HDTenEightyP/NetNews huggingface dataset:
From: syd@en.ecn.purdue.edu (Dennis P Hilgenberg)
Newsgroups: rec.audio
Subject: Re: Optimization dilemma...
Date: 20 Dec 92 20:18:07 GMT
Organization: Purdue University Engineering Computer Network

Bruce Gan writes:

>Here's the scenario - I have a Nak CR-3A deck with Dolby B and C, and
>an Eq switch for 120us and 70us.  I have so far been recording on
>chrome TDK SAX tapes with Dolby C and at 70us with excellent results.

The Eq switch doesn't affect the recording, only playback.

>My car deck has Dolby B and I think it plays everything back at 120us.
>Unfortunately it also selects the tape type automatically and reads
>my chrome tapes as metal.  Because of this, normal tapes actually sound
>better on my car deck than chrome ones.

If the deck selects the tape type, it is in effect choosing between
120us and 70us equalization.  So the first sentence and the second 
are contradictory.  Both chrome and metal tapes utilize the same 
(70us) equalization, so your car deck is not misbehaving.

>I'm going to get my deck optimized real soon and I'm not sure which tape
>to optimize to.  Do I start buying metal tapes and record them at 120us
>and Dolby B?  Do I buy normal tapes (optimize my deck to NORMALS!?!?)?
>Do I optimize to chrome tapes and buy separate normal tapes for my car?

Are you going to "optimize" for both recording and playback?  Again,
it makes no sense when you talk about recording "at 120us."  Presumably,
this optimization involves calibrating your azimuth alignment to a 
standard tape, which is pretty much independent of tape type.  Are
you also going to adjust calibrations for Dolby and record bias?

In any case, the probable cause for your dissatisfaction is a
mismatch in azimuth alignment between your home and car decks,
and, except by trial-and-error attempts to match the setting on
your car deck by adjusting your home deck, you will probably need
to adjust the alignment on the car deck as well.

Keep in mind that changing the alignment on your home deck will 
cause recordings made on that deck in the past to sound bad when
played back after the adjustment is made.

-- 
Dennis P. Hilgenberg
syd@ecn.purdue.edu
Newsgroups: rec.audio
From: bower@pecan.cns.udel.edu (Ty Bower)
Subject: Re: Summary of "How to tape a 1h radio pgm" and deck maintenace Q's...
Organization: University of Delaware, Newark
Date: Sun, 20 Dec 1992 06:18:24 GMT

In regards to the "residue-free flurocarbon based cleaning
fluid,"  Radio Shack sells such an elixir.  I used to have
a bottle of the stuff, but it seemed to just evaporate over
the space of a year or so - even with the cap tightly on.  It's
volitile stuff.

I believe they called it their "Professional Cleaning Fluid"
with a magical juice named Freon TF.  It might have been sold
along with a couple of lint-free foam tipped plastic wands
for applying/wiping the stuff on.
From: peter@miller.cs.uwm.edu (Peter J Diaz de Leon)
Newsgroups: rec.audio
Subject: MDD Players are now for sale!
Date: 13 Dec 1992 17:12:00 GMT
Organization: University of Wisconsin, Milwaukee
Distribution: usa
NNTP-Posting-Host: 129.89.9.13

I am not sure anyone is aware of this but a
local electronics chain (BEST BUY) has MDD
players and recorders for sale. $700 for the
player recorder and $500 for just the player.
Both are made by Sony and appear to be the same
size as a current portable CD player.  
I plan on going to see them this afternoon.

peter
From: curt@oasys.dt.navy.mil (Curt Welch)
Newsgroups: rec.audio
Subject: Re: I just tested DCC and MD...
Date: 15 Dec 92 15:34:29 GMT
Reply-To: curt@oasys.dt.navy.mil (Curt Welch)
Organization: Carderock Division, NSWC, Bethesda, MD

In rec.audio, amc@wucs1.wustl.edu (Adam Costello) writes:
>Discs are more durable (the read/write head doesn't touch them, and
>they aren't susceptable to magnetic fields).

The magnetic head used in recording does touch the media in the MD.
But this isn't important, because unlike tape, the part that it's
touching (the top) doesn't effect your ability to read it.

>I estimate that you could
>then fit 12 MDs in the space of one CD.

Actually, the number is a little less than 8.  The MD is almost exactly
half the thickness of a CD jewell box (3/16"), and about 1/2 the width
and the height.  The MD I have has the album title printed on the edge
so you could even stack them up on a shelf like CDs and still read the
titles off the edge (if you have good eyes.)

>If you only like 1/3 of the
>songs in your CD collection, then copying them to MD will result in
>a 36:1 space-savings.  I find this exciting!

Me too.

>>ps.  Incedentally, DAT prices (for media and machines) are cheaper than for
>>DCC and MD.
>
>Really?  MD recorders are being introduced at $700.  Where can I get
>a DAT recorder for that price?

Lots of places.  If you want specifics, let me know, I'll get them for you.
Thouth many DATs are closer to the $800 range, some sell in the $500 to $600
range.

It won't be long however before the MD recorders are cheaper than the
DATs.

Curt
Newsgroups: rec.audio
From: dtt@cbnewsc.cb.att.com (david.t.townsend)
Subject: Re: Magneplanars again...
Organization: AT&T
Distribution: na
Date: Tue, 15 Dec 1992 00:22:36 GMT
Keywords: Maggies

In article <529@bit.UUCP> grego@bit.UUCP (Grego Sanguinetti) writes:
>In article <sikorsky.724086181@ee.ualberta.ca> sikorsky@ee.ualberta.ca (Mike Sikorsky) writes:
>>As I mentioned to John, the bass response is something I'm concerned
>>about; placement is absolutely critical? (I would think so)
>>
>Yes, subwoofers are advised when you can, especially with the SMGa's. The bass
>is there and sounds good but not as rich as a good box speaker bass CAN be.
>Being a bass player, I am particular to the bass sound!

The bass improves a lot with use, and placement is critical to achieve
good bass. With the right placement, the bass can be quite good on
the 2.6Rs. An article I obtained in preprint (submitted at JAES)
suggests that planar speakers should be placed according to the
1/3 rule, i.e. the speakers one third of the way into the room
from the front) and the listener two thirds of the way from the
front wall. This matches my own experience and the results of
lots of experimentation in my room. Unfortunately, it's a rare room that can
be set-up and left in this configuration. You'll need to try lots of
locations to find the best for your room and layout. I ended up
using two locations for the speakers; one for appearance and one for
critical listening.

I experimented with several quality subwoofers, and didn't find any
that were a good match to the Maggies. 

>>Hmmm...what else...Well made?  Good product for the money? 
>
>Mine are well made, great product for the money (bang for buck is their biggest
>feature).

I was pleased with the quality of construction and the sound. The company
also has a reputation for backing their products.

>>Would Maggie owners ever consider going back to box/cone designs?
>
>I'm currently hooked on planner type speakers for my stereo and video system.
>Of course not for musical or sound reinforcement applications.

I recently replaced my Maggies with a box/cone speaker. The problem
was the low SAF (Spouse Approval Factor), not the sound. In terms
of the sound, I found that they seemed to come on a little too
strong at around 1.5K Hz and approx. 4K Hz. with certain material.
This was not a problem with well mastered material in general.
Also, the dynamic range is a bit compressed. On the other hand,
the transient response was great! Overall, I was pleased with
the speakers.

It is possible to go back to a box/cone design from Maggies and
be happy. Of course it helps if the switch is to Thiel CS3.6s....

Dave T.


Newsgroups: rec.audio
From: bower@pecan.cns.udel.edu (Ty Bower)
Subject: Re: Doc, Doc, my CD player can't locate the tracks
Organization: University of Delaware, Newark
Date: Thu, 17 Dec 1992 22:37:20 GMT

Ed:
 
You write:
 
>to do is remove the cover and look at the circuit board. There will be a
>"screwlike" device. You turn it just like a screw and it regulates the speed
>at which the cd turns. Play the cd you want to listen to and turn the screw
 
I was under the impression that 4-7 yr old CD players that are
experiencing the tracking difficulties described in the original
article were suffering from a dimming laser unit that slowly
burns out with age.  Turn that little screw doesn't alter the
speed at which the disk spins, it increases the voltage supply
to the laser unit.  This increases the output of the laser back
to the point where it can properly track the disk.
 
Most of the CD players tracking capailities are controlled by
servo-like feedback mechanisms.  There are several different methods,
but one method for "staying on track" involves splitting the beam
into one main beam and two smaller spots which ride along on
either side of the track.  If the tracking spots ride too far to
one side or the other, they'll pick up the adjacent track, the pick-up
mechanism will detect this, and the logic circuitry will adjust
accordingly.  If the laser ages (they don't last forever, ya know :-)
these tracking spots will be too dim to be detected and the thing
goes loose.
 
Cranking up the voltage supply will bring it back into tolerance, but
at the expense of accelerated decay of the laser.  Of course, if
it was unusable before, and your tweaking has made it functional
again, I suppose you've done "a good thing(tm)."  However, the time
to complete failure has now been shortened.
 
Of course, not all CD players use the same tracking mechanisms.
Perhaps some really do have a "little screw that changes the speed."
However, since a CD player doesn't even maintain constant angular
velocity, I somehow doubt it.  I'd be interested in hearing from
you if you've altered any CD players this way, and how much longer
they have lived afterwards.

I'm not an expert on CD players, but I've read a few books on their
workings and have several friends who are quite knowledgable.  If 
I've made any gross errors, I'd appreciate any corrections.
From: v114qgu3@ubvmsd.cc.buffalo.edu (Henri Defense)
Newsgroups: rec.audio
Subject: MiniCD's
Date: 14 Dec 92 19:23:00 GMT
Organization: University at Buffalo
News-Software: VAX/VMS VNEWS 1.41


	The idea of the digital music cartridge was very interesting.  However,
here's a technologically and econmically feasible idea I think audio consumers
should push: MagnetoOptical MiniCD's.
	One of the reasons why CD's have to be so "large" is the high wavelength
of the laser used.  Currently the lasers are infrared (970 nm).  This places a
limit on how small the CD's pits or MD's Kerr spots are.  I've read that JVC 
and/or Philips have tried using visible blue lasers of higher frequency, which
can read smaller pits.  Apparently, by switching to blue lasers, it was possible
to cram all the data on a 4 3/4" CD onto a disc MiniDisc-sized.
	Although I am not certain if the size of the Kerr spots on a magneto-
optical disc can be shrunk using a higher frequency "heating" laser, I think we
shouldn't set our sights on re-recordable CD's, but on MiniCD's using MiniDisc 
technology and higher frequency lasers.
	
	I'd welcome any comments.
Newsgroups: rec.audio
From: btudose@bronze.ucs.indiana.edu (bogdan tudose)
Subject: Advent Legacy 2
Organization: Indiana University
Distribution: na
Date: Wed, 16 Dec 1992 21:42:15 GMT

   
     Are there happy Advent Legacy 2 owners out there?
 I am considering buying them ,but not right away and hence
I'll have the time to take in comments.They seem to me the
most bass-capable and with acceptable accuracy in their
price range.Do they have any sort of tweeter protection?
I will probably drive them with a Kenwood A5040 2x80 w
receiver that I hope can handle the 6 ohm loads.
  So should I buy Legacy ?
  Thanks, Bogdan





Newsgroups: rec.audio
From: mjv8557@eafs000.ca.boeing.com (Mark J. Vandiver)
Subject: Re: Fixing CD Scratches -- The Last Word
Organization: be41t
Distribution: na
Date: Thu, 17 Dec 1992 18:26:42 GMT

bruce@plato.ds.boeing.com (Bruce Stock) writes:

>I found the following bit of interdisciplinary advice posted in the 
>*woodworking* newsgroup:

>Xref: plato rec.audio.car:1410 rec.woodworking:1894
>Newsgroups: rec.audio.car,rec.woodworking
>Subject: Re: Fix scratch in CD?

>In article <If_JRdS00YUoQRglIa@andrew.cmu.edu> Steve Anthony Nilsen <sn1k+@andrew.cmu.edu> writes:
>>I have just a small nick in a favorite CD that causes my car CD player to
>>mistrack one certain song.  The CD plays fine in home CD players, but it's
>>enough to confuse the one in my car.  Is there any way to slightly polish
>>this out?  It always mistracks about 50 seconds into the song and takes
>>like 20 more to get past the scratch unless I cue it ahead.  The nick is 
>>really small, like the size of a fingernail clipping.  Is there something 
>>I can use to fill it slightly?
>>
>>Steve

>Have you tried spackle? Also, try sanding with the grain using 400 grit paper 
>and finishing with several coats of polyurethane. 

I have found that toothpaste, yes, toothpaste has the lowest abrasion and produces a high
buff shine on plastics and glass. I have used this method to remove scratches in auto glass
(though a very lengthy operation) and soft plastics. DO NOT USE GELLS for plastic. They have
a higher grit content and can damage plastic permanantly. Also, some of the Miracle brand
plastic auto windsheild polishing compounds will do a similar job. They also leave a wax
coat that can fill small inperfections. Don't polish in any other direction than radially.
Always polish from the center out as spokes in a wheel.

         Hope you find this usefull.   MArk>;^)

>Tim
Newsgroups: rec.audio
From: monitn@rebecca.its.rpi.edu (Nicholas Monitto)
Subject: Re: Shine On
Date: Sat, 19 Dec 1992 07:46:22 GMT

ss@wpi.WPI.EDU (Scott Streeter) writes:

>>>>>> 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

It's actually 7 of their albums (8 CDs) and one other disc, as follows:

"A Saucerful of Secrets"
"Meddle"
"Dark Side of the Moon"
"Wish You Were Here"
"Animals"
"The Wall" (2 CD)
"A Momentary Lapse of Reason"

plus a Digi-pak'ed disc of 'early singles'

Nick
monitn@rpi.edu
From: jeh@cmkrnl.com
Newsgroups: rec.audio
Subject: Re: I just tested DCC and MD...
Date: 17 Dec 92 00:40:26 PST
Organization: Kernel Mode Consulting, San Diego, CA

In article <Ef=uThS00iV104Iu9u@andrew.cmu.edu>, Brian T Cheek <bc2y+@andrew.cmu.edu> writes:
> Atro Tossavainen writes:
>>  I took a look at Philips' DCC900 ad. Though it mentions that the
>>technology uses a "coding" scheme in the recording, the ad claimed
>>flat out that the sound quality is _equal_ to a CD. This is, of
>>course, a lie; but is it grounds enough to, say, sue Philips for
>>customer misleading?
>  
> Yes, It should be.  Heres why:
> [...]

Well, wasn't the New York State Consumer Affairs Department (or something like
that) going to investigate the very high priced "audiophile" speaker cables
and interconnects?  Maybe we could get them interested in investigating
something where lots of people agree there's a difference, but the manufacturer
is claiming that there isn't?  

	--- Jamie Hanrahan, Kernel Mode Consulting, San Diego CA
Internet:  jeh@cmkrnl.com, hanrahan@eisner.decus.org, or jeh@crash.cts.com
Uucp:  ...{crash,eisner,uunet}!cmkrnl!jeh
From: jhenders@jonh.wimsey.bc.ca (John Henders)
Newsgroups: rec.audio
Distribution: world
Organization:  One of these days for sure
X-News: HERMES MMAIL 1.10 Rev. Nov 25 1992
Subject: Re: analog pride
	<1992Dec18.205458.14740@news.ysu.edu>
Date: Sat, 19 Dec 1992 16:24:10 -0800
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit

In <1992Dec18.205458.14740@news.ysu.edu> joe@avs.com (Joe Peterson) writes:

>Norman P. Tracy (znpt01@trc.amoco.com) wrote:

>This makes me think of TV shows that are filmed (using movie film) rather
>than video (like Cheers as opposed to most sitcoms).  Film gives a more
>unrealistic, softer look.  The crispness of video makes shows look "cheap".
>Maybe this is just because we are conditioned by movies...

	Isn't the video look also because there is a reduced depth of
field? This doesn't seem as real to me. Also, wouldn't peole be
conditioned by their day to day viewing of real images? 


-- 

 "If Rush fans were braindead, why are there so   Bruce Bufalini
 many people posting to alt.music.rush?"              PSU
Newsgroups: rec.audio
From: pwai (Patrick Wai)
Subject: Recommendation on boombox/bookshelf
Followup-To: rec.audio
Organization: Adobe Systems Inc.
Date: Wed, 16 Dec 1992 23:47:18 GMT


Hi y'all:

I need some recommendations on whether to buy a boombox (approx $350) or a
bookshelf "mini" system (up to $500).

I like the boombox idea 'cuz it's portable and I could take it anywhere.

But the mini system sounds better.

If I do decide on the latter, is there a way I could buy the components
separately?  I've seen and heard some pretty amazing mini speakers, but
miniature receiver, CD player and tape deck I haven't seen too many around
(at least ones I could afford).

Suggestions / Advice anyone?

Thanks.




Patrick
Newsgroups: rec.audio
From: laufer@math.luc.edu (Konstantin Laufer)
Subject: Re: MiniDisc is here!
Reply-To: laufer@math.luc.edu
Organization: Loyola University Chicago
Date: Thu, 17 Dec 1992 15:09:50 GMT

In article <1992Dec16.051902.23597@nmt.edu>, drkhoe@nmt.edu (ONID) writes:
> 
> Just to clear up some misconceptions:
> 
> DCC uses a hash table, just like a disc, to delete a song and replace it, you
> don't have to redo the whole tape..

So how do you deal with fragmentation??

-- 
-Konstantin [laufer@math.luc.edu]
From: gkc@freddie.udev.cdc.com (gordon k chace)
Newsgroups: rec.audio
Subject: Test signals on a CD?
Date: 11 Dec 92 14:49:23 GMT

Long ago, far away, I borrowed a test recording on an LP.  This produced
various tone sweeps and warbles and white/pink noises, so that with one's
ears or with the help of a handheld sound level meter, one could try out
different placement of speakers in one's home and adjust treble, etc.

I no longer have a turntable.  I'd like to find the same sort of diagnostic
recording on a CD.

Thanx in advance for anybody's help.
-- 
Gordon K. Chace
Control Data Systems, Inc.   phone (612) 482-6524   fax 482-2791
email: gordon.chace@cdc.com or gkc@udev.cdc.com
RISC: Really Invented on the Sixty-six-hundred by CDC
Newsgroups: rec.audio
From: cmk@gpu.utcs.utoronto.ca (Chiu Kwong)
Subject: PMI BUF-03
Organization: University of Toronto Computing Services
Distribution: na
Date: Tue, 15 Dec 1992 17:21:35 GMT

Hi, does anyone know where I can buy PMI BUF-03 buffers for a resonable 
amount of money?    Sonic Frontiers in Canada wants CAN$80 each for them!

Thanks!
Newsgroups: rec.audio
From: sorin@techunix.technion.ac.il (Goldenberg Sorin)
Subject: Re: Do I really need 200W?
Reply-To: sorin@techunix.technion.ac.il (Goldenberg Sorin)
Organization: Technion, Israel Inst. of Technology
Date: Mon, 14 Dec 1992 13:20:35 GMT

What's the difference between the P.M.P.O and R.M.S power ratings ?

Newsgroups: rec.audio
From: jpurlia@qualcomm.com (John Purlia)
Subject: MFSL UHQR Dark Side Of The Moon
Followup-To: rec.audio
Organization: Qualcomm, Inc.
Date: Tue, 15 Dec 1992 00:20:45 GMT

Can anyone speculate what the value might be of a still sealed copy of MFSL
UHQR release of Dark Side Of The Moon?  I bought one just before they went
out of print about 10 years ago.  Am I rich?

...........................................................................
John Purlia          : My brain; not my company's brain.  My brain says...
jpurlia@qualcomm.com : "The Toolbox giveth, and the Tech Notes taketh away"
...........................................................................
From: gb@cup.portal.com (Greg A Buechler)
Newsgroups: rec.audio
Subject: Re: Suggestions for Satellite Subwoofer speaker systems
Date: Wed, 16 Dec 92 10:26:28 PST
Organization: The Portal System (TM)
Distribution: na

Here's my $0.02 worth.

I purchased a Velodyne 810 and a pair of Advent Minis to complete my
surround sound set-up.  My perspective was I wanted to get a good sub-
woofer and a pair of good (and reasonably priced) smaller speakers, 
as apposed to a dedicated subwoofer/sattelite system (i.e. Boss AM-5/7.)

To be fair, I run the Velodyne to my front speakers, and use the Minis
as dedicated rear channel/surround speakers.

The Velodyne runs about $500 and is GREAT!
gb
Newsgroups: rec.audio,sci.electronics
From: dcovell@hfglobe.intel.com (David Covell)
Subject: Good deals on scopes?
Organization: Intel Corporation
Date: Fri, 11 Dec 1992 17:11:57 GMT


I'm looking for a source for a reliable scope at a nice price. I'm looking
for something that's feature-similar to the Tektronics 2200 line but in
the $500-800 price range. I've seen ads for Elenco and some other $500
scopes that claim to have the features and specs I want but I'm concerned
about reliability. Brightness of the display is another concern of mine.
My primary use will be audio, but I'd like a minimum of 20MHz for the 
occasional digital troubleshooting I do. Portability is desired.
Anyone have experience with some of the lower-price scopes? Or, anyone have
a clean used Tek or similar scope to sell in my price range?
Newsgroups: rec.audio
From: sikorsky@ee.ualberta.ca (Mike Sikorsky)
Subject: Planars again!
Organization: University Of Alberta, Edmonton Canada
Date: Sat, 19 Dec 1992 18:23:06 GMT

Why doesn't the industry just develop brain implants and skip the
mechanical reproduction of music...just zap that audio signal into the
grey matter...8-)

Does there not exist affordable designs that encompass the clarity and
imaging of a planar/electrostatic design with the solidness of a B&W 801, for
example (I'm partial to the 801's as a 'reference'...)?  I entertained some
of the Mirage M-series bipolars and liked them, but the piano black glossy
finish surely doubled the price...

B&W DM640/630?  Matrix 804?  Tannoy 615?  Thiel 3.6/2.2?  Definitive
Technologies' BP20?  I've listened to these and was generally impressed. 
Any comments out there?

I suppose what I really want is the best of *all* worlds...the perfect
box, for a great price.  I do think that bi/dipolars do provide greater
imaging, so at least I should limit my search to only those designs.  Am I
wrong on this one?

Perhaps a nice set of headphones...8-)

PS:  The correct path to me is sikorsky@bode.ee.ualberta.ca



Newsgroups: rec.audio