HDTenEightyP/NetNews huggingface dataset:
From: michael@Canada.lsil.com (Michael Smith)
Subject: Re: Question about rear speakers for surro
Reply-To: michael@Canada.lsil.com
Organization: LSI Logic Corporation of Canada, Inc.
Date: Tue, 22 Dec 1992 19:54:25 GMT

In article 72135@cup.portal.com, gb@cup.portal.com (Greg A Buechler) writes:
>To add to this question.
>
>I have been told that the rear channel is sent only the mid and high
>frequencies.  Given that, I would assume a subwoofer to these speakers
>would be useless. Advise?

The surround sound effect speakers are supposed to roll-off below 100Hz, although
I don't recall the slope of the roll-off.  Some boxes (like my Yamaha E1000) have
a "bass" boost for the low-end on the effect speakers.  But altogether, a subwofer
to these speakers should be useless.



---
     Michael Smith - Chipset Design Engineer

Phone: (416) 620-7400         michael@canada.lsil.com
Fax:   (416) 694-5005

    _/     _/_/   _/_/_/   _/                   _/
   _/    _/        _/     _/ 
  _/      _/_/    _/     _/     _/_/_/ _/_/_/ _/ _/_/_/
 _/         _/   _/     _/     _/  _/ _/  _/ _/ _/
_/_/_/ _/_/_/ _/_/_/   _/_/_/ _/_/_/ _/_/_/ _/ _/_/_/
                                        _/   LSI Logic Corp. of Canada, Inc.
                                   _/_/_/   Suite 1110, 401 The West Mall
                                           Etobicoke, Ontario
                                          M9C 5J5
From: chrisc@gold.gvg.tek.com (Chris Christensen)
Newsgroups: rec.audio
Subject: Re: Define "Headroom"
Date: 31 Dec 92 19:26:22 GMT
Organization: Grass Valley Group, Grass Valley, CA

In article <1992Dec29.134904.350@ncrcae.ColumbiaSC.NCR.COM> 
chris@lightnin.Columbia.NCR.COM writes:

>  Can someone enlighten me as to what is meant by "Headroom"?  Technical
>descriptions as well as figurative descriptions would be helpful.

The term "headroom" is used to describe both technical and esoteric
aspects of audio.  The proper definition is:

Headroom= The difference between a nominal and maximum signal level
that an audio device is designed to function.  The signal is described
in dB.

Example:  An audio mixer designed to operate at (one) +4dBm will
usually have a headroom of 20 dB.  In other words the maximum output
will be +24dBm. 

Maximum output= the point just below cliping of the signalin question.

Power amp discussion:

For power amplifiers used in audio the term headroom _usually_ defines
the difference in the rated output and the maximum output when the
amplifier is stimulated by a signal that is increased above the level
that generated the rated output.  Usually a gated signal.  I would
have to dig up the specs on this kind of measurement (I am sure that
others will be able to supply these test methods from memory, and or
correct my ststements  :-).

The figures that I have seen on consumer amplifiers is on the order of
a couple of dB.

Keep in mind that with crest factors of 12-20 dB audio can eat up
power and you won't know it until you are out of power!

There has been a lot of discussion on "do I really need a 200 watt amp"
I have seen responses like " a (""better sounding") 100 watt amp can
sound better than a 200 watt amp.

All of this is true but for different reasons.  My basic observation
is that lotsa a power is good.  Caculate it for yourself!  How much
power does it take to reproduce the 12-20 dB crest factor of an audio
signal using a speaker who's midband output is 90 dB, 1 watt, 1 meter?
What is the power rating requirement for the speaker that is to
produce this sound?  For this problem only, ignore the thermal
compression of the speaker!

Gee I sure got off the topic!

-- 
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: Frank@mindlink.bc.ca (Frank I. Reiter)
Subject: Re: Another Sub Woofer question
Organization: MIND LINK! - British Columbia, Canada
Date: Thu, 31 Dec 1992 19:38:55 GMT

> Dan "Viper" Baldwin writes:
>
>         I have a Yamaha RXV-850 reciever and an Infinity 10" subwoofer
> powered with 100 Watts. From answers to a previous post, I have gathered
> that to reap the maximum benifits from the sub-woofer, I need to include
> a cross over so that signals going to the main speakers are devoid of
> lower frequencies ( say < 200 HZ ). Doe the cross over connect to the high
> level main speaker terminals of the reciever and then divide the signal
> to the mains and the subwoofer ?

My understanding is that one can find subwoofers which are connected to your
amplifier and which pass the higher frequencies on to your regular speakers.
I haven't looked at one though (yet) so perhaps I am wrong.  Anybody?

Frank.
--
___________________________________________________________________
Frank I. Reiter                 Internet: Frank@mindlink.bc.ca
MIND LINK! Communications Corp. Surrey, British Columbia, Canada
From: curt@oasys.dt.navy.mil (Curt Welch)
Newsgroups: rec.audio
Subject: Re: MiniDisc is here!
Date: 27 Dec 92 05:36:48 GMT
Reply-To: curt@oasys.dt.navy.mil (Curt Welch)
Organization: Carderock Division, NSWC, Bethesda, MD

Paul Rubin writes:
>>In article <Bzu539.DDt@news.cso.uiuc.edu> rmg53668@dcl-nxt53 (Ryan Martin Gran
>t) writes:
>   MD still suffers from the same problems CD-ROMs do with regard to
>   variable spin rates and inertia killing random seek times.  I still
>   look forward to a small portable disc capable of handling well over
>   100MB, but I do not expect it to replace my 250MB HD.

>MD has 1/4th the transfer speed of CD (hence the 4:1 compression).
>This bit rate is comparable to a floppy.

The compression in MD is 2048:424 which is closer to 5:1.

In rec.audio, tlai@cs.toronto.edu (Tony Wen Hsun Lai) writes:
>Er, I recall some magazine mentioning that an MD has a transfer rate of
>around 1.4 Mbit/s, comparable to a CD; the transfer rate has to be much
>faster than the compressed audio bit rate to keep the audio buffer full.

Yes, this is what all the Sony adds say for the read rate.  It's
basically the same as the rate for the CD.   But I haven't seen
anything that talks about the write speed.  Someone in this group
thought the rate was slower than the CD which is part of the reason for
using compression.

The MD is also designed so the track/sector type information can be
read off the disk faster than the CD format - which also improves
seeks times.  But still, I don't expect it to be as fast as a
floppy - but I sure would like it if it were.

BTW, at the higher read rate, it only takes about 15 minutes to read
the entire disk (not 74).

/-----------------------------------------------------------------------------\
| Curt Welch - KCW Consulting           By 1995, there will be just two kinds |
| curt@kcwc.com - NeXTmail please!      of professionals:  Those who use NeXT,|
| (703) 938-4152  FAX (703) 938-5756    and those without Jobs.               |
\-----------------------------------------------------------------------------/
From: "herb chong" <herb.chong@channel1.com>
Newsgroups: rec.audio
Subject: mfsl uhqr dsotm
Date: 21 Dec 92 17:13:15 EST
Reply-To: "herb chong" <herb.chong@channel1.com>
Distribution: rec
Organization: Channel 1 Communications

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

what did you pay for it? at one time, a couple of hundred dollars was the 
going rate. i don't know if the prices have held up though. FWIW, i have a 
sealed copy of the Sheffield Labs LAB-2, Thelma Houston's I've Got the 
Music in Me that isn't worth more than i paid for it. i have another copy 
i play instead, and the CD too. the record is definitely better than the 
CD, but i don't think they paid much attention to quality of the tape 
copy.

Herb...

---
  WinQwk 2.0 a#314  Is that seat saved?  No, but we are praying for it!
--
Channel 1 (R)   Cambridge, MA

Newsgroups: rec.audio
From: powell@wraith.netops.gtefsd.com (Mike Powell "GTE FSD Net Mgr")
Subject: Re: Looking for a Portable CD player for occasional use in car
Keywords: Sony, Magnavox
Organization: GTE Federal Systems (Telecom)
Distribution: na
Date: Tue, 29 Dec 1992 02:39:21 GMT

In article <921222215347@wraith.netops.gtefsd.com> powell@wraith.netops.gtefsd.com (Mike Powell "GTE FSD Net Mgr") writes:
>Howdy,
>I am in the market for a portable CD player. One that will work anywhere
>including my car.
>
>I have a Nakamichi RD-460 in my car (which supports CD line inputs),
>no CD player at home (yet), and a CD-ROM at (my current) work that works
>nicely with my audio CDs.
>
>
>Since I am not willing to replace my car unit, and I would like to have
>a CD player that I can take anywhere, the portable ones seem like the
>
>I have seen the Sony 180K, 802K, 808K, and the Magnavox CDB502.
>The Sony 802K looks the best so far.
>
>My basic question is what is the best unit for the job?
>
>Other factors:
>	Is there any big difference in the car "rated" units?
>		vibration dampening?
>		hookups for a car without a CD player?
>		lighting?
>	Do all portable CD players have:
>		a line out?
>		12VDC in?
>I have only been at this a short time and I am lost.
>Has any magazine or other source done a write up lately?
>I have checked Consumer Reports, nothing.
>
>Any info would be appreciated.
>Thanks,
>Mike

I have done some more looking.
the 802 has a lighted panel and comes with the 12V adapter cable.
the 802 runs on 4 AAs
the Sony 119, has a remote, but not the 12V adapter, but can recharge its
own batteries.
the 12V adapter option costs about $30.
the 119 runs on 2 AAs
the 119 is about $50 cheaper.
which is the better bet?

Mike
--
Mike Powell PPASEL
"It's hard to find router bits for your cisco"
Disclaimer: I speak for myself. No direct relation to the DUAT folks.
internet: powell@wraith.netops.gtefsd.com  Usenet: uunet!wraith.netops.gtefsd.com!powell
Newsgroups: rec.audio
From: ptg2351@uxa.cso.uiuc.edu (Panos Tamamidis )
Subject: Re: recommendation for power amp
Organization: University of Illinois at Urbana
Date: Wed, 30 Dec 1992 03:19:21 GMT

cycm@cs.utexas.edu (Jimmy Gunawan Jusuf) writes:

>Hi, I'm posting for a friend who doesn't have Usenet access.
>Please reply to cycm@cs.utexas.edu.

>----------------------------------------------------------------
>I just purchased Apogee Stages loudspeaker and now looking
>for a matching power amplifier (under $3000). Any kind soul
>out there with recommendation?

 What? You expect to match the Apogee loudspeakers with a power amp. that
 costs below $3,000?  Tsk, tsk, tsk ...

>Indra Setiawan

 Panos
Newsgroups: rec.audio
From: perry@lheavx.gsfc.nasa.gov (Brendan Perry)
Subject: 'Bookshelf' Speakers???
Followup-To: rec.audio
Organization: NASA/Goddard Space Flight Center
Date: Mon, 21 Dec 1992 21:04:59 GMT

Greetings,

I'm in the market for a pair of so called 'Bookshelf' speakers in the $200
to use as my secondaries. I have a 33 WPC Denon DRA-300 I bought in 1984
and
still does the job. My primary speakers are Infinity RS-8a's I also got in
1984. I mainly play Rock & Roll, Blues and Reggae and want a second pair of
speakers to allow for listening in another room than my system.

I listened to Mirages (don't remember the type, but they were $208, marked
down from $250), JBL's, Polk Audio's smallest, and am going to try Baby
Advents, Infinity Reference 1's, and Boston Acoustics. I really liked the
Mirages, didn't like the Polk's (too much phony low-end, like they were
trying too hard to make the bookshelf's sound like the Tower's) , didn't
like the JBL's (too 'muddy'). Any suggestions? I saw in the paper the
Infinities for $199 and the Boston Acoustics for $184. 

Thanks in advance,

Brendan
Newsgroups: rec.audio
From: whiting@europa.eng.gtefsd.com (claude whiting)
Newsgroups: rec.audio
Subject: HELP! Second receiver
Date: 21 Dec 1992 13:49:22 -0600
Organization: UTexas Mail-to-News Gateway
NNTP-Posting-Host: cs.utexas.edu

Newsgroups: rec.audio
Subject:HELP! Second Receiver 
Reply-To: whiting@europa.eng.gtefsd.com (claude whiting)
Followup-To: 
Distribution:usa 
Organization: GTE Federal Systems
Keywords: 

Need some advice and help on selecting an inexpensive receiver for a 
secondary system. My 25 year old Pioneer finally gave out (loud hum), and I 
would like to replace it with a 60 wpc or so receiver for $200 or less. This 
system will only be used mainly for background music. Any suggestions? And is 
it worth mail-ordering? Will I save much money in such a cheap price range?

Any help would be much appreciated.

Claude

Newsgroups: rec.audio
From: daniel@netcom.com (Sam Daniel)
Subject: Re: BMG 800 number?
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Distribution: usa
Date: Fri, 1 Jan 1993 09:26:07 GMT

jlee@leland.Stanford.EDU (Joseph Chee-Yoon Lee) writes:

>I thought I once saw a posting that said there is an 800 number for BMG.
>Could someone please re-post?  Also, is it still possible to ask them
>to assume that I do NOT want the monthly selection so I don't have to
>send that silly card in every month?  Thanks in advanced,

As far as I know, the 800 number has been discontinued, probably to
save money because it got too popular.

The new Customer Service number is (317) 542-0414.

The positive response option is still available, as far as I know
(I've been on it for more than a year), but only after you've
fulfilled your original membership agreement.  They may refuse you the
first few times you ask, so keep trying every month.
-- 
*
Sam Daniel          *   UUCP (Smart):  daniel@netcom.com
Paramax Systems     *         (Dumb):  {...}!uunet!netcom!daniel
1001 W. Maude Ave.  *          Voice:  1-408-235-2661
Sunnyvale, CA 95131 *     Disclaimer:  It's only my opinion, but it's
                                       a DAMN good one...
From: shetline@bbn.com (Kerry Shetline)
Newsgroups: rec.audio
Subject: Re: Selecting an LD Player
Date: 1 Jan 93 03:24:58 GMT
Followup-To: rec.audio,rec.video
Organization: BBN
NNTP-Posting-Host: bbn.com

In article <1993Jan1.014230.19891@midway.uchicago.edu>,
cal@gsbux1.uchicago.edu (Cal Lott) wrote:
  ...
> 	Kerry, my understanding of the term "jitter" as used in "high-
> end hype" has nothing to do with mechanical thumping and shaking.

That is my understanding, too. Which is why I find claims of improved
mechanical stability resulting in reduced jitter in a digital signal
absurd. The Theta people want you to believe that gross mechanical
vibration (well short of causing mistracking) will somehow manifest in the
data stream, or the analog signal produced thereof. Only in something so
badly designed that in would have to be done on purpose!

-Kerry
Newsgroups: rec.audio
From: pms26964@uxa.cso.uiuc.edu (Phil Scopes)
Subject: buying a CD player
Organization: University of Illinois at Urbana
Date: Fri, 25 Dec 1992 00:58:33 GMT

I am in the process of buying a CD player, and I am definitely going to get a 
five-disc carrousel changer.  What I am wondering is whether there are really
differences in sound quality between players.  I went to United Audio today
and listened in headphones to two Denon units--one was $279 and one was $449.
I noticed no difference in sound quality, but the salesman claims that there
is better sound on the higher-priced model.  I wonder whether he is just
trying to sell a more expensive model or if I am just not hearing the
difference.  I know that I have good hearing, which is why I want CDs rather
than cassettes in the first place.  I just am not sure whether this salesman
was honest when he said there was a difference.  Any comments?


-- 
* Phil Scopes (pms26964@uxa.cso.uiuc.edu)
* University of Illinois
* Champaign/Urbana
From: borchers@poogh.llnl.gov (Robert R. Borchers)
Newsgroups: rec.audio
Subject: Re: Laser Disk combi players...
Date: 29 Dec 92 18:48:25 GMT

In article <1992Dec29.164532.737@news.ysu.edu> lou@yfn.ysu.edu (Lou  
Anschuetz) writes:
> Not having been a reader of these groups in the past, I'm now coming
> to you because I have a high level need for a Laser Disk player and
> am a bit concerned that for this much bread I buy the best piece
> I can.  BTW, this much bread translates to between $400-$600.
> 
> EVERY store under the sun is carrying the Pioneer gear, which has
> terrific specs even at the low end (ie: $400 for the P1LDS2OF).  Lots
> of acquaintances tell me that Pioneer stuff is still not good, though
> a lot of high end audio stores carry it exclusively now, leading
> to my puzzlement.
> 
(stuff deleted)
--
I have had a Pioneer CLD 909 for about 5 years and have absolutely no  
comlaints about it. It was a sort of second generation combi player. I  
suspect the new ones are even better. My only gripe is that it, like many  
such, does not let you take advantage of the CD's that are indexed. Bob

Robert R. Borchers
L-414
Livermore, Ca 94551
borchers@llnl.gov
NeXTmail Welcome
Newsgroups: rec.audio
From: chris@lightnin.Columbia.NCR.COM ()
Subject: Define "Headroom"
Originator: chris@lightnin
Organization: NCR Corp, E&M-Columbia, Columbia, SC
Date: Tue, 29 Dec 92 18:49:04 GMT

  Can someone enlighten me as to what is meant by "Headroom"?  Technical
descriptions as well as figurative descriptions would be helpful.

Thanks,

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

Thoughts expressed here are my own and not representative of NCR
-------------------------------------------------------------------------
Newsgroups: rec.audio
From: sma2@blitzen.cc.bellcore.com (agin,sam m)
Subject: Service manual - Pioneer PD-M610 CD changer
Organization: Bellcore, Livingston, NJ
Date: Tue, 22 Dec 92 16:00:43 GMT
Keywords: I need

Does anybody have the service manual for the Pioneer PD-M610 CD changer.
I installed a new laser and need the alignment procedures.
If you have the manual and access to a FAX machine, let me know.
If you don't have access to a FAX, let me know anyway

Thanks

Sam Agin
Sam's VCR Repair
From: ark@alice.att.com (Andrew Koenig)
Newsgroups: rec.audio
Subject: Re: Please excuse-just a test
Date: 27 Dec 92 22:24:03 GMT
Article-I.D.: alice.24491
Reply-To: ark@alice.UUCP ()
Organization: AT&T Bell Laboratories, Murray Hill NJ

In article <shetline-271292150956@128.89.19.80> shetline@bbn.com (Kerry Shetline) writes:

> I getting some strange problems with the way my news software is handling
> word-wrap.

Perhaps you should upgrade the cable you use to connect your keyboard
to the rest of your system.
-- 
				--Andrew Koenig
				  ark@europa.att.com
From: ch218@cleveland.Freenet.Edu (Erik A. Horn)
Newsgroups: rec.audio
Subject: Re: ANY RECOMMENDATIONS ON SONY D-34 PORTABLE CD PLAYER?
Date: 21 Dec 1992 18:23:04 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


I bought a Sony D-34, and truly regret my descion.. To say the
least, it is a piece of garbage.. It play cd's well enough, if
you do not touch it.  It skips at any slight movement.  The bass
boast is a joke and just distorts the sound.  If you intend to 
buy a portable cd player, I would not purchase anything under 150
(from what I can tell, someone else may be better able to 
recomend something).  I plan on selling mine eventually and buying
a higher end one.  If the player did not skip at the slighest
jostle I might be a little more impressed with it.
Newsgroups: rec.audio

>For those rude folks who flamed my opinion that the ear is the
>most sensitive dynamic instrument created, I would like to say
>that i can't name any microphones with a 120+ Db Dynamic range
>at near zero distortion, (notto say the don't exist, I've just
>never encountered any...)
> 
>Anyone agree? disagree? (let's keep things polite here, this
>is just a discussion...)
> 
>ned.
----------
Wellllll......
Disagree:  

Fact #1:  Some ears like the sound of Bose speakers

Fact #2:  Some ears strongly dislike the noise comming from Bose
          speakers.  8-)

Maybe the ears aren't the problem and the distortion is in the
analog neural processor network?

Kirk (on vacation!) out

Newsgroups: rec.audio
From: nau@ssesco.com (William Nau)
Subject: Analog CDs (was: CD Sound Quality)
Organization: SSESCO
Date: Tue, 22 Dec 1992 21:49:34 GMT

Bob Myers writes:
> Yes, that IS what LDs are; now why do you think this would be better than
> any existing format?  The bandwidth?  They're certainly not very convenient
> (too big), nor are they as durable as CDs (given the analog nature of the
> signal, they're not nearly as forgiving of defects as the error-corrected
> digital CD format).

I believe he ment to indicate that the method used to record 1 hour of video
on a LD could be condensed to a much smaller (5") disk for 75 minutes of
audio.  This would give you an analogue recording with the convience of
a CD.  I find the idea interesting and would be interested in the audio
quality.
-- 
William R. Nau
Supercomputer Systems Engineering and Services Company (SSESCO)
511 11th Avenue South, Suite 216
Minneapolis, Minnesota 55415-1536
(612) 342-0003

nau@SSESCO.com
From: jan@gluon.ansoft.com (Seaway Jan)
Subject: Re: Dealings with 6th Ave. Electronics
Organization: Ansoft Corporation
Distribution: rec
Date: Sun, 27 Dec 1992 20:40:44 GMT


dj@pixar.com (Dennis Jennings) writes:
: I would appreciate any comments (negative or positive) about any transactions
: you may have had with 6th Ave. Electronics. I have dealt with them, both at 
: their retail location in NYC and their mail order department in New Jersey.
: My experiences were not particularly pleasant and I'd like some input from
: other customers before I proceed in my battle with them. Thank you.


Hi, Dennis:

	I have had several transactions with 6th Ave and other sleazy NY
stores. My strategy is always : 
 	(1) pick one model from their ad which has price listed.
	(2) ask if the model is available, if not, leave!
	(2) if yes, stick to the model you want, ignore any recommendation the
	    salesperson has to make.

	Usually, the sales person will recommend other brand of which
performance is probably better, but the price presents no saving. Most
customers have the wrong impression from the ads that all products are cheap
in 6th Ave.

	The 6th Ave in Paramus seems to give me less trouble, they didn't
give me any hassle when I bought my Boston Acoutics Speakers. The other
store in NJ has some "good" salesman that is hard to resist. Last time I
just plainly told them that "I am a cheap customer and just want some
cheap stuff, I don't care too much about sound quality."
	I have never had any transaction in their NY store since there has
never been anything on stock when I went.

	I like these sleazy NY stores, though. It makes shopping adventurous
and, Hey ! This is New York, anything can happen!

	
Seaway

PS. if you are looking for Adcom products, 6th Ave is no longer the
cheapest place to get from. You can get comparable price from mail order
place like "City Shoppers", a shopper service affiliated with Citibank
Visa.


	
Newsgroups: rec.audio