HDTenEightyP/NetNews huggingface dataset:
From: sbradley@scic.intel.com (Seth Bradley)
Newsgroups: rec.audio
Subject: Re: Ground Loops
Date: 14 Sep 92 15:39:48 GMT
Organization: Intel SCIC, Beaverton, OR

In article <19920914.051902.498@almaden.ibm.com> BARRON@RHQVM14.VNET.IBM.COM writes:
>The Hummm, and other problems (wavy bar running up the screen, etc) are
>usually due to ground loops through the cable system/your system.
>Try using a pair of back to back 75 - 300 ohm matching transformers
>Coax (from wall) to (75==>300) to (300==>75) to Coax to TV.

I recently used the same technique to eliminate 60 Hz hum that was introduced
into my stereo after my new DMX box was installed by the cable company.  The
hum was present whether or not the DMX was selected, but went away after
I disconnected the coax.  I'm surprised someone doesn't market an isolation
transformer for this purpose.  It seems like it could be better optimized that
way.
-- 
Seth J. Bradley, Senior System Administrator, Intel SCIC
Internet: sbradley@scic.intel.com   UUCP: uunet!scic.intel.com!sbradley
----------------------------------------
"A system admin's life is a sorry one.  The only advantage he has over
Emergency Room doctors is that malpractice suits are rare.  On the other
hand, ER doctors never have to deal with patients installing new versions
of their own innards!"  -Michael O'Brien
Newsgroups: rec.audio
Subject: THANKS: was, what satellite speaker system should I buy.
From: ejones@desire.wright.edu
Date: 4 Sep 92 14:50:23 EST
Organization: Wright State University 

Well, I think I will go ahead and check into low priced (<$500) speaker
systems. It turns out that my roomate is considering some higher end
componenents (well, higher than Radio Sh*t)  :)  so we will have between us
a decent (by poor college student standards) system. I think I will take
the advice of several of you and ignore the techno-snobs who wish me to
bankrupt myself. Actually, there advice is ok, but I don't want to wait
until I graduate before buying some of th stuff they advocated. Hell, I 
won't be done with grad school until 98 or so. PhD's take a while you know.
So, thanks for everyone's help. I also am going to check into the CSW stuff.
They are sending me a catalog as I write. I'll post to the net in the future
if I purchase some equipment. Thanks again. 
	Ed Jones
From: gt0179a@prism.gatech.EDU (Mike Chu)
Newsgroups: rec.audio
Subject: Very expensive cables
Date: 10 Sep 92 18:10:21 GMT
Organization: Georgia Institute of Technology

I've read the previous posts on cable and have a few comments to add.

Cables are the last components to purchase when building a system, and
they do make a considerable impact on the sound, believe it or not.  To
make a wise cable purchase one must not decide a minimum price -- that's
rediculous. . . cable sonics, unlike most other components, vary not
with price.  Buying cable is simply a matter of matching a cable to
ones system -- a good match will improve every parameter of your other
components.  For example, I read a few reviews on XLO cable that sells
for 200 bucks a meter.  Well I asked my dealer to lend me a pair for
audition, and he immediately informed me of a poor match.  Instead, he
guided me to a pair of 50 dollar cables that would work well in my system.

When building the ultimate high-end system, just shelling out bucks is not
the final goal.  However, if one finds a 2000 dollar cable that makes
him or her drool from the music, it is worth the price.  In a cost-no-object
system spending X000 dollars for cable to find an ideal match is not
uncommon -- luckily I found a close-to-ideal match for my system for around
one hundreth of the above cost.  
-- 
Mike Chu  --  Chemical Engineering
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!gt0179a
Internet: gt0179a@prism.gatech.edu
From: larry@cs.com (Larry Spence)
Newsgroups: rec.audio
Subject: Re: Sony's CD advertising
Date: 12 Sep 92 02:20:16 GMT
Organization: Computer Support Corporation,  Dallas,Texas

Like most people, I use blank cassettes to make compilations, tapes for
the car, etc.  In a car, the sound quality isn't nearly as important as
at home, due to road noise and the acoustics.  Plus, I already have a
problem with recording CDs for car/walkman use, in that the dynamic range
of CDs is often greater than what I want in a high-noise environment.
I'm surprised that MD players don't have (so far) built-in compression.
Another problem is that cassettes are so cheap that I can be pretty casual
about the occasional tape that gets melted on the dash, etc.  If MDs cost
$15, I'll have to baby them, and be careful about thieves.  When was the
last time someone broke into a car to get a box of cassettes?

Cassettes are great for things like making a sampler tape for friends, etc.
When a blank tape costs $2-3, I don't even think about the cost of materials
when giving someone a tape.  If blank MDs cost $10, they won't likely 
replace tape for these low-budget "lifestyle" (ack!) applications.  At least
in the US, the economy is in much poorer shape than when CDs were intro-
duced... seems like a bad time to introduce another expensive format IMHO.

-- 
Larry Spence
larry@cs.com
uunet!csccat!larry or sun!texsun!csccat!larry
Newsgroups: rec.audio
Subject: Digital bus for Philips cd player 780
From: <A605A410@HASARA11.BITNET>
Date: Tuesday, 15 Sep 1992 09:37:03 CET
Organization: SARA - Stichting Academisch Rekencentrum Amsterdam

Hello, I'm Patrick Koster and I have a PHILIPS CD PLAYER CD 780. I bought it in
 1990 and i want to update him with a digital coax bus. Does any have experienc
e with that and does anyone has the sceme of that cd player.
I also want to build in a remote sensor and FTS. Does anyone have those for che
ap and does anyone has the experience with that building in.
Please send your reactions to
PATRICK (a605a410@hasara11.bitnet)
From: philg@zurich.ai.mit.edu (Philip Greenspun)
Newsgroups: rec.audio
Subject: Re: Sony MD !!! absolutely great
Date: 8 Sep 92 21:26:49 GMT
Reply-To: philg@martigny.ai.mit.edu
Distribution: rec
Organization: M.I.T. Artificial Intelligence Lab.
In-reply-to: fineberg@win31.nas.nasa.gov's message of 8 Sep 92 18:59:36 GMT


In article <1992Sep8.185936.14125@nas.nasa.gov> fineberg@win31.nas.nasa.gov (Samuel A. Fineberg) writes:

   In article <klebl.715865697@tardis62>, klebl@iis.ethz.ch (Marcel Klebl) writes:
   |> 
   |> On december 1992 there will be 2 machines on the market.
   |> 
 ....
   |> 
   |> 2) player and recorder
   |> 
   |>    a little bit bigger. The design isn't perfect.
   |> 
   |>    Costs: 1000 sFr. (~ 1400 $)
   |> 
   ...

   At these prices I could just buy a DAT, AND a high CD player with digital output
   to make my own tapes (with full 16-bit digital sound, no compression), and 
   still pocket a few hundred dollars.  MD will never succeed at double
   the price of DAT (not that I think DAT will succeed in the consumer market).
   I also doubt the prices of the discs will be competitive with CDs at first,
   especially with the size of the market for >$1000 players.

You are forgetting that the original poster lives in Switzerland,
where a secretary makes $50,000/year and a Coke costs $4.  Here in the
Third World, I suspect MD will be priced to correspond to our meagre
means.

Philip Greenspun
MIT Department of EECS
From: chrisc@gold.gvg.tek.com (Chris Christensen)
Newsgroups: rec.audio
Subject: Re: Home-made audio rack - looking for suggestions
Date: 8 Sep 92 17:20:06 GMT
Organization: Grass Valley Group, Grass Valley, CA

In article <rolfe.715815450@sfu.ca> rolfe@fraser.sfu.ca 
(Christopher John Rolfe) writes:

>	I would suggest that you stay with an all-wood or other
>non-conducting material design.  It will save you from potential
>ground loops.  If metal frames are desirable for strength make sure to
>use those fat rubber washers to isolate the gear from the frame.

I just built another rack for my sound reinforcement system,  that
makes five.  I have never had any problems with ground loops from
mounting the equipment ( I use tapped rack rails).

My racks have anywhere from 4 to 15 bits of equipment mounted in
each rack.  I have both balanced and unbalanced equipment and I don't
use ground lifters!

I recommend that you use tapped rack rails and rack any and all of the
equipment you have,  then trouble shoot any ground loops.

Don't discount ground loops from improperly designed
commercial/comsumer electronic equipment!

-- 
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.
From: trw@spl1.spl.loral.com (Tim R Witort)
Newsgroups: rec.audio
Subject: Re: Jacked up CD prices again
Keywords: enoughs enough
Date: 14 Sep 92 19:23:01 GMT
Organization: Loral Software Productivity Laboratory

In article <lb9jj7INNf95@male.EBay.Sun.COM>, checksix@flyboy.EBay.Sun.COM (Al Conte) writes:
|> 
|> I read somewhere yesterday that the DC mougels have decided to, "take CDs to
|> the next price plateu".
|> They will start with, "Garth Brooks", gag me big time becasuse he is the biggest
|> sales producer currently.
|> We have got to stop these greedy scumsuckers from raping society with these
|> ridiculous price increases.
|> It is well known that CDs are far more cheaply produced than LPs were.
|> The price they were quoting seemed to be about $18.00.
|> What can we do?

   Don't buy them. Supply & Demand %\)

|> Al

-- Tim
From: henken@ocf.berkeley.edu (Matthew J. Henken)
Newsgroups: rec.audio
Subject: Advice needed:  Pre-amp and Tuner
Date: 11 Sep 1992 18:17:45 GMT
Organization: U.C. Berkeley Open Computing Facility
NNTP-Posting-Host: tsunami.berkeley.edu

Hello!  I need some advice and hope that you can answer from the wealth of
experience that is out there.  I have an Adcom GFA 555II amplifier getting
fed directly from a NAD 5000 CD player and driving Magnepan 2.6R speakers.

I want to get a tuner.  In order to work that into my system, I'll have to
get a preamp.  I like Adcom products and am thus naturally interested in the
combination preamp/tuners that they put out.

I'm looking for advice in two directions:

1.  Since I'm most seriously considering the Adcom GTP-400 and GTP-500II, I'd
    appreciate comparative advice about these two.  I can get the 400 for $325
    and the 500II for $500 (total, including tax).  I would like a remote
    control, and so I'm leaning toward the 500II.  I'd like to hear about the
    relative merits of their sound (both as a preamp and a tuner).

2.  I'm looking for any sort of advice as an alternative to this sort of set-up
    that would be a better buy, produce better sound, etc.

Any help you could give would be most appreciated.  And I mean *any*.


Matthew J. Henken
henken@ocf.berkeley.edu
Newsgroups: rec.audio,misc.forsale
From: Richard.Chalk@bbs.oit.unc.edu (Richard Chalk)
Subject: Stereo equip. for sale update 9/6/92
Organization: Extended Bulletin Board Service
Distribution: na
Date: Mon, 7 Sep 1992 01:50:26 GMT

In my previous post, I inadvdrtently inserted extra line-feeds, which
resulted in the message being double-spaced.  I hope this posting is better.
Thanks to those who pointed this out to me.
 
Please reply to: Richard.Chalk@bbs.oit.unc.edu   --Thanks
 
Following items are for sale (Used)  UPDATED LIST
 
Description                                  Year Mfg.   Orig. $   Asking $
                                                      (mail order)
 
CD Player, Yamaha CDX-500U, Single disk       1988        279       135
type, with remote control. Works well, has
a few scratches
 
CD Player, Yamaha CDX-510U, Single disk       1989        279       160
type, with remote control. Perfect Cond.
 
Cassette Deck, Yamaha KXR-430, Auto-reverse   1990        279       160
, Dolby B/C, HXPro, Full Remote Control,
Perfect Condition, with Manual
 
Receiver, Sony STR-AV1020, Dolby PRO-LOGIC    1991        629       340
Surround Sound, 100 Watts per Ch. front,
20 watts per Ch. Rear, Low-level Center.
Programmable remote control
 
Receiver, Sony STR-VX750, Older model,        1984        599       120
but has remote control. 70 Watts per Ch.
Digital AM/FM Tuner, inputs for Phono,
CD/AUX, Tape 1, Tape 2, Video 1, Video 2
(Includes dubbing). Perfect Condition, with
Manual, Remote, and original box.
 
Equalizer/Reverb. Sony SEH-310, Matches       1984        199        50
STR-VX750 Recever above. Has 9-band Equalizer,
Echo Level Control, Microphone preamp/mixer,
and switching for 2 tape decks. No manual.
 
Clock/Timer, Sony PT-D3, Digital clock, with  1984         ??      !SOLD!
various daily/weekly timer features. Matches
Receiver and Equalizer above. With manual.
 
Reply Here or Voice at 404-587-1613  Richard.
 
P.S. Believe it or not, I am not a dealer.  All this stuff is my own hobby
leftovers as I upgrade or change systems.
 


--
   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
Newsgroups: rec.audio
From: djtooley@napier.uwaterloo.ca (Doug Tooley)
Subject: Old CD Player (DCD-900)  --  Can I clean it myself?
Originator: djtooley@napier.uwaterloo.ca
Organization: University of Waterloo
Date: Sun, 6 Sep 1992 21:28:18 GMT

I have a Denon DCD-900 (read: old) CD player which is experiencing 
the problem of "recognizing" the CD. I generally have to eject, and
re-insert the CD several times for it to be read correctly. I then have
problems with skipping. 

My conclusion: It is not very good at tracking.
Why?           It's old, and needs a cleaning/adjustment/re-aligning.

Question: Is there something I could do myself (cleaning lenses?)
          which would help?  What should I *not* do? (to avoid damage)

Any help appreciated.

...."I haven't lost my mind, I know exactly where I left it."................
Doug Tooley             3A Co-Op CS student at U of Waterloo, Ontario, Canada
djtooley@{descartes|napier|cayley}.uwaterloo.ca              ..On Work Term..
Organization: Penn State University
Date: Wed, 9 Sep 1992 20:59:37 EDT
From: <LLH111@psuvm.psu.edu>
Newsgroups: rec.audio
Subject: Cleaning CDs

This is probably in the FAQ file, but I'm feeling kinda lazy...
What's the vbest way/materials for CD cleaning?  Thanks.
Richard
From: kurts@hpnmdla.sr.hp.com (Kurt Strain)
Date: Thu, 10 Sep 1992 19:52:57 GMT
Subject: Re: Choosing Cables (Was  Re: Very expensive cables)
Organization: Outpost 1T
From: tuohy@dune.Eng.Sun.COM (Bill Tuohy)
Newsgroups: rec.audio
Subject: Speaker wire and Damping Factor ( Why it's important )
Date: 14 Sep 92 17:45:30 GMT
Reply-To: tuohy@dune.Eng.Sun.COM (Bill Tuohy)
Organization: Sun Microsystems, Inc.  Mt. View, Ca.

With all the recent discussion of cables (again),
and no accomanying reasonable arguments either
way (again), I thought I'd relate the only
reasonable explanation of cable effects that
I have read.  This is from Speaker Builder,
3/92, p. 26-27, "Damping Factor Reviewed"
by Gary Galo, Contributing Editor.
The main points of the article follow.


Damping Factor (DF) is the ratio between the speaker
impedance and the amplifier source impedance, at
the speakers terminals.  The amplifier source
impedance seen by the speakers is the actual amp
source PLUS the cable resistance.  

Practically speaking, damping factor refers to the 
amps ability to control the motion of the speaker cone.  
When the amp sends a signal to the speaker, the cone moves,
but when the signal changes or disappears, the cone
may continue to move if not well controlled.  This
will distort the sound, with ringing or overshoot
on transients, etc.  The lower the amp source impedance,
the closer the cone movement will match the signal.
Higher source impedance causes the extra movement.

Since amps rarely spec output impedance, you can
calculate it from the damping factor spec if
you know your speakers impedance at the frequency
where the damping factor is speced (typically 50 Hz).

As an example, Galo uses an imaginary amp with a
DF of 400 at 8 ohms.  This means this amp has
an output impedance of 8/400 = 0.02 ohms.  Now 
see what happens with 15' of 16 gauge wire attached.
Since it's 2-condutcor cable, you actually have
30' of wire in the signal path.  30' of 16 ga. is
about 0.1228 ohms.  Add this to the 0.02 ohms of
the amp, and you get 0.1428 ohms.  Now the cable
resistance is quite significant.  The resulting
DF = 8/0.1428 = 56!  The damping factor is reduced
from 400 to 56 by normal wire!

With 12 ga. wire, the wire impedance is 0.048 ohms,
and the resulting DF is about 117.  This is a big
difference from 56.  

This means that people who compute wire resistance
of around 0.1 ohms, and say this is insignificant
compared to the 8 ohm speaker load, are looking
at it from the wrong end of the wire ( the amp end ).
You need to look at it from the speaker end of the
wire, where 0.1 ohms is VERY significant compared
to amp output impedances that range from 0.1 down to
0.01 ohms for the some of the better amps.

Series resistance of crossover components also affects
DF.  This discussion just shows how to keep the
effects of the wire to a minimum - short runs of
12 ga. or better wire.  Galo recommends longer
interconnect from preamp to amp, to shorten speaker
wire runs, if the preamp can handle the extra capacitcance.


Just trying to throw a little gas on the fire...

Bill
From: des@des.net.com (Dave Swanson)
Newsgroups: rec.audio
Subject: Alon speakers by Acarian Systems
Date: 5 Sep 92 21:48:36 GMT
Distribution: usa
Organization: N.E.T. Access Products Division, Santa Barbara

I've been auditioning speakers in the $1000 to $2000 range.  I've listened to
Theil, Vanderstein, Apogee, Snell, Magnapan, and Mission.  A local dealer just
got in the Alon IV and Alon II speakers by Acarian Systems.  I recall some
postings about the Alons, mostly about their appearence.  I don't recall any
discussion about how they sound.  Anyone want to put in their 2 cents about the
Alon II?
BTW, the Alon II lists for about $1800 and the Alon IV for about $3000.
I've seen the review of the Alon IV in _the abso!ute sound_ (Issue 80 June '92). 
Have there been any other published reviews?  Ultimatly, my ears will be the
judge... just wanted to get some other opinions.

Thanks in advance,
Dave Swanson (des@des.net.com)
Newsgroups: rec.audio
From: Siddharth.Soni@bbs.oit.unc.edu (Siddharth Soni)
Subject: Copying CD's to TAPE and Where to buy them.........
Organization: Extended Bulletin Board Service
Date: Tue, 15 Sep 1992 01:20:11 GMT

What do I set the recording level to when doing this?

Also, where can I get a large quantity of quality 
blank tapes? (up to 50!)

Any help is appreciated, Sidd

EMAIL: ssoni@csnext.colgate.edu


--
   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: U37426@uicvm.uic.edu
Newsgroups: rec.audio
Subject: ADVICE NEEDED!!!!!
Date: 10 Sep 92 22:16:37 GMT
Organization: University of Illinois at Chicago


     I am going to purchase a CD player real soon and would like some advice
 from others.  What is the best player for around $400?  Is there a CD player
that has truly different sound from all the rest?  What about Carver?  I have
always heard that most CD players are all the same.  Is this true?  I am going
to buy one quite soon and would like to here from EVERYBODY.  What do you like?
 What do you dislike??     THANKS ALOT!!!!!
Newsgroups: rec.audio
From: haydukd@cs.rpi.edu (Darren Hayduk)
Subject: VERIT speakers
Distribution: usa
Date: Sat, 5 Sep 1992 16:17:49 GMT

Has anyone have any dealings with VERIT speakers??  I have never heard of them
(But that means nothing....)  Someone is selling a pair of AV-8500
(12" Woofer, 12" P. Radiator, 5 1/4" Mid, 3" tweeter) and I was wondering
about them.

I currently have a Carver HR-772 preamp/amp wiht Cambridge Soundworks Ensemble
speakers.

Comments, feedback on the VERIT's??

Darren
Newsgroups: rec.audio
From: mlaird@Rapnet.Sanders.Lockheed.Com (Michael D. Laird)
Subject: Re: DAK audio wares (dbx/bsr)
Summary: Another opinion on DAK 
Keywords: dak audio speaker stereo dbx bsr
Organization: Lockheed Sanders, Inc.
Date: Wed, 9 Sep 92 17:14:31 GMT

I recently ordered DAK's BSR equalizer/analyzer, not knowing that they
were in financial trouble.  I received the equalizer within a couple
weeks and have been happy with it so far.  As one other netter
mentioned, the frequency bands do overlap somewhat, and the microphone's
frequency response is poor above 10KHz, but that's about what I expected
from a unit that DAK is now selling for only $129.  If I had spent a
fortune on it, I would have expected more, but I think it does its job
admirably considering the price I paid.  It's almost worth it just to be
able to watch all the blinkenlights :-).

My dad bought DAK's digital indoor/outdoor thermometer about 8 or 9
years ago and it is still working fine today.  He also bought a cordless
phone from them and found that he wasn't pleased with it, so he sent it
back and got a prompt refund. 

Behind all of the enthusiastic advertising there are some decent
products at good prices.  

Just another opinion...

Michael
-- 
---------------------------------------------------------------------------
Michael Laird
Lockheed Sanders, Inc.
mlaird@rapnet.sanders.lockheed.com
From: root@nemesis.UUCP
Date: 13 Sep 92 18:19 CDT
Newsgroups: rec.audio
Subject: Re: CD pricing
Message-ID: <-17462460@nemesis>