HDTenEightyP/NetNews huggingface dataset:
From: gt0869a@prism.gatech.EDU (WATERS,CLYDE GORDON)
Newsgroups: rec.audio
Subject: Re: Acoustic studio monitors?
Date: 31 Aug 92 00:36:30 GMT
Organization: Georgia Institute of Technology

>In article <1992Aug27.001938.9082@riacs.edu> bradley@magic.riacs.edu (Brad Christofferson) writes:
>>I thought the brand name "Acoustic" sounded like one of the popular high 
>>fideltiy brands.  They told me the speakers regularly sell for $849 each.
>>I paid $200 for the pair.  I haven't hooked them up yet.  For my ears, they

>>wouldn't buy them but most people end up paying around $200.  They are probably
>>worth that much.  The manufacturer is apparently not very reputable.

No, they are most emphatically NOT worth $200, by any stretch of the
imagination. I dissected one, and obtained replacement driver cost:

Woofers: could be obtained for $12 each.
Midranges: could be obtained for $5 each. 
Tweeters: could ba obtained for $3 each.
Total: $40.
Cabinets: A local cabinet maker said he could build something identical
piece work pricing, (MUCH higher than mass prod) for $40/pr.
X-overs: could be duplicated for $8.
This is normal distributor pricing; manufacturers probably pay 1/2 this.
So, the manufacturer has probably about 88/2 in each pair.

A lousy $44!!!! 

Given normal retail pricing ANYthing over about $129/pr is highway 
robbery, especially given how unreliable and inaccurate they are.

I have seen MUCH higher quality stuff for $129 though...
(Energy, Sony, etc)

Sorry if this seems like a flame. It was not intended as such, just a
strong warning to avoid this scam. Anything from out of a truck is
bad business unless you know enough about speakers to analyze them!

Regards,
Gordon.


-- 
WATERS,CLYDE GORDON-Georgia Institute of Technology Atlanta Ga 30332 
******<LANGUAGE IS A VIRUS! - Laurie Anderson-Home of the Brave>******* 
uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!gt0869a
Internet: gt0869a@prism.gatech.edu
From: ssr@cypress.com (Bapcha/FPGA)
Newsgroups: rec.audio
Subject: Re: Bose AM-7
Date: 2 Sep 92 14:27:47 GMT
Organization: Cypress Semiconductor, San Jose, CA

In article <HcLgqB3w165w@flex.com> dcha@flex.com (Douglas Cha) writes:
>        I've heard the Bose AM-5's and were impressed despite the
>price tag of like $649.  The AM-7's are priced at $899 (?) but I

Oh no !! YARBB should follow soon.... (YARBB = Yet another round of
Bose Bashing)......

-Bapcha-
From: rmunk@daimi.aau.dk (Rasmus Munk Larsen)
Newsgroups: rec.audio
Subject: Re: How are speaker impedences specified?
Date: 1 Sep 92 07:47:35 GMT
Organization: DAIMI: Computer Science Department, Aarhus University, Denmark


   I certainly agree that most companies' impedance ratings are
highly misleading, if not absurd. The only reasonable way of doing
it would be to make a graph of the magnitude of the impedance
vs. frequency, and a similar of phase angle vs. frequency.
You find such measurements in most serious HIFI-magazines, 
when they are testing a loudspeaker.
(The impedance IS a complex number. The phase angle has a great 
influence on the amount of work your amplifier has to do. When
current and voltage are out of phase only a fraction of the power
is actually converted into acoustic energy by the loudspeaker and
therefore the amplifier has to work harder.)

                                               Rasmus Munk Larsen
					       AArhus
					       Denmark
					       Europe
Newsgroups: rec.audio
From: chris@lightnin.Columbia.NCR.COM ()
Subject: Re: Where can I find the Nyquest theorem
Organization: NCR Corp, E&M-Columbia, Columbia, SC
Date: Wed, 26 Aug 92 11:53:40 GMT

In article <1992Aug25.200552.12909@fcom.cc.utah.edu> dave@news.ccutah.edu (dave martin) writes:
>Where can I find the exact statement of the Nyquest theorem?  I have seen
>some articles attributing certain properties of digital audio to the Nyquest
>theorem which happen to be false.  I am trying to find out if the theorem
>is in error (unlikely) or if the author of the piece I read is wrong (more
>likely).
>
>dave@csulx.weber.edu
>DMARTIN@CC.WEBER.EDU

Nyquist has theorems in both the analog and digital domain.  With respect
to digital audio maybe the one you were referring to  is Nyquist's
minimum sample rate criteria.  For a sample to be accurately reproduced,
each cycle of the analog input signal (Fa) must be sampled at least twice.

            Fs >= 2Fa
               
  Fs = minimum sample rate (Nyquist)
  Fa = highest frequency to be sampled

if Fs < 2Fa, distortion will result--aliasing, foldover.

I am by no means an expert on this stuff.  I remember it from a Digital
Signal Processing class I took in school.  The mathematical proofs can be
found in any DSP book.




-------------------------------------------------------------------------
 Chris Landi                               
 Surface Mount Operations Center                 NCR MCPD -- Columbia
 phone: (803) 739-7364                           Operations & Distribution
   fax: (803) 739-7362                           3325 Platt Springs Road
 email: chris.landi@ColumbiaSC.NCR.COM           West Columbia, SC 29170
-------------------------------------------------------------------------

Newsgroups: rec.audio
From: trw@spl1.spl.loral.com (Tim R Witort)
Subject: Re: Sony CDP 570
Organization: Loral Software Productivity Laboratory
Date: Thu, 27 Aug 1992 19:01:27 GMT

In article <ceazqGm00UhW86vaY7@andrew.cmu.edu>, Eugene Kuo <ek1i+@andrew.cmu.edu> writes:
|>     I was wondering what any of you could tell me about the Sony CDP 570
|> CD player.

  I have that model (I think... it's the 5 CD changer, right? I tend to
forget the model numbers of the equipment after I buy them).
  Well, if it is the same... It's a 5 CD changer with the following 
features:

     Digital output - coaxial & fiber optic
     Variable line level outputs
     Remote control of just about everything (including volume)
     Lots of programming capability (more than you'd EVER want)
     Automatic recording capability with Sony decks
     Automatic CD track selection for optimum fit onto a cassette
     Usual play modes: shuffle, repeat, A-B, etc.
     Calendar track display
     Lots of other neat stuff

   I think I paid $300 for it new.

|>         eugene

-- Tim
From: wayne@ultra.com (Wayne Hathaway)
Newsgroups: rec.audio
Subject: More Pro-Logic receiver questions
Date: 2 Sep 92 14:58:58 GMT
Article-I.D.: ultra.1992Sep2.145858.29929
Reply-To: wayne@ultra.com (Wayne Hathaway)
Distribution: usa
Organization: Ultra Network Technologies

I have been following all the Pro-Logic receiver discussions with
great interest, since I am also in the market.  And based on last
night's investigations, I now have a couple of specific questions of
my own to add to the fray.

First, a friend recommended his Kenwood, so I checked them out.  And I
found with great surprise that both the 7040 and 8040 (presumably the
new versions of the 7030 and 8030) do *NOT* have S-Video connectors!
The 9030 *DOES*, but there doesn't seem to be a "9040" yet and I don't
think the 9030 has a center amp, which I did want.  Anyway, does
anybody have any comments on what appears to be an absurd oversight,
namely omitting S-Video capabilities from their newest products?

Second, while checking out the Denon AVR-810 and AVR-1010 the sales
droid happened to mention the 3000.  Yeah, says I, an older model that
has more power but no tuner.  (Smugly, I might add, since I was armed
with a printout of the recently-posted "FULL SUMMARY"! :-)  Huh, says
the droid?  It definitely has a tuner, and in fact is the brand new
follow-on to the 1010!  Puzzled, we looked at my printout and saw the
confusion: the posted summary commented on the AVC-3000, but what the
sales person was talking about was an AVR-3000.  (Note that AVC versus
AVR!)

Anyway, the AVR-3000 does indeed seem to be the follow-on to the
AVR-1010, and their prices were $700 for the AVR-810, $900 for the
AVR-1010, and $1300 for the AVR-3000.  Comments, anyone?

Thanks for all the past info and anything new that anybody can add.

    Wayne Hathaway               domain: wayne@Ultra.COM
    Ultra Network Technologies     uucp: ...!ames!ultra!wayne
    101 Daggett Drive             phone: 408-922-0100 x132
    San Jose, CA 95134              FAX: 408-433-9287
Organization: University of Maine System
Date: Friday, 4 Sep 1992 12:41:48 EDT
From: <IO10046@MAINE.MAINE.EDU>
Newsgroups: rec.audio
Subject: Polk Audio Monitors

    I have a pair of Polk Monitor 5a.  I was wondering if I could
replace the original tweeter with Polk silver dome tweeter?  Would
I have to change the crossover as well?  Should I just invest in
a new set of speakers?

-Aaron Brasslett
-Univesity of Maine
Organization: Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.audio
Date: Wed, 26 Aug 1992 17:54:26 -0400 
From: Eugene Kuo <ek1i+@andrew.cmu.edu>
Subject: Sony CDP 570

Hello,

    I was wondering what any of you could tell me about the Sony CDP 570
CD player.  I have the opportunity to get a used one and would just like
to know a few things about it before I commit.  Thanks!

        eugene
From: dtang@bass.bu.edu (yunfei zhang)
Newsgroups: rec.audio
Subject: Re: DAK's $149 Subwoofer
Date: 28 Aug 92 05:36:09 GMT
Reply-To: dtang@bass.bu.edu
Followup-To: rec.audio
Organization: Boston University

Thanks to all of you who answered my question about the DAK dbx
subwoofer. I ended up placed an order yesterday  I do hope it will
improve the sound quality, especially considering that I only have
a infinite reference II speaker which the woofer has to work extra
hard for the sub-bass (it is a two way speaker).

DMT
Newsgroups: rec.audio
From: philip@rous1.umbc.edu ()
Subject: Bi-Wiring
Reply-To: philip@rous1.umbc.edu ()
Organization: University of Maryland, Baltimore County
Date: Fri, 4 Sep 1992 15:01:35 GMT

Is their a technical reason why, in principle,  bi-wiring a 
pair of loudspeakers is better than single wiring? One speaker
manufacturer claims that bi-wiring separates the grounds of
the drivers. However, since the two speaker cables are joined
at the amplifier outputs anyway, I do'nt understand how this 
works?

Philip
From: borowski@hpspkla.spk.hp.com (Don T. Borowski)
Newsgroups: rec.audio
Subject: Re: Audiophile mastering of CD
Date: 25 Aug 92 18:01:14 GMT
Organization: Hewlett Packard Company, Spokane, Wa.

In rec.audio, chrisc@gold.gvg.tek.com (Chris Christensen) writes:

>I had an experience recently that has me quite concerned.  I listened
>to a CD that a friend had loaned me.  It was a CD of orchestral music,
>movie themes.  The music was recorded between 1954 and 1968 if I
>remember correctly.  This is a side fact,  all of the selections of
>music matched very closely,  a credit to the re-recording/mastering
>engineer.  That's the good part.
>
>The liner notes specifically noted that a particular brand of high-end
>speaker system was used for all monitoring during that production
>process.
>
>The problem is that the CD lacked clarity in the high frequency
>spectrum,  the low mids were flappy and the sound stage was mostly
>left/right only with very little middle sound from the center part of
>the orchestra......
>
>I may be outta line but if this is what I get when this type of
>monitoring is done then I don't want it!
>
>I played several other CD's and some of my own recordings from DAT to
>verify that my studio monitors were performing to their best, and they
>were.
>
>Anyone have an idea here?

You may be hearing the limitations of the source material.  Unless you are
using the very latest digital sound processing to restore the recordings,
you are stuck with using equalizers.  Given the age of the material, there
could be considerable amount of high frequency noise on the tapes.  So then
the engineer needs to balance high frequency response and high frequency
noise, and it seems that high frequencies were sacrificed to make the noise
levels acceptable.

The sound stage problem may be due to the recording techniques of the day,
which seemed to emphasize seperation over natural sound stage at times.
Some blending could be used to make the sound stage more natural, but then
this would not reproduce the original recording.

I don't know what you mean by "flappy" sound, so I can't comment.


Donald Borowski    WA6OMI    Hewlett-Packard, Spokane Division
"Angels are able to fly because they take themselves so lightly."
                                       -G.K. Chesterton
Newsgroups: rec.audio
From: Richard.Chalk@bbs.oit.unc.edu (Richard Chalk)
Subject: Equalizer/analyzer for sale
Organization: Extended Bulletin Board Service
Distribution: na
Date: Thu, 3 Sep 1992 20:26:05 GMT

I have for sale an ADC "Soundshaper" equalizer/spectrum analyser, model
SS-325X.  This unit is a 12-band graphic equalizer, with 4 memories, 
which memorize the settings for Left and Right channels separately.

It also has a 12-band fluorescent spectrum analyser, with +/- 12dB. range,
in steps of 2 dB.  There is a "Pink Noise" Generator, and a calibrated
microphone to do acoustic measurements.  This one does not do automatic
setup.

This was built by ADC in Newton, MA, before they sold out to BSR, and
ultimately to DAK.  It is well made, and in perfect shape.  It was sold
in 1989 by J&R Music World, for $269.95. 

I am asking for $150.00, but will consider offers.  Reply here, or
call 404-587-1613

Richard

--
   The opinions expressed are not necessarily those of the University of
     North Carolina at Chapel Hill, the Campus Office for Information
        Technology, or the Experimental Bulletin Board Service.
           internet:  bbs.oit.unc.edu or 152.2.22.80
From: chrisc@gold.gvg.tek.com (Chris Christensen)
Newsgroups: rec.audio
Subject: Re: How are speaker impedences specified?
Date: 2 Sep 92 21:42:48 GMT
Organization: Grass Valley Group, Grass Valley, CA

In article <183352@pyramid.pyramid.com> lstowell@pyrnova.pyramid.com 
(Lon Stowell) writes:
>In article <kJoeqB2w165w@tsoft.sf-bay.org> bbs.hew@tsoft.sf-bay.org 
(Harold Wheaton) writes:

>>Hmmm...talk about some real confusion!  I was hoping it would be 
>>"scientific" but maybe not! 
   
>      On rec.audio?  Shirley you jest!

I believe that the responses that Dick Pierce has provided to this
topic have bee suitably scientific!

Measuring impedance is so easy do like Lon suggests, measure it for
your self!

Just what *was* the original question?

-- 
Chris Christensen                  The opinions I express are my own,
chrisc@gold.gvg.tek.com            and sometimes they are wrong!
916-478-3419 FAX 916-478-3887      After all, I *AM* only human.
Newsgroups: rec.audio
From: airpreet@csd4.csd.uwm.edu (Sunny Singh or Airpreet)
Subject: WANTED: High Speed Dubber..
Originator: airpreet@csd4.csd.uwm.edu
Organization: University of Wisconsin - Milwaukee, WI
Distribution: usa
Date: Wed, 26 Aug 1992 03:45:08 GMT

hi.
	i am looking for a used high speed dubber..


-- 
-------------------------------------------------------------------------------
!! Sunny Singh ----------------------- airpreet@csd4.csd.uwm.edu ------------!!
-------------------------------------------------------------------------------
From: BARRON@RHQVM14.VNET.IBM.COM
Date: Mon, 31 Aug 92 16:28:50 EDT
Newsgroups: rec.audio
Subject: Yamaha DSP A1000
Reply-To: BARRON@RHQVM14.VNET.IBM.COM

 All,

   This weekend I built a subwoofer to finish out the Yamaha system.

   I bought a 'Blues' driver (A spinoff company from Stillwater - actually
 in the same town...same specs...little cheaper..oooops; less expensive).

   Put the driver (12") in a 4.6 cubic foot MDF internally braced 6 ton
 box (it sure seems that heavy).

   2in X 5 in port.
   fiberglass filled

   Powered by a bridged HK citation 17 amp (400W into 4 ohms mono) driven
 out of the sub out on the DSP A 1000.  This turned out to be way way way too
 high a xover freq.

   I then used a few coils on the speaker level side to xover 1st order at
 75 Hz....Ahhhhhh...much smoother.  I then put my old hafler preamp in the
 path to fine tune the level, etc...

   In my room, I now go down to 25-30Hz flat (Klipsch KG4 main).

   What an improvement......The sub is adjusted to be missed when off but
 not noticed when on like a good sub..

   By the way...It was originally under the TV stand, but when the picture tube
 started resonating, I moved it.

   This system (all..let me count them...8 speakers) is fantastic.  THX
 couldnt be much better...after all it lacks 2 of the channels and the
 soundfield processing.

 Take Care
 db



Organization: Advantis Network Engineering and Planning
Disclaimer: This reflects the poster's views, not those of Advantis
News-Software: Usenet 3.0
X-X-From: Dave Barron
From: enterprise.rdd.lmsc.lockheed.com (Darrell Merrick)
Newsgroups: rec.audio
Subject: Re: Need some DAT Advice
Date: 1 Sep 92 22:50:16 GMT
Organization: Lockheed

In article <1992Sep1.000127.18041@nmt.edu>, dcuddihy@nmt.edu (David Cuddihy) writes:
> 
> 
> Hey all,
> 	I'm going to be in the market for a DAT-player and I'm completely
> ignorant as to what's up in the market. My experience goes something like this:
> I rented a Casio DA-7(Which retails in the neighborhood of $700) to record a
> live performance. One of my friends did all the actual dealing with the piece
> of equiptment. <end of experience!>
> 	My main usage would be for home-studio style mastering purposes. I'd
> want it to be able to deal with 44.1KHz(and higher if this is a common feature)
> so if I were to master CDs from it at a later date, noone would die in a fit
> of hysterical laughter.
> 

I also have been looking around at DAT decks.  A main consideration is the 
analog to digital sampling rate.  As far as I know there is no consumer DAT
machine (such as the Casio) that can record analog at 44.1 kHz.  All 
professional models that I know of do not have this limitation - but 
professional models retail at $1500 and up.  All machines I know of can record
at 48 kHz, which is good, but if you want to master CDs you will need to do
sample rate conversion from 48 to 44.1.

The main sources of information I've found are the DAT buyer's guide in the
May 91 issue of Electronic Musician and the DAT Audio Gallery catalog (I don't
have the number here, but it's in any recent issue of Electronic Musician.

You will also want to consider if you need portability, and if you are willing
to compromise features and performance for portability.

If you want a portable, you should check out the TEAC, which was reviewed in 
the new issue of Home Studio & Recording magazine.  The gist of the review is
that it is probably the best consumer portable on the market for the price
(its sells for $850 in DAT Audio Gallery catalog).

---------------

Darrell Merrick
merrick@aic.lockheed.com
From: lstowell@pyrnova.mis.pyramid.com (Lon Stowell)
Newsgroups: rec.audio
Subject: Re: 1-beam vs 3-beam
Date: 2 Sep 92 19:35:12 GMT
Reply-To: lstowell@pyrnova.pyramid.com (Lon Stowell)
Organization: Pyramid Technology Corp., Mountain View, CA
Originator: daemon@sword.eng.pyramid.com

In article <1992Sep1.184143.29620@ntg.com> dplatt@ntg.com (Dave Platt) writes:
>
>- Three-beam designs are more complex, mechanically - they require a
>  sled (two rails) with a linear drive.  One-beam designs can use a
>  pivoting arm.
>
    Actually I'm surprised you don't see more pivoting arm designs.
    I'd expect some cross-pollination from disk drives.   

>
>So... why are three-beam designs used at all, if they're more complex
>and require more critical adjustments?  I'm not certain what the entire
>story is... but I've heard that patents and licensing are a real issue.
>It may be that it's less expensive (overall) to use a three-beam design,
>and adjust it carefully during manufacture, than to license the rights
>to use the one-beam design.
>
    Maybe it's easier to automate one type?  After all there must
    be SOME company immune to the speedometer mentality?
From: yeidel@tomar.accs.wsu.edu (Joshua Yeidel)
Newsgroups: rec.audio
Subject: Re: The Stamp Act and the DAT tax
Date: 28 Aug 92 19:06:21 GMT
Reply-To: yeidel@tomar.accs.wsu.edu (Joshua Yeidel)
Organization: Academic Computing Services, Washington State University


In article <1992Aug28.104536.24730@macduff.robots.ox.ac.uk>, tony@robots.ox.ac.uk (Tony Hague) writes:
|>From: tony@robots.ox.ac.uk (Tony Hague)
|>Subject: Re: The Stamp Act and the DAT tax
|>Organization: Robotics Research Group, Engineering Science Dept, Oxford, UK.
|>Lines: 8
|>
|>In article <MICHAEL.92Aug27165633@albert.bu.edu> michael@albert.bu.edu (Michael Chaplin) writes:
|>
|>>"Bush? Clinton? Hmmmm. 
|>>Is it too late to ask the British to take us back?"
|>
|>Oh, yes. Far too late. 
|>...You might be able to come to some arangement with the Japanese,
|>though.
|>

No need.  According to the responses I've been getting to my "where's
the political benefit" post, many people seem to think that the
Congress and the President have already come to an arrangement with
the Japanese -- "we'll tax 'em and pay you, you kick back to us."

Yes, it's nauseating.

--
Joshua Yeidel               | yeidel@tomar.accs.wsu.edu
Academic Computing Services | All standard disclaimers apply
Washington State University |   "Believe it if you need it, 
Pullman, WA 99164-1226      |     or leave it if you dare..."
509/335-0441                |         -- Robert Hunter
Newsgroups: rec.audio,misc.consumers
From: Vince@alchemy.tn.cornell.edu (Vince Koh Kia Keng)
Subject: Re: DAK mail order
Keywords: dak mail order safe 
Organization: Alchemy International
Date: Tue, 25 Aug 1992 19:19:57 GMT

In article <1992Aug25.134634.5639%jim.uucp@wupost.wustl.edu> mike%jim.uucp@wupost.wustl.edu (Mike Suter) writes:
>I am considering buying a DAK subwoofer, but obviously now may
>not be the perfect time as they are operating in chapter 11.
>
>Has anyone ordered from them since they filed?  Anyone have any
>idea when/if they might come out of Chapter 11?
>
>Thanks for your help
>Mike
>-- 
>mike%jim.uucp@wupost.wustl.edu

	I ordered the DAK dbx 'King of the deep' Subwoofer during Summer,
in the month of July.  It was a bit late so I called them up and they sent
me a letter of reassurance that it will arrive, and it did so in the next 
few days.
	In any case, I'm very pleased with it.  It is relatively big, but
IMHO, the bass that comes out of it warrants it's size.

-Vince
Newsgroups: rec.audio
From: DPierce@world.std.com (Richard d Pierce)
Subject: Re: question about speaker building
Organization: The World Public Access UNIX, Brookline, MA
Distribution: rec
Date: Thu, 3 Sep 1992 12:38:50 GMT

In article <1992Sep02.172828.7669@bmerh85.bnr.ca> shiv@bnr.ca (Shiv Naimpally) writes:
>There is a magazine called oddly enough _Speaker Builder_ (I think
>it evolved out of the _Audio Amateur) which is devoted to speaker
>building. Anyone have their address ?
>

Audio Amateur Publications
P.O. 494
Peterborough, NH 03458
(603) 924-9464

.

-- 
|                Dick Pierce                |
|    Loudspeaker and Software Consulting    |
| 17 Sartelle Street   Pepperell, MA  01463 |
|       (508) 433-9183 (Voice and FAX)      |
From: jpl1@Ra.MsState.Edu (John Patrick Lestrade)
Newsgroups: rec.audio
Subject: Re: Wanted: Info about Wholesale Connection
Date: 2 Sep 92 18:06:58 GMT
Organization: Mississippi State University

kester@mte.ncsu.edu (Dan Kester) writes:

>I don't know anything about Wholesale Connection, but things to watch out for
>in general are gray market goods, and whether the units carry a US
>manufacturer's warning.  Also be careful of promised delivery dates that keep

In that regard, I notice that Wholesale Connection says "...the
equipment carries a WC guarantee.." (paraphrasing).  Which probably
means greyness.  However, I have bought several pieces of grey goods and
have not been disappointed.

--
John Patrick Lestrade, PhD        
cnesta::lestrade
jpl1@ra.msstate.edu