HDTenEightyP/NetNews huggingface dataset:
From: mizutanit@wharton.upenn.edu
Newsgroups: rec.audio
Subject: Advice on a Pro-Logic Receiver
Date: 22 Jul 92 16:22:29 GMT
Reply-To: rec.audio
Organization: University of Pennsylvania

I'm planning on purchasing a new receiver soon and I would like to get a
few recommendations. I want a Dolby Pro-logic capable receiver, with amps
for all five channels, as well as the requisite audio and video switching.
I would also prefer to have a programmable remote.

The receivers I have seen so far are as follows:
Denon AVR-610
Yamaha RXV-650?
Sony STR-GX-67ES
Technics SXR-710?
Kenwood KRV-8030

I can spend about $350-500. Any suggestions/advice would be greatly
appreciated.

Thanks in advance,

Taka
From: barabbas@bach.udel.edu (Barabbas)
Newsgroups: rec.audio
Subject: cartridges
Keywords: fear of overlooking the faq
Date: 24 Jul 92 17:14:19 GMT
Organization: UDelaware, pillar and manna posse

i recently bought a technics turntable from a friend, and
the technics cartridge needs a stylus. after some
prelimary investigation, i figure that the odds
are better of buying a new cartridge.

now, the dilemia: what cartridge to buy?  i've only 
found 2 places (so far) that have cartridges:
the local mom-and-pop and j&r's catalog.  could
anyone *please* tell me what to look for in a turntable
cartridge? like: how much of a difference is between
the cheaper ones and the expensive ones, what names
are good and what names aren't, etc. specific
references to the aforementioned j&r catalog would
be wonderful. especially since i would much rather
have e-mail responses (i figure that no one else
really cares about vinyl any more  :-)

many many thanx in advance,
barabbas

p.s. all right, i also don't know the model number
off the top of my head. but, it's in that catalog
for ~$120.
Newsgroups: rec.audio
From: ingoldsb@cuug.ab.ca (Terry Ingoldsby)
Subject: Re: WARNING: Sound Techniques of Los Gatos
Followup-To: rec.audio
Summary: Proper measuring techniques must be used for audio equipment
Keywords: Measurement techniques
Organization: Calgary UNIX Users' Group
Distribution: ba
Date: Thu, 23 Jul 1992 23:35:01 GMT

I have nothing to say regarding the quality of service from Los Gatos, but
several comments on testing equipment.

  1) A scope (unless equiped with a frequency meter) does not work well
     for frequency measurements.  You will be lucky to get accuracy better
     than a few per cent in my opinion.  Complaining over 1% errors by use
     of a scope is probably not meaningful.

  2) Don't be tricked by measuring voltage.  Always convert to dB.  You may
     find that voltages can vary more than you think for almost immeasurable
     (or at least inaudible) dB.  Remember 6dB change means a doubling in
     voltage.  The scale is non-linear.  Convert to dB and see what results
     you get.

  - Terry Ingoldsby
    ingoldsb@cuug.ab.ca
From: Mike_Benna@mindlink.bc.ca (Mike Benna)
Newsgroups: rec.audio
Subject: Re: Four Channel vs. Five Channel Pro-Logic
Date: 25 Jul 92 00:50:01 GMT
Organization: MIND LINK! - British Columbia, Canada
Distribution: world

When I added my center channel speaker, the dialog become much easier to
understand than it was when running in Phantom mode.  I attribute this to a
combination of comb filter effects (which don't occur with a single speaker)
and that only the dialog is being reproduced in the center channel and the
sound track is mostly in the front speakers.

A center channel is desirable but not necessary.  You could leave it for an
upgrade option when you have more money available and still not be disappointed
with a ProLogic receiver.
--
     ---> Mike Benna, Vancouver, B.C., Canada
          MindSpan Technologies Corp. - Video Game Design and Development
INTERNET: Mike_Benna@mindlink.bc.ca

Xref: sparky rec.audio:10813 rec.video:9534
From: brown@vidiot.UUCP (Vidiot)
Newsgroups: rec.audio,rec.video
Subject: Re: Four Channel vs. Five Channel Pro-Logic
Date: 24 Jul 92 17:44:32 GMT
Reply-To: brown@vidiot.UUCP (Vidiot)
Distribution: na
Organization: Vidiot's Hangout

In article <1992Jul22.195001.20851@philabs.philips.com> sar@philabs.philips.com (Sidney A. Rosenzweig) writes:
<Is the center channel of Pro-Logic essential, or am I sacrificing little by
<using the phantom mode on my receiver and only using four channels?   In other
<words, will the effect of adding the center channel be as profound as say,
<adding the rear surround speakers?

I use phantom mode for the following reasons:

1. lack of funds to purchase a high quality speaker just like the left/right
   speakers.
2. lack of a place to put such a tower speaker in the center.
3. lack of an amp to drive the rear speakers if it was moved to drive the
   center channel.  Though in theory, both rear speakers coould be driven by
   one channel of the amp and the center speaker by the other channel.  But
   the load would be uneven.
4. The main reason...lack of noticing a problem with phantom mode, since I
   sit in the center area anyway.
-- 
      harvard\     att!nicmad\          spool.cs.wisc.edu!astroatc!vidiot!brown
Vidiot  ucbvax!uwvax..........!astroatc!vidiot!brown
      rutgers/            INTERNET:vidiot!brown%astroatc.UUCP@spool.cs.wisc.edu
                                   brown@wi.extrel.com
Newsgroups: rec.audio
From: carlwu@magnus.acs.ohio-state.edu (Carleton Wu)
Subject: FOR-SALE:  STAX SR-84 Headphones
Organization: The Ohio State University
Distribution: usa
Date: Tue, 21 Jul 1992 21:02:35 GMT


FOR SALE:            STAX SR-84 Headphones

                    -absolutely mint: only 1yr old with little use
                    -comes w/ SRD-4 speaker/headphone selector
                    -simply hook up to your amp outputs
                    -sounds superior to AKG, KOSS dynamic phones IMHO

                    ASKING:    $160. obo

P                   E                  A                  C                   E
88888888888888888888888888888888880888888888888888888888888888888888888888STATE
Carleton Wu        (614) 292-9874      or      carlwu@magnus.acs.ohio-state.edu
ALTERN8888888888888888888888888888888888888888888888888888888888888888888888888
Newsgroups: rec.audio
From: colosia@pepper.ra.anl.gov (MB Colosia RA/208/sd 9130)
Subject: Digital Coax, 1.5m, b/w cd & dat, <=$200: suggestions?
Organization: Argonne National Laboratory, Argonne IL
Distribution: na
Date: Wed, 22 Jul 1992 04:52:44 GMT


A good local hi-fi shop mentioned "PSS by David Hum" as an excellent
passive coax b/w my nad 5k & my denon dtr-2k.  I looked in my popular
references: tas, stereophile, hifi, audiophile ... nothing.

I'd appreciate hearing any info on locating said cable & experience.
Musical tastes: classical, jazz, mellow rock.  Prefer good soundstage
and well defined bass, forward in presentation but not too bright.

thanks,

mark colosia
argonne natl lab	wrk: 708-252-9130
argonne, il		colosia@salt.ra.anl.gov
From: curt@oasys.dt.navy.mil (Curt Welch)
Newsgroups: rec.audio
Subject: Compressed audio better than noncompressed?
Date: 24 Jul 92 14:50:39 GMT
Reply-To: curt@oasys.dt.navy.mil (Curt Welch)
Organization: Carderock Division, NSWC, Bethesda, MD

In rec.audio, MATGBB@LURE.LATROBE.EDU.AU (BYRNES,Graham) writes:
>I'm still surprised that if it is technically feasible to do as you say,
>Philips et al are playing about with PASC etc, which IS lossy,
>although perhaps not audibly. In fact, Pasc relies on the fact that only
>a small fraction of the bandwidth is audible at a given time to ditch the
>rest.

My guess is that you can probably do something like 8:1 loss free
compression on CD's but designing and building the hardware to do this
in real time is currently too expensive.

Also, using a lossy algorithm makes the format far more appealling to
the record companies - so it increases it's chance for success in the
market place.  The manufactures don't want the next format to go the
same way that DAT has gone.  They are trying to find a format that
everyone, including the record companies, will like.

But here's another angle I'm waiting for the marketing types to come up
with.  As I understand it, both the DCC and MD compression algorithms
eliminate some sounds based on the human ears ability to here them
because of masking effects.  That is, if you have two tones, close in
frequency, but one much louder than the other, it will mask out the
second tone.  Humans can't hear it even if it's there, so why record
it.

So my thought - if the compression algorthim is removing sounds that you
can't hear - instead of saying the algorithm is throwing away part of
the orignal recording (i.e. distoring it) - they should say that it is
cleaning the signal of unwanted noise.  Removing low level noise that
causes the non-linear speaker systems to distort the true high level
signals that you can hear.  The cleaner the sound, the better the
speakers will be able to reproduce it.  So, I'm just wondering when
people will start claiming that compressed audio sounds better than
non-compressed becauses it has been purified?

Curt Welch
From: 92marsh@gw.wmich.edu
Newsgroups: rec.audio
Subject: Rodel and Ad-com amps
Date: 29 Jul 92 13:36:28 EST
Organization: Western Michigan University
Summary: Rotel and Adcom amps
Reply-To: 92marsh@gw.wmich.edu
Keywords: Rotel Adcom Amp

         Greetings,
           I am looking to purchase a new amplifier.  I spent half of
         today comparing adcom to Rotel.  I found Rotel to be
         excellent, and I lean towards such a purchase at this moment. 
         The specific Rotel is the 100 watt integrated amp.  Does
         anyone have it?  How do you feel about it?  The adcom was a
         60 watt appliance which sounded excellent, but pricy.  I will
         be playing the new unit (whatever it happens to be) through
         Kef C-90 speakers.  If anyone has advice for something else
         to look at, please get in touch with me.  Don't mention
         Carver though: the sound is HARSH!  Carver seems to be for
         poeple who want to be attacked by their music.  Plus, those
         analog needle readouts may be cool, but I'd rather not pay
         for a gimick.
           I would like to keep this purchase under $700.

         Charles Marsh
         92marsh@gw.wmich.edu
From: MATGBB@LURE.LATROBE.EDU.AU (BYRNES,Graham)
Newsgroups: rec.audio
Subject: Re: 20 or 24 bit digital recording?
Date: 24 Jul 92 01:14:17 GMT
Organization: La Trobe University
X-News-Reader: VMS NEWS 1.22

In <1992Jul23.212018.16396@ccu1.aukuni.ac.nz> stuartw@ccu1.aukuni.ac.nz writes:
> >20 bit recording is only begining to appear in recording studios
> >producing the master copies.  The 20bit master MUST transfered to a 16
> >bit format as in the case of a CD.  The current technology (DCC omitted)
> >CANNOT handle the 20 bit format.  However the accuracy of the 16 bit
> >information on the CD may be truer to form when originating from 20 bit
> >master than from a 16 bit.
I dont know about accuracy, but consider taping with 20 bit. You don't
know precisely how loud things are going to get, so you set your max level
(say) 2 bits down from 0db (ie -12db). This should keep you safe from
clipping the adc. Even if you were wrong in the other direction (quieter
than expected), you still get 16 bit reolution. When you come to mastering
to 16 bit, you can transfer at a level that makes use of the full 16bit
range (which is enough, IMHO).

If you are recording direct to 16 bit, you either end up with less
than full dynamic range, or clipping on the recording.
                                                      
> ( ie:on audio data, you can EASILY get 1:8 compression NON-LOSSY ..
> anyone for an 8hour CD format??? )

News to me: Why is DCC so contentious at 1:4, and mini-disk admitted
(by Sony) to be inferior to CD at 1:5????
Graham B
> -------------------------------------------------------------------------------
> stuartw@ccu1.aukuni.ac.nz
> 
> 			>>>>In VI Where Available<<<<
> -------------------------------------------------------------------------------
From: rons@hpnmdla.sr.hp.com (Ron Stewart)
Date: Wed, 22 Jul 1992 17:06:48 GMT
Subject: Re: Mail order experience with J & R Music World?
Organization: Hewlett-Packard, Santa Rosa, CA
Newsgroups: rec.audio

I bought a Sony computer monitor from them about 4 months ago and was
totally satisfied with all aspects of the transaction. I was acting
on good inputs from other people so I can recommend them highly.
If you order, let us know the results.

Ron Stewart
Santa Rosa, Calif.

Newsgroups: rec.audio,sci.electronics,rec.woodworking
From: mlloyd@cbnewse.cb.att.com (michael.lloyd)
Subject: tapping in aluminum chassis
Organization: AT&T
Distribution: usa
Date: Mon, 27 Jul 1992 14:13:01 GMT
Followup-To: poster
Keywords: tap broke! removal?


I am building a chassis for an amplifier project from aluminum.
During tapping the holes in the side panels, I broke a tap off
inside a hole. I assume that a screw remover can be used to extract
these things. However, the tap is made of high carbon steel, which
you can translate as I don't think I have anything strong enough
to drill a hole into the tap to insert the screw remover.

So, what would you do? I have a dremel with assorted attachments,
a hand drill, and access to a drill press. Is a screw remover the
best way to get the tap out? Oh, by the way, I'd like to keep the 
hole intact, if possible!

Please send email (if you can) instead of posting so we don't clutter 
the network. I'll summarize and post the results if there is any interest.

Thanx!
Michael Lloyd
Newsgroups: rec.audio
From: jstimson@jarthur.claremont.edu (John Stimson)
Subject: Re: Need New CD Deck Recomendations!
Organization: Harvey Mudd College, Claremont, CA 91711
Date: Wed, 22 Jul 1992 15:25:25 GMT

In article <23270@alice.att.com> andrew@alice.att.com (Andrew Hume) writes:
>	i used the adcom whilst demoing speakers on the weekend.
>the user interface sucks. all the buttons are mono-sized and
>not well laid out. the sound was competent but i'd reject it
>on usability grounds alone.


OH NO!!!  The buttons are all the same size and I can't get used to the
controls after a couple hours - can't even consider this piece of equipment!

Most people who care about the sound of a player don't really care about
how the controls work.  Most of us can adjust to unfamiliar controls as
well.  Ever use an HP?  A bitch and a half to get used to, but once you
do, "Reverse Polish" works far better than the conventional notation.
Unless the Adcom is lacking something important like a play button, it's
not going to be inconvenient once you start using it.

Oh, and your message had no capital letters.  The grammar was competent
but I'd reject it on readability grounds alone.

							John Stimson
							Harvey Mudd College
Xref: sparky rec.audio:10969 rec.video:9709
From: sprocket@cbnewsi.cb.att.com (dean.s.jones)
Newsgroups: rec.audio,rec.video
Subject: Yamaha DSP1000 query + ( maybe ) NAD Amps for sale
Date: 28 Jul 92 16:49:29 GMT
Distribution: usa
Organization: AT&T


	I was thinking about buying a Yamaha DSP1000,  and if I buy the
A1000 I will probably sell my current Amp/Pre-Amp system, a NAD 2150  &
3150 ( bridged right now ).   I was thinking about buying the E1000 and
keeping my Amp/Pre-Amp,  but who needs two Pre-Amp units ???   I am not
quite sure how much I want for them,   but if someone makes a worthwile
offer...
	Is the DSP1000 available mail order ??? What is the going price 
mail order or retail ???
						Dean Jones
						AT&T Bell Labs
						Holmdel, NJ
						dean@hos1cad.att.com
From: collin@angelo.amd.com (Collin K. Ong)
Newsgroups: rec.audio
Subject: Re: Money to blow, need good AV receiver or component recommendations
Date: 29 Jul 92 19:35:55 GMT
Organization: Advanced Micro Devices, Inc.

markr@mot.com (Mark) writes:

>I want the Sony D2070 receiver. I WANT the Sony D2070 receiver. I REALLY
>WANT the Sony D2070 receiver.  The D2070 is the only receiver, that I know
>of, which operates completely in the digital domain and has at least one
>optical digital input.  All operations done on the signals are done
>digitally (read very low noise) except for D/A and amplification out to
>the speaker. (obviously)  My next system will include such a receiver, and
>I have prepared for that fact by making sure my CD player has an optical
>digital output. (non-optical would also suffice)

Cool, but does it sound better than well designed, simple analog separates?
From: seghers@hpcc01.corp.hp.com (David Seghers)
Date: Wed, 29 Jul 1992 17:11:13 GMT
Subject: HELP! Very noisy tape deck. Ideas?
Organization: the HP Corporate notes server
Newsgroups: rec.audio

Before I take my tape deck in for repair, I thought I would find out
if anyone has seen this problem:  One well of my dual well cassette deck
has suddenly gotten VERY noisy, even without a tape!  The level "meters"
for both channels max out, and all you can hear is a loud hum. Any ideas?
The other well works fine, so I know that the deck is fine downstream from
the tape mechanisms and at least half of the switching circuitry.

Thanks in advance!

David Seghers (seghers@hpcc01.HP.COM) 415-691-3730

************************************************************************
Solipsist Society, Founding Member  (I think, therefore you are.)

Charter member of the "I HATE vi Club!"
************************************************************************
The statements and opinions above are my own, entirely my own, and no one
else's.
From: MATGBB@LURE.LATROBE.EDU.AU (BYRNES,Graham)
Newsgroups: rec.audio
Subject: Re: DAT/CD Sampling Frequency: who cares?
Date: 27 Jul 92 06:35:53 GMT
Organization: La Trobe University
X-News-Reader: VMS NEWS 1.22


In <1992Jul27.033213.25987@trl.oz.au> tpearson@titan.trl.OZ.AU writes:

> chu@hanauma.jpl.nasa.gov (Eugene Chu) writes:
> > In article <5994@otc.otca.oz> brendan@otc.otca.oz (Brendan Jones) writes:
> > >in article <Jul08.171025.23033@yuma.ACNS.ColoState.EDU>, cc433336@LANCE.ColoState.Edu (Constantinos A. Caroutas) says:
> > >> Theory says that if you can sample at least twice per cycle, you can
> > >> recreate the signal exactly.
> > >
> > >No no no.  Not twice per cycle.  At least twice the highest *frequency*
> > 
> > I think the sampling frequency must be twice the BANDWIDTH of the signal
> > you're trying to sample.  Of course, Nyquist never said it would be easy.
> > 
> >
>  Stop the argument. These statements are all the same for a sinewave,
> and they are all obviously trying to infer the same thing.
> 
No, they aren't. The bandwidth of a sinewave is actually zero. If you KNOW
it is a sine wave of given frequency, you only need to calculate 
a) the phase and b) the amplitude. So you need precisely TWO samples. Ever. 
If you don't know the frequency, you need a third.
The bandwidth is the difference between the lowest and highest frequencies 
present. If there is no low freq component, the signal must precisely
repeat after a short interval, so you can spread your samples over its
repeats. For music (or anything with finite length), there are components down
to zero. So the bandwidth=max freq present.

But I agree the argument should stop.
Graham B
From: jcb (Jim Becker)
Newsgroups: rec.audio
Subject: Re: Life after CDs
Date: 27 Jul 92 18:54:11 GMT
	<Brr3A6.5IA@news.cso.uiuc.edu>
	<1992Jul23.041115.20377@bilver.uucp>
	<14mdkjINNb4m@grapevine.EBay.Sun.COM>
	<phil.712197423@adam.adelaide.edu.au>
Return-Path: <jcb>
To: postnews



the story about Beethoven's 9th is true. but  there  are  people  that
have compressed up to 5 1/2 hours  on  a  single  disk.  Personics  is
(was?) one such company. This music is available by purchasing  it  on
cassette at music stores (around here Wherehouse Records).  They  have
8x  speed  Nak's  that copy the music onto normal cassette tapes. This
comes from a jukebox of these CDs and some fancy hardware.

the problem with compressing that much music  onto  CDs  is  that  you
can't sell them that way. who would pay the $$$ for all the Beatles on
a  single  disk?   people  bitch  enough  about  paying for commercial
software on a $1 disk, you can imagine what would happen with music..

-jim



--
 -Jim Becker / jcb@ncd.com   /   Network Computing Devices, Inc. (NCD)
Xref: sparky rec.audio:10714 rec.video:9444
From: harvey@cafws1.eng.uci.edu (Harvey Chen)
Subject: Re: Four Channel vs. Five Channel Pro-Logic
Newsgroups: rec.audio,rec.video
Organization: University of California, Irvine
Date: 22 Jul 92 22:37:06 GMT
Distribution: na

	Yes, there is a DEFINITE difference in adding the center channel.  I
had regular Dolby surround for three years and just recently added a Dolby
Pro-logic processor to my system and the difference is amazing.
	Furthermore, when I just had Dolby surround, I sometimes had
difficulty hearing the dialogue.  Adding Pro-logic eliminated that.
	It sounds like you already have a Pro-logic processor, I would
recommend that you go and get a center channel speaker and hear for
yourself.

Harvey

Newsgroups: rec.audio
From: dcheenne@unlinfo.unl.edu (Dominique J. Cheenne)
Subject: Audio test equipment for sale
Keywords: test,sale
Organization: University of Nebraska - Lincoln
Date: Tue, 21 Jul 1992 16:15:54 GMT

Test Equipment for sale
-----------------------

1) Leader LSW500/LBO500 Frequency analyzer: 2 channels, 20Hz to 300KHz, large
monitor, precision generator with markers. Channel 2 storage, harcopy
capabilities, etc... Still manufactured by Leader. A new unit costs $7,500.00.
 This one is 6 years old,  in excellent condition, has manuals (owner +
service) and sells for $2,000.00.

2) Keithley 175A digital multimeter: 4 1/2 digits with autoranging, data
logging, references, conversion, etc... A precision instrument (bench type) in
excellent condition with all manuals. $300.00

4) GC5001 Frequency/period meter: 2 channels, 10 MHz range, with count,
interval, period, frequency, ratio, etc... with manual. $150.00

5) NLS MS215 oscilloscope: Miniature unit with 2 channels, 15 MHz.  Very small
(8" x 6.4" x 2.9"). Rechargeable batteries. With probes and manuals. $300.00

6) RCA WP707 power supply: 2x25V/2A. A wonderful unit, very reliable and
excellent noise performance. With manual. $200.00

7) Leader LM181 millivoltmeter: Precision unit for low level measurements. In
excellent condition with manual. $135.00

8) IQS FFT Analyser. Apple II based. Model 401 LX, 50 KHz with pulse generator
and built-in preamplifier. Complete with computer (2 floppies, monitor, etc..)
and all software. An excellent unit for loudspeaker investigation and basic
acoustical measurements. $900.00


Dominique J. Cheenne

dcheenne@unlinfo.unl.edu
(402) 474-2215
From: desmondw@merrimack.edu
Newsgroups: rec.audio
Subject: Bose 601's?
Date: 21 Jul 92 20:53:50 GMT
Organization: Merrimack College, No. Andover, MA, USA


     I seen these speakers at a local Fretters and they were big bucks.
I'm looking for a new pair of speakers for my receiver(Technics SAGX710)
and want an awesome pair of speakers that will rock the house and sound
good when watching movies. Any comments on the Bose 601's?
Newsgroups: rec.audio