HDTenEightyP/NetNews huggingface dataset:
From: twong@civil.ubc.ca (Thomas Wong)
Newsgroups: rec.audio
Subject: Re: Nakamichi 700 Cassette Deck replacement
Date: 6 Jan 1993 19:34:25 GMT
Organization: Dept. of Civil Engineering, U.B.C., Vancouver, B.C., Canada
NNTP-Posting-Host: sam.civil.ubc.ca

In article <27613@sybase.sybase.com> herb@sybase.com (Herb Lison) writes:
>I purchased a Nakamachi 700 deck a very long time ago, in the mid-70's,
>and used it to tape a large record collection.  I was always very 
>pleased with the deck and the tapes it made.  Sad to say, a thief made
>off with all of my equipment and I must now replace it.  I've made
>the round of the various stores with tapes and have been unable to find
>an equipment combination that makes my tapes sound as good as the old
>equipment did....

I would stick with Naks if I were you. They make one of the if not THE
best tape decks around. That's their way to fame and fortune. :)

Naks came out with a new line of model so if you can still find a local
stores that sells last year's model, go for it. I bought mine with a big
discount. Look for the Cassette Deck 1 or 1.5 (top of the line). You can
go for ones that are a lot more expensive (even with the Nak's original
pricing, ie. not discounted) but it won't get much better.

Stick with Naks. They are well worth their money. As you can probably
tell us yourself.

Thomas.

Newsgroups: rec.audio
From: grima@iphase.com (Gary Rima)
Subject: Re: How can different digital cables sound different?
Organization: Interphase Corporation, Dallas Texas
Date: Thu, 7 Jan 1993 19:23:50 GMT

In article <184819@pyramid.pyramid.com> lstowell@pyrnova.pyramid.com.pyramid.com (Lon Stowell) writes:
>In article <shetline-060193111942@128.89.19.85> shetline@bbn.com (Kerry Shetline) writes:
>>
>>Not understanding the technology makes it easier. There is much more room
>>for "magic" that way. But sometimes I think partial understanding is even
>>more dangerous. Yes, sometimes a 0 that is supposed to be 0 volts is 0.2
>>volts, and a 1 that is supposed to be 5 volts is only 4.7, but that does
>>not change the way digital devices respond to the information. Bits are
>>still bits. This is the kind of thing, however, that some people will try
>>to attribute nonsensical claims to.
>>
>    Yeah, a LITTLE knowledge can be really dangerous.  Particularly
>    when you expose it on the 'net.
>

Yep, you're absolutely right - as you're about to prove by direct example!

>    Most commercial circuits I know of a 0 is at least 0.7 volts or
>    more...as that's the saturation of silicon.

Apparently the commercial circuits you know don't include anything based on
CMOS logic, which is the basis for most modern LSI circuitry.  0.7 volts is
not the "saturation of silicon".  Rather, it is the saturation voltage (base-
emitter junction voltage) of a silicon junction transistor.  A (silicon)
MOSFET transistor as used in CMOS circuitry typically swings almost
rail-to-rail (from about 0.2 volts to about 4.8 volts) as opposed to the 0.7
to 2.8 volt swing which is more typical of TTL style logic.


-- 
Gary L. Rima						Interphase Corp.
PP-ASEL-IA						(214) 919-9226
Centurion N7358E					grima@iphase.com
N0GR							CompuServe 76050,231
Newsgroups: rec.audio
From: mjv8557@eafs000.ca.boeing.com (Mark J. Vandiver)
Subject: Re: Sony Vs Mitsubishi VCRs
Organization: be41t
Distribution: na
Date: Mon, 4 Jan 1993 21:30:01 GMT

normanw@cs.concordia.ca (WOO norman) writes:

>Hi folks

>I'm in the market to purchase a VCR.  My choices have been narrowed down to 
>either the Sony SLV-696HF ( $649.00 up here in Canada ) or the Mitsubishi
>HS-U57 ( $629.00 Canadian ).  Can anyone out there recommend one or the
>other?

>Another question...  I'm also looking for a new cassette deck.  Right now
>I have my eyes on the AIWA AD-F800 ( AD-F810 in the USA ).  The lowest price
>I've seen for this model up here is $399.00.  Again, can anyone recommend this
>or another model within the same class/price range?

I have two Mits VCRs and love them both! I have a 52 and an 72? anyway one is SUper Vhs
I have had no problems with them, as I had with other brands, and simple, easy to
use programming and operation. Get the Mits!

>Thanks very much in advance.

>My e-mail address is normanw@.cs.concordia.ca
>or
>woo@bnr.ca

>Norman
From: al@qiclab.scn.rain.com (Alan Peterman)
Newsgroups: rec.audio
Subject: Re: A receiver as a wake-up alarm?
Date: 7 Jan 93 16:56:35 GMT
Organization: SCN Research/Qic Laboratories of Tigard, Oregon.

In article <1igcvmINN3k5@news.umbc.edu> rouben@math9.math.umbc.edu (Rouben Rostamian) writes:
>
>Is it possible to use a stereo receiver as a wake-up alarm?
>
>I have a Nikko receiver with remote control in my bedroom.  It seems
>not too far-fetched to imagine a generic, inexpensive bedside alarm
>clock that will send a signal to the receiver to turn it on at a preset
>time.  Does such a device exist, or did I just give away an idea that
>will be the invention of the decade? :-)

Get the Memorex or Radio Shack universal remote.  They have a clock/timer
built in and can execute "sequences" of cammands at preprogrammed
times.  Easy to make a sequence of turn on, set FM, set channel...or
even turn on, set CD, start CD if you wished..


-- 
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!
Newsgroups: rec.audio
From: rtr@cbnewsc.cb.att.com (ricardo.t.rollins)
Subject: Home Theatre Speakers
Organization: AT&T
Distribution: usa
Date: Fri, 8 Jan 1993 20:13:58 GMT
Keywords: Good speakers for a Home Theatre System

Netters,

I'm new to the Home Theatre game and had a few questions about speakers.
I have a Pioneer VSX-701S Receiver, a Digital NEC Stereo VCR (will soon
be getting a Laserdisk player), and a Sony Big Screen TV. Now what I need
are some decent speakers.

I've seen (and like the sound of) the AM5-II from Bose, but they're a little
more than my budget can stand right now especially if I have to try and
match up some surround sound speakers with them. I saw a subwoofer/satellite
system from Pioneer (the SV-401K) that made my pocket book scream for joy.
I would like any impressions of those speakers as well as others people
like/disklike.

Besides being used as Home Theatre speakers, they'll be used to listen to
Jazz (mostly), R&B, some Classical. So I guess the biggest requirement
is that they deliver accurate Jazz/Classical sound reproduction, and can
double as a good set of Home Theatre speakers.

I realize that speaker sound quality is subjective to the listener, but I
would like to know what's out there worth considering. I will definitely
listen to any speakers I buy before I buy them. All help would be greatly
appreciated.

Thanx in advance.


--------------------------------------------
		Ricardo Rollins
		AT&T Bell Laboratories, CB 1E-215
		(614) 860-2144 (x2144)
		cblph!rollins or rollins@cblph.att.com

Newsgroups: rec.audio
From: tk11957@medtronic.COM (Tim M. Kunau)
Subject: Magnepan SMGb for $690, high?
Summary: Looking for SMGbs for a fair price.
Keywords: Magnepan, Magnaplanar, SMGb, pricing
Organization: Medtronic, Inc.
X-Newsreader: TIN [version 1.1 PL8]
Date: Mon, 4 Jan 1993 16:05:37 GMT


Magnepan speakers are made in town, but only sold through "authorized
dealers". What is a fair price for a new pair of SMGb speakers? The
only local dealer is asking $690 and I would like to keep it under $600.

What do they go for in your area? Can you suggest any dealers in your
area that might have a better price?

Thanks for any help,

Tim
--
----------------------------------------------------------------------
| Timothy M. Kunau                        Bradycardia Pacing Net-Ops |
----------------------------------------------------------------------
| Internet: tim.kunau@medtronic.com       Medtronic, Inc.            |
| UUCP:     uunet!medtron!tk11957         MS-T480                    |
| AT&T:     +1 612/5743850                7000 Central Avenue NE     |
| FAX:      +1 612/5746177                Minneapolis, MN 55432      |
----------------------------------------------------------------------
| "Computers are useless. They only give you answers."  - Picasso    |
----------------------------------------------------------------------
From: allana@hpmwtd.sr.hp.com (Allan Armstrong)
Date: Thu, 7 Jan 1993 18:20:36 GMT
Subject: Re: How can different digital cables sound different?
Organization: HP Santa Rosa Site (SRSD MWTD)
Newsgroups: rec.audio

lstowell@pyrnova.mis.pyramid.com (Lon Stowell) writes:
>In article <C0DCtn.4vL@CAM.ORG> pascal@CAM.ORG (Pascal Gosselin) writes:
>
>>Rise and fall times have to do with TRANSISTORS, NOT CABLES!!!!
>>
>   Go measure a LAN at the transmitter....measure it again at the
>   far end of the max cable.  Write a 1,000 word thesis that
>   explains the difference in rise times at the transmitter and
>   receiver being due to all the transistors in the cable.

Pascal's got it right. Sure, there are dispersive effects, but these are
irrelevant at CD bit rates.

I can walk over to lab stock grab a 1 m cable with SMAs on both ends and
pass 10 GB/s (yes, 1000 times more data than CD) and EASILY get a bit
error rate below 10e-9. And this is with a $30 cable that goes to 26 GHz
and performs better than any $300 audio cable. Of course it doesn't look
as pretty and isn't marketed as cleverly.

Sure, there is a dispersive effect in cables due to skin loss. The
cables I'm working with show a pole zero doublet which gives loss
increasing with frequency to about 1 dB at 1 GHz where it flattens out
for most of the rest of the band. Such an effect causes a ~5%
instantaneous undershoot with a recovery time of about 1 ns. This can
cause some very minor intersymbol interference (jitter) but this can
typically be corrected to far in excess of 10e-9 with a simple decision
circuit clocked by a timing recovery circuit. Since CDs operate at a
fixed frequency, such a circuit would be trivial to build compared to
the stuff they're building for SONET, but it would probably still be
unnecessary. (SONET systems have far more jitter than the cables
produce, yet a retiming circuit can correct jitter to far in excess of
10e-9 or 10e-12.)

And even if you still believe you need a $300 cable, I ask you this:
What kind of cables are used inside the transport and D/A to connect
between the connector on the back panel and the circuit board? Are they
$300 cables? If not, the "quality" of the system will be limited by them
and not by your $300 wonder cable.

Allan
Newsgroups: rec.audio
From: slr3e@Virginia.EDU ("Stacy Lee Roach")
Subject: Re: How Hear This Opinions
Organization: University of Virginia
Date: Sat, 9 Jan 1993 22:16:21 GMT

garyp@rmtc.unisys.com  writes:
> Hey Now Everybody,
> 
>     I would like to hear opinions on Now Hear This speakers, subwoofers,
> and amplifiers.

	I absolutely love their speakers.  They are by far the
best speakers that I have listened to in their price range.  
I bought a pair of the 1.8's last January and they never cease to 
amaze me.  They have very tight bass and plenty of it.  The
highs are stunning.  I am thinking about selling my 1.8's 
and grabbing a pair of the NHT 2.3's.  ( There is no real
reason for the trade up but I just can't resist the temptaion
to spend money) If your interested in buying a used pair
respond by PC mail.  But whatever you do make sure you pick up
a pair somewhere soon.  You won't regret it.
				
					SLR3e@Virginia.edu
Newsgroups: rec.audio
From: roth@3d.enet.dec.com (Jim Roth)
Subject: Re: How can different digital cables sound different?
Organization: Digital Equipment Corporation
Date:  7 JAN 93 11:38:34    


In article <shetline-070193101041@128.89.19.85>, shetline@bbn.com (Kerry Shetline) writes...
>In article <1993Jan6.215347@trc.amoco.com>, znpt01@trc.amoco.com (Norman P.
>Tracy) wrote:
>> ...

>> 10. Then comes a certain group of audiophiles who declare digital audio by
>> its very nature is already perfect.  They agrue this point using a selected
>> subset of the facts and tenuous analogy to other usually purely digital
>> technologies.  Their belief system includes a form of audio egalitarianism
>> which has latched onto digital audio as a means to bring ultimate hi-fidelity
>> down to the lowest common denominator.  Anyone questioning this belief system
>> is to be labled self-delusional or a charlatan and immediantly challenged to
>> a duel in the form of an ABX test.

(Mr Tracy sounds like a faithful TAS reader...)

And what is the problem with an ABX test?  If some effect, such as clock
jitter, is such a problem that it has deserverd the reams of verbiage
written on it, then surely it will be a simple matter to demonstrate
how clearly audible it is, no?

The real reason for the singular fixation that the tweako magazines have
on this clock jitter thing is that they've simply had to come up with
*some* justification for some of the soft headed trash they've published
such as green magic markers, CD damper rings on the edge of CD's,
or Armour All treatments and the like.  Now that they've "discovered"
clock jitter there will be simply no end to it and it will be milked
for all its worth.

Clock jitter is simply the fashionable source of distortion this decade.

Anyone can settle the issue for themselves by simply notching out a
sinewave from a test CD and listening to the residual.  One will
find that the resulting crud consists of harmonics, beats with the
sample clock, quantization noise and the like.  Artifacts that
*far* outweigh the supposed effects of clock jitter. Try it with
different digital cables, green magic marker painted on the CD,
clamps around the CD transport, anything you like.

This kind of test isn't rocket science; a twin tee notch filter can
be built inexpensively with readily available parts, even for example
from Radio Shack.

- Jim
From: mbk@lyapunov.ucsd.edu (Matt Kennel)
Newsgroups: rec.audio
Subject: Re: How can different digital cables sound different?
Date: 6 Jan 1993 23:09:52 GMT
Organization: Institute For Nonlinear Science, UCSD
Distribution: world
NNTP-Posting-Host: lyapunov.ucsd.edu
X-Newsreader: Tin 1.1 PL3

kuusama@kaarne.cs.tut.fi (Kuusama Juha,,,,) writes:
: It is quite simple to measure the error rate of a CD. In about all situations
: (undamaged disk, working player) the rate is 0. No errors and yes, bits are
: bits, so about any cable can transfer the numbers absolutely right.
: 
: On the other hand, different digital cables do sound subtle different in
: suitable conditions. This can be (and has been) reliably ferified in double
: blind tests. So there is a reason to ask the question on the subject: line.
: 
: I will not reveal the answer here (too easy and discourages intelligent
: thinking) but I'll give a hint. TIMING of the bits is also important for the
: outcoming sound, and is transferred in analog form from the digital
: source. There is no crystal at the receiving box.

The question is, what reproduces the clock signal on the receiving
end of the digital link?

Considering that it's supposed to be absolutely periodic, I can't imagine
any competent designer triggering on some "instantaneous" measurement
off the digital cable, and calling that the clock.

Rather, have an intrinsic clock going at a very regular rate and adjust
that only slowly to account for drift in the incoming signal, say with
a Kalman filter.

Come to think of it, isn't that what a phase locked loop is?

: --
: Juha

--
-Matt Kennel  		mbk@inls1.ucsd.edu
-Institute for Nonlinear Science, University of California, San Diego
-*** AD: Archive for nonlinear dynamics papers & programs: FTP to
-***     lyapunov.ucsd.edu, username "anonymous".
Newsgroups: rec.audio
From: palane@iastate.edu (Paul A. Lane)
Subject: Re: Stereophileeeeeeeeeeeeee
Organization: Iowa State University, Ames IA
Date: Tue, 5 Jan 1993 07:50:17 GMT

In <1993Jan5.025307.20656@leland.Stanford.EDU> kong@leland.Stanford.EDU (Kong Kritayakirana) writes:

>Stereophile doesn't have Rodriguez. He's a lot more entertaining than CG IMO, 
>although I find pretty much everything else (except maybe their classified 
>ads) in Stereo Review useless.

An interesting sidenote. For a little while, Rodriguez was doing cartoons
for MacWeek. Unfortunately, it didn't last for long. Sigh...

Paul
Newsgroups: rec.audio
From: monta@image.mit.edu (Peter Monta)
Subject: Re: How can different digital cables sound different?
Organization: MIT Advanced Television Research Program
Date: Tue, 5 Jan 1993 17:30:19 GMT

DPierce@world.std.com (Richard D Pierce) writes:

> The only figure that is acceptable to our customer base is an error free
> rate of precisely 100.000000000000%. nothing less is acceptable. We've
> spent literally tens of thousands of hours making sure the system achieves
> and maintains that spec.

I take it you mean <10^-12.  Users who require perfection will
presumably be disappointed.

> As someone else pointed out, while errors coming of the media are
> corrected for, that's not necessarily true of transmission errors. From my
> own experience, less than optimum cables that had pretty horrific
> microphonics problems would cause very audible errors on an outboard DAC I
> was reviewing. Simple acoustical pickup was enough to trigger it. In some
> cases the DAC lost synch and went into SAFE mode. Simply swapping the
> cable was sufficient to remove all audible effects.

Good heavens.  At impedances of 100 ohms or so, microphonics should be
down in the millivolts---something must have been really wacky
with the cable (or loss very high, so receiver has only a small
signal).

Peter Monta   monta@image.mit.edu
MIT Advanced Television Research Program
From: dcheenne@unl.edu (Dominique J. Cheenne)
Newsgroups: rec.audio
Subject: Test & audio equipment for sale
Date: 12 Jan 1993 20:53:34 GMT
Organization: University of Nebraska--Lincoln	
Distribution: world
NNTP-Posting-Host: unlinfo.unl.edu
Keywords: test,audio

Audio Equipment for sale
------------------------

1) Fosgate 3601 Series II Dolby Surround processor with internal amplifiers
with extra low level output added. Excellent condition. $180.00

2) dbx I BXIII Dynamic Expander. Mint, in box, manuals, warranty card. As good
as new. $100.00

5) QED tape switcher. 2 inputs. Excellent. $30.00


dcheenne@unlinfo.unl.edu


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 (ologging, 
references, conversion, etc... A precision instrument (bench type) in
excellent condition with all manuals. $180.00

4) GC5001 Frequency/period meter: 2 channels, 10 MHz range, with count,
interval, period, frequency, ratio, etc... with manual. $130.00

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. $240.00

6) RCA WP707 power supply: 2x25V/2A. A wonderful unit, very reliable and
excellent noise performance. With manual. $180.00

7) 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. $750.00. Pay shipping for the whole package and get
an Amdex color monitor for Apple II at no charge!


Dominique J. Cheenne

dcheenne@unlinfo.unl.edu
(402) 474-2215
From: kirk@hpcc01.corp.hp.com (Kirk Lindstrom)
Date: Sat, 9 Jan 1993 03:05:47 GMT
Subject: Re: Velodynes
Organization: Shredding the water of SF Bay, HP-OCD
Newsgroups: rec.audio

I believe the major difference is the ULD-12 has a better amp than
the F-1200.

Kirk out
Newsgroups: rec.audio
From: "dave dickson" <dave.dickson@canrem.com>
Subject: how to make cd output ok
Reply-To: "dave dickson" <dave.dickson@canrem.com>
Organization: Canada Remote Systems
Distribution: rec
Date: 11 Jan 93 02:59:35 EST

>I'd like to use the line-level output from my CD player as input to my
>amp's "Phono" selection.  I've heard that this can do damage, since


      Hi Alan;

             I did what you wanted. I modified my reciever by by-
passing the phone preamp stage. Because it was solid state, I removed 
the phono preamp IC and lifted the resistors going to the selector 
buttons. I also lifted the resistors going to the phono jacks. Then all 
that I had to do was to connect the jacks to the push button switches 
and I had another line input. I don't know if this is any help, but 
just an idea. Good luck.


>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>DAVE<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

 * 1st 1.01 #939 * The difference between doing it and not doing it is doing it
--
Canada Remote Systems  - Toronto, Ontario
World's Largest PCBOARD System - 416-629-7000/629-7044
From: creatch@carson.u.washington.edu (Lars Gilstrom)
Newsgroups: rec.audio
Subject: WANTED: older Magnavox CD Player
Date: 4 Jan 93 20:39:56 GMT
Distribution: na
Organization: University of Washington, Seattle
NNTP-Posting-Host: carson.u.washington.edu

I am looking for a Magnavox CDB-460 or 465 or 650 working or not.
I'm mainly looking the parts on the main board. Please send info
and your asking price.

Thanks,
Lars
From: bp816@cleveland.Freenet.Edu (Stuart Krivis)
Newsgroups: rec.audio
Subject: Shadio Rack
Date: 6 Jan 1993 17:18:58 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: slc10.ins.cwru.edu


I buy things at Radio Shack. Their batteries are fresh and they
carry small quantities of parts. Most of their products are of
standard quality, with some at the low end. If I need 1 resistor,
I go to the Shack. It isn't worth driving to a regular parts
store. Also, I can take my meter and select the exact value I
want and nobody says a word. Parts stores may not be so happy to
let you paw through their stock for a $3 purchase of parts.

The Minimus 7 speakers are pretty good at the sale price. Most
of their equipment is expensive for what you get. However, they
do stand behind their products. I have never had any problem
returning a product if I didn't like it.

Yesterday I spent several hours playing with the new DCC recorder.
I felt no pressure to buy. None of the local hi-fi salons or
appliance stores are this accomodating. They will change the
batteries in your flashlight if you ask them to! Other salemen
could learn a lot from Radio Shack. The clerks may not always
know much, but they always seem to have time for their customers.

There are a lot of things that I wouldn't buy from them, but it
has nothing to do the quality of their service.
Newsgroups: rec.audio