnepan.

After noticing the more substantial stands on models like the MG1.5 and 3.3,
I asked him if any improvement could be made on the stands.
His response was that spikes cannot improve anything on a planar speaker
as the whole thing is going to flex much like a flagpole.  

I may spike the front of my SMGa's so that the landlord doesn't have
these funny lines in the carpet ( on the other hand, they are
handy when I finish some placement experimenting  B-).

The SMGa's stands are rather simplistic  and I too wondered why the
sound escaped the front through slots between the magnets. 
I didn't get a chance to ask him.  But, after knocking one over
frontways, the magnet frame does protect the diaphram on the backside. 8-).
(That was definitely a dum-dum-move and not air currents).  A misguided
moving sofa would better describe that situation.   I wouldn't worry about it.

Enjoy your Magnepans.  They will have to pry mine out of my dead fingers.
(Well, until a pair of 1.5's become affordable.)
Robert
From: lancer@wpi.WPI.EDU (Stephe Lewis Foskett)
Newsgroups: rec.audio
Subject: Re: More about receivers (Yamaha, Denon, Carver)
Date: 19 Dec 92 00:54:10
Organization: ZikZak Corporation
NNTP-Posting-Host: wpi.wpi.edu
In-reply-to: kirk@hpcc01.corp.hp.com's message of Wed, 16 Dec 1992 22:58:36 GMT

>>>>> "kirk" == Kirk Lindstrom <kirk@hpcc01.corp.hp.com> writes:

kirk> I trust Yamaha over Carver since I do NOT trust marketing words
kirk> without a good solid technical explaination of what they mean.
kirk> If I did, then I'd have a home full of dicers 'n slicers plus
kirk> $20 Capacitors to make my whole home a TV antenna!

Not to dispute you about Carver's flaky techno-babble lately, but I
recently had the "pleasure" to try to fix a Yamaha receiver.  Talk
about flaky...  This thing was pushed to the limits to get those few
extra watts out of some tiny amp ICs.  The heat sink and power supply
were too tiny for a Yorx system.  The list goes on.  

In short, I was NOT impressed with the design or workmanship of this
~3 year old Yamaha lower-end receiver.  

BTW it needed fixing 'cause the speaker relay _blew_.  How do you blow
a relay and not anything else in the box?  *grin*  (It wasn't mine, if
you're wondering.  I've got a Kenwood and I'm happy with it.)

.s.
--
- so spake lancer@wpi.wpi.edu -   - so says the Beautiful South: -
-       With a choice between lonliness and lovesick QE2s        -
-               Well, tonight I choose self abuse                -
From: rkarlqu@scd.hp.com (Richard Karlquist)
Newsgroups: rec.audio
Subject: Re: Planars and stuff...
Date: 18 Dec 1992 02:27:20 GMT
Organization: Hewlett Packard Santa Clara Site
NNTP-Posting-Host: hpscrj.scd.hp.com
X-Newsreader: TIN [version 1.1.4 PL6]

Mike Sikorsky (sikorsky@ee.ualberta.ca) wrote:
: 
: that I should go for a design that almost does this.  Well knowing the 'lack'
: of low bass from planars, I readily accept that the rest of the audio
: spectrum that they do reproduce readily can outperform even the most costly
: box designs.  Why, then, would/should I pay countless dollars just to
: reproduce a range of music (15-45 Hz) that is generally absent from most
: recordings?

I am a big fan of planar speakers, but I disagree with your premise.  Most
planar speakers do not have a small signal bandwidth down to 45 Hz. and
none have a full power bandwidth down to that frequency.  The cutoff is more
like 200 Hz.  Also, their bass response is highly dependent on the room 
acoustics (much more so that cone speakers) because the diaphragm is loaded
acoustically whereas a cone is loaded mechanically by cone mass and the 
enclosure.  Also, many planar speakers cannot reproduce really high SPL's
even at 1 kHz.

I knew a guy with two pairs of KLH-9's driven by four 300 watt amplifiers 
installed in a custom built audio room.  He had enough power to arc over
the speakers.  They sounded great (but not loud).  However, the 
average 3-way 12-inch cone speaker system with a 100 watt/channel receiver
could drown them out easily at either bass or midrange frequencies.
Of course, you had to sit in the (one) official listening chair to get
the right sound.   Also, consider that if he had to install the system
in the living room, the XYL would have vetoed the KLH-9's on the grounds
of size (four 6 foot high by 2 foot wide panels!).


--
       -------------------------------------------------
       |  Rick Karlquist                               |
       |  Hewlett-Packard Santa Clara Division         |
       |  Precision Time and Frequency R&D             |
       |                                               |
       |  email:  rkarlqu@scd.hp.com                   |
       |  landline:  (408)-553-2194                    |
       |  radio:  N6RK                                 |
       ------------------------------------------------
Newsgroups: rec.audio
From: tranhun1@elof.iit.edu (Hung Q. Tran)
Subject: ANYONE GOT A PORTABLE DAT FOR SALE?
Organization: Illinois Institute of Technology, Chicago
Date: Mon, 21 Dec 92 07:04:21 GMT


Anyone interested in selling off their potrable dat?

thnaks