HDTenEightyP/NetNews huggingface dataset:
From: henrylin@dial.Princeton.EDU (Henry Hung-i Lin)
Subject: For Sale: Sumo Ulysses power amp
Originator: news@nimaster
Organization: Princeton University
Date: Fri, 18 Dec 1992 05:46:18 GMT


For Sale: Sumo Ulysses 60wpc power amplifier (excellent+ condition)

specs:	
		power : 60wpc into 8ohms from 20-20kHz. THD<.05%
		hum and noise: 105dB below rated power. 90dB below 1watt
		input sensitivity: 1.8v RMS (at rated output)
				   130mv RMS (at 1watt)
		input impedence: 47k Ohms
		damping factor: >500
		interchannel separation: >80dB

comments: it's a beautiful sounding, solidly built amp which has served me well.
	  sonically, it's rather transparent and neutral sounding (as opposed t	  the warm-ish sounding B&K ST140). current handling is rated at 50amps.
	  i'm selling to finance the purchase of a used cary tube amp (i'm a
	  strong advocate of buying used audio components).

asking $340obo+1/2 ship. please contact me at (201)822-3585 or
henrylin@phoenix.princeton.edu. thanks...

					henri
.
From: kirk@hpcc01.corp.hp.com (Kirk Lindstrom)
Date: Wed, 16 Dec 1992 22:52:29 GMT
Subject: Re: Power specs, was: Re: Do I really need 200W?
Organization: Shredding the water of SF Bay, HP-OCD
Newsgroups: rec.audio

Dick, interesting post on amp numbering history!  I don't think it is
any longer in effect as the 2 amps I've purchased this year had
their power ratings in their names:

Car:  rf460sd  ( 4 channel, 30 WPC/8 or 60 WPC/4 Ohms)
Home  A250 (Acurus 250 WPC into 8 Ohms)

Both are made in the US!!!!
(Well, at least the A250).

Kirk out
From: scott@psy.uwa.oz.au (Scott Fisher)
Newsgroups: rec.audio
Subject: Re: Power specs, was: Re: Do I really need 200W?
Date: 15 Dec 1992 08:26:39 GMT
Organization: The University of Western Australia
NNTP-Posting-Host: wapsy.psy.uwa.oz.au

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

>The second problem lies with an absolutely stupid clause in the regs that
>says that the amplifier model number cannot be related to the output
>power. This means that amplifiers like MacIntosh 2105's (which was a
>stereo 105 watt/channel amp) ended up being rated now at 104 or 106 watts.
>Marantz 2270's were, instead of 70 watts per channel, called 72 watts per
>channel. The Marantz Model 9 (a mono 70 watt tube amp) were safe, though. 
>It was a real dumb idea.

Really?

Is this just a US thing?  Here in Australia the Rotel range of amps/receivers
model numbers often match the output (RMS) power...

RB960BX = 60W RMS (Power amp)
RA960BX = 60W RMS (Integrated amp)
RA940BX = 40W RMS (Integrated amp)
RA930AX = 30W RMS (Integrated amp)
RA920AX = 20W RMS (Integrated amp)
RX950AX = 50W RMS (Receiver)
RX940AX = 40W RMS (Receiver)

The only amps/receivers that don't fit the convention are...

RB990BX = 200W RMS (Power amp)
RB980BX = 120W RMS (Power amp)
RA980BX = 100W RMS (Integrated amp)

What are these called in the US?

>Now, having posted this before, it never occured to me that this
>regulation MIGHT no longer be in effect. THere was something approaching a
>wholesale dismantling of regulations under the Reagan era with the idea of
>"unencumbering" business. Unfortunately, this is one of those regulations
>that did a pretty good job of protecting consumers from clearly deceptive
>claims by many, many manufacturers. Out the window with the bathwater, the
>baby doth fly. (followups on this last topic may be followed in
>alt.politics.conservative-whining, please). 

The above cross-check should shoud tell you fairly quickly if the regulation
is still in force.

Regards Scott,
_______________________________________________________________________________
Scott Fisher [scott@psy.uwa.oz.au]  PH: Aus [61] Perth (09) Local (380 3272).                
                                                             _--_|\       N
Department of Psychology                                    /      \    W + E
University of Western Australia.      Perth [32S, 116E]-->  *_.--._/      S
Nedlands, 6009.  PERTH, W.A.                                      v       

Joy is a Jaguar XJ6 with a flat battery, a blown oil seal and an unsympathetic 
wife, 9km outside of a small remote town, 3:15am on a cold wet winters morning.
-------------------------------------------------------------------------------
Newsgroups: rec.audio
From: koops@gaul.csd.uwo.ca (Luke Koops)
Subject: Random play method on Philips carousel CD player
Organization: Computer Science Dept., Univ. of Western Ontario, London, Canada
Date: Mon, 14 Dec 1992 16:27:13 GMT


In a previous post, I asked about the "random" playing method of a
particular Philips CD player, but I couln't remember the model number.
Now that I'm at home, I found the scrap of paper I wrote it on.  The
model is "CDC935BK".  
Surely someone out there has one of these things (ie. this model).  If so,
please drop me a note in email, so I can find out just a wee bit more about
it.

Thanks!

...Steve van der Burg

-- 
    /
***/
*\/* koops@csd.uwo.ca
****
Xref: sparky rec.audio:16862 su.market:1872
From: jeh@cmkrnl.com
Newsgroups: rec.audio,su.market
Subject: Re: **Stereo Equipment for Sale**
Date: 16 Dec 92 16:30:16 PST
Organization: Kernel Mode Consulting, San Diego, CA

In article <1992Dec16.192459.20454@leland.Stanford.EDU>,
 sugimoto@leland.Stanford.EDU (Edward Sugi Morimoto) writes:
> I have the following pieces of stereo equipment that I am thinking of selling:
> 
> Denon DRA-425 50W/ch Receiver
> Yamaha AVX 700 Dolby Pro-logic integrated amplifier
> Nakamichi RX-202 autoreverse tape deck
> Denon DCD-910 8x oversampling CD player
> 
> I'm not sure if I want to sell this stuff, but if I get reasonable offers
> I would like to upgrade my system.

In other words, you are interested in getting better equipment, but only if you
can sell this "lesser stuff" to someone else who thinks better of it than you
do??

	--- 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: msiegall@OAVAX.CSUCHICO.EDU (MARC SIEGALL)
Newsgroups: rec.audio
Subject: CDs and cars
Date: 16 Dec 92 01:46:47 GMT
Reply-To: msiegall@OAVAX.CSUCHICO.EDU
Organization: California State University, Chico
NNTP-Posting-Host: oavax.csuchico.edu

I have an in-dash CD player, and was wondering if anyone had answers to
these two questions:

I keep some discs in my car (in a holder).  Do I need to worry about
the outside temperature?  How do near freezing temps affect CDs, even
if they are in velvet lined pockets?

If I'm playing a disc and turn the car off, the CD stays in the player.
When I start the car again, the player picks up right where it let off.
My tape deck automatically ejects tapes when the deck is turned off.
Should I be sure to remove my discs before turning off the car, or are
they OK in the deck?  
******************************************************************************
Marc Siegall                     MSIEGALL@OAVAX.CSUCHICO.EDU
Department of Management
California State University      (916) 898-5421
Chico, CA 95929-0031
******************************************************************************
Newsgroups: rec.audio
From: Formats <id=6003@um.cc.umich.edu>
Subject: Re: I just tested DCC and MD...
Date: Mon, 14 Dec 92 19:42:18 EST
Organization: U of M
X-Useragent: Nuntius v1.1.1d9
X-Xxmessage-Id: <A75295153901AE95@ugli-mac149.engin.umich.edu>
X-Xxdate: Mon, 14 Dec 92 00:46:29 GMT

In article <Bz4t27.Dp@watserv1.uwaterloo.ca> Commander Brett Maraldo,
bmaraldo@watserv1.uwaterloo.ca writes:
>compression).  I like CD, I like analgoue cassette, I like DAT and vinyl.

		Well, I'm sorry to say that the industry doesn't respond only to what
you like, Brett.  CD's have pretty much carved their place in the audio
format world, and until they come up with a non-lossy >40 kHz digital
format, I think that CD will be around.  And studios are still going to
record on DAT (or ADAT, or some sort of non-lossy digital format) no
matter what the consumers choose to do.

		You have to also keep in mind politics.  The features or price of DAT
didn't kill it, the recording industry did 'cause they're ultra paranoid.
 They love the new formats because D-A-D recordings introduce more
artifacts and noise.  The market is in need of a recordable digital
media, which is what MD and DCC provide.  I wouldn't buy either, but to
the consumer who doesn't know the whole story, they might look tempting
(If you read the ads, you have to really look to see a mention of the
fact that a compression is used during recording).


	In any case, CD's will remain the #1 format, DAT will be used to master
albums, vinyl will be used by rappers/scratchers, analog tape will be
used as the primary recordable media, and one if not both of the new
formats will go Beta.  Only time will tell.
From: curt@oasys.dt.navy.mil (Curt Welch)
Newsgroups: rec.audio
Subject: Re: Digital-to-Digital copying
Date: 14 Dec 92 20:40:08 GMT
Reply-To: curt@oasys.dt.navy.mil (Curt Welch)
Organization: Carderock Division, NSWC, Bethesda, MD

In rec.audio, johe@njmsa.umdnj.edu (Rene Johe) writes:
>Ok. So even Sony's new MD doesn't make digital copies. Does this upset me?
>
>HELL YES!
>
>Is there any way of (legally) getting a pure digital copy off MD, DAT, or
>DCC? Can I LEGALLY open up the case and change the wiring? How would this be
>done?

DAT players can make pure digital copies.  And for not too much money, you
can get one without SCMS and make unlimited pure digital copies.

But that still doesn't clone all the information on the tape.  The track
numbers and the start and stop points don't get transmited over the interface
so you loose that.

There's not likley to be a way to just change some wrires in a MD or DCC
player to allow you to clone a disk.  There's no data interchange standard
definded on how all the information would be transfered.  And there would
have to be a buch of firmware to support it.

One day, they will probably come out with a dual deck MD player/recorder
that works much like the dual deck cassette players.  It will be able
to clone a disk, track numbers and all.  But it will also include SCMS,
so you could only make single generation copies.

The neat thing about this unit is that because the player normally reads
and records at about 5x speed, you should be able to dup a 60 minute disk
in something like 15 minutes!  A 3 minute song will only take 45 seconds
to copy!  You could never make this work with DCC or DAT without making
the recorder cost a lot more.

And because the system knows exactly how much free space is left on the
destination disk, you won't have to guess if the songs will fit.  Just
pick the songs you want from the source disk and the player will tell
you whether they will fit on the destination disk - and how much free
space you will have left when you are done with the copy.

A unit like this that could play both CDs and MDs as the source disk
would be really nice.

Curt Welch
From: masc0231@rohan.sdsu.edu.sdsu.edu (Tuan J. Nguyen)
Newsgroups: rec.audio
Subject: Home Power Amplifier
Date: 12 Dec 1992 05:19:04 GMT
Organization: San Diego State University, College of Sciences
NNTP-Posting-Host: rohan.sdsu.edu
X-Newsreader: TIN [version 1.1 PL6]


Hi netters
	A old man next door just gave me a DYNACO Stereo 400 Power Amplifier
 	He toll me that I also need a Pre-Amplifier to made it works.
	Is this brand any good?  Approx. how much does it cost? and
	What the heck is the Pre-Amp. ? How do you hook them together?

	So may thanks a head for any information.
--

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         \/__/__///__///__(_/    \___/ .    /  /__(_/__/_/__(_/__\/__/ /__
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		          ________|____________________________________|__     
      San Diego State University  | Email ->  tnguyen@saturn.sdsu.edu  |     
    --^---^-----^-----^---------- |        -> jnguyen@eis.CalState.Edu |
           	              ~~~~|~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|~~~~
								       |
From: lauusitalo@tnclus.tele.nokia.fi
Newsgroups: rec.audio
Subject: Need info about Celestion 15"!!!!
Date: 20 Dec 92 19:19:08 GMT
Organization: Nokia Telecommunications.



I have Celestions 15" element. And I need parameters for this element.
Is there somebody who could tell me Small/Thiele and other vital parameters?
I do not remember the type but I could get it if somebody has access
to these parameters. It is rated 250W and thats all I remember.

Thanks,
Lauri


-- 
-------------------------------------------------------------------
Lauri Uusitalo                 I          "Life is hard,          
lauri.uusitalo@ntc.nokia.com   I                then you die..."  
Newsgroups: rec.audio
From: sikorsky@ee.ualberta.ca (Mike Sikorsky)
Subject: Planars and stuff...
Organization: University Of Alberta, Edmonton Canada
Date: Fri, 18 Dec 1992 00:01:06 GMT

How easy everything would be if *everyone* agreed on the best speaker
design...

My reasoning behind getting planars is this:

I cannot afford really exotic cone/box designs that WILL do justice to how
music should be played (B&W 801, Thiels, Mirage, etc...), so it seems to me
that I should go for a design that almost does this.  Well knowing the 'lack'
of low bass from planars, I readily accept that the rest of the audio
spectrum that they do reproduce readily can outperform even the most costly
box designs.  Why, then, would/should I pay countless dollars just to
reproduce a range of music (15-45 Hz) that is generally absent from most
recordings?

It makes sense to sink most of your money into what you hear most of the
time; spending extra to get the deep bass and comprimising on everything
else is foolish.  Of course, if one can afford the ultimate in box
designs, then hey, this is moot.

Why, then, are most people concerned with quantity of bass, rather than
the quality of it?  (sounds familiar...8-) )

Perhaps I should keep the box speakers beside the planars and switch
between them when people come over, just to shake them....

Could the militant box defenders then recommend designs that are
comparable to planars in quality and imaging and soundstage, in the same
price range?  I haven't found any yet...



Newsgroups: rec.audio
From: howdii@patty.gud.siemens.co.at ()
Subject: Do I really need 200W?
Date: Thu, 10 Dec 1992 16:58:02 GMT
Organization: SIEMENS Austria Corp., A-1100 Wien, Gudrunstr. 11
X-Newsreader: Tin 1.1 PL5

You have to decide yourself, if you need really 200W. 
Here some examples:
e.g., you have a speaker with a SPL of 90 dB/W/m. (SPL = sound pressure level)
To sense, that music is louder, you have to power up for 3 dB.
To get music louder for 3 dB, the amplifier must send double power to
the speakers as in the moment before.

So here is a list of SPL and W according to the example:

   1W ....  90 dB
   2W ....  93 dB
   4W ....  96 dB
   8W ....  99 dB
  16W .... 102 dB
  32W .... 105 dB
  64W .... 108 dB
 128W .... 111 dB
 256W .... 114 dB
 512W .... 117 dB
1024W .... 120 dB

I suppose, a HIFI-speaker with a SPL of 90 dB/W/m can reach a max. SPL of
about 110 dB/W/m before beeing destroyed by overpowering. At least, 120 dB
will let your ears tingle. You see, Watts are not all. 10 W with the speaker
described above will be about 100 dB, and this is much noisy in a normal
room. 
The initial SPL of a loudspeaker is according to the drive units built in,
and not to forget - to the enclosure type.
Compact (closed) boxes have normally a very low initial SPL (about 80 dB/W/m)
bassreflex boxes are normally a little bit better (about 90 dB/W/m),
transmissionline boxes have also low SPL,
only horn boxes have a very high SPL (about 100 dB/W/m and over).

Look at my situation: my self-designed transmissionline box, using FOCAL
drive units, is working very fine and gets a SPL of 87 dB/W/m. My ampifier 
(Benytone X-Calibre) has 200W, but I don't really need them, when I'm playing
very noisy, funky, jazzy, groovy, it only requires about 30W up to 100W.
This is quite enough. Or will you blow your brain out through your ears?
Then you can point to your left ear with your finger and say to your friends:
'Can you see the light?'.

So, if I could help you, let me know it.
howdii, Austria (Europe).
Newsgroups: rec.audio
From: rmcghee@fnma.com(Rich McGhee)
Subject: FOR SALE:  HK Integrated Amp
Reply-To: rmcghee@fnma.com
Organization: Fannie Mae
Date: Mon, 14 Dec 1992 14:17:32 GMT

FOR SALE:  HK Integrated Amp
$450 or best offer

Harmon Kardon PM655Vxi

Average Power:  90 Watts @ < 0.08% THD into 8 ohms   (20-20,000Hz)

Instantaneous Current Capability:  45 Amps

Signal/Noise :
	Phono		80db
	Video/CD	98db
	Main-in		110db

** Preamp and/or main amp can be used separately or integrated

Tone Control Characteristics:
	Bass Turnover Freq:	200Hz/400Hz
	Treble Turnover Freq:	2kHz/6kHz

Filters:
	Subsonic and High cut

Phase Correct Loudness

Dimensions	17.5"x5.25"x15.8"

Weight:		25 lbs.

It has been a great unit.  I have never had a problem with it.  It does  
not run
very hot either.  I have manuals and packing materials.


--
Rich McGhee, Advanced Technology
Federal National Mortgage Association
3900 Wisconsin Avenue, Wash DC 20016
NeXTMail: rmcghee@fnma.COM
Newsgroups: rec.audio
From: sikorsky@ee.ualberta.ca (Mike Sikorsky)
Subject: Magneplanars again...from he who wishes to know.
Organization: University Of Alberta, Edmonton Canada
Date: Mon, 14 Dec 1992 15:51:10 GMT

Phew!  Such high praise!  Maybe I do trust my ears now...

I've now commited myself to the 2.6R models, money pending.  Of course,
just to make things *really* interesting, the car has decided that it
needs $700 in repair...8-)  (does this happen to anyone else?)

Despite the fact that my small environment will hasten the sound, I feel
that buying for the future is paramount.  As I've noticed from the many
replies I've received (thanks!) the Maggies will last a long time, barring
any wild cats and drunk friends...8-)

I've come up with some really trivial matters now:

- what is the preferred trim and cloth cover combination?  I'm fond of
  black/black, but that combination tends to show off how dusty my
  environment is...I noticed a post mentioning the cover will affect
  the audio...I don't see how different colors do this, unless of course
  there is a marked physical difference between the white/black 'socks'.

- is each speaker stable, physically?  Do the stands/feet brace the system
  well?  These would be near a heavy traffic zone, and who knows what stray
  air currents could do...8-)  Are spiked feet and Uranium weights a nice
  touch to stiffen the planar?

- I haven't seen the 2.6's in a while, and I have poor pictures of them;
   do they stand perpendicular to the floor, or are they slanted somewhat?

- are they mirror images of each other, with a dedicated L/R setup?

- how well matched are they to each other?  Some box (ugh!) designs are
  tuned slightly different in respect to each other, hence the sound can
  be inbalanced...I'll test at the dealer, anyways, but personally, it
  doesn't seem like planars can really be 'tuned' in any way (correct me
  if I am wrong) other than physical placement.

- I'll definately post my experiences at the dealer and my listening room
  impressions again.  When I buy, i'll no doubt be seeking advice on
  a few matters, so stay tuned.  I'm probably going to dive in and get them
  between Xmas and mid January, cash pending.

Once again, a wicked huge thank you to all replying parties for advice and
support.

(I'm also going to drag down some non Maggie owners and convert them...)

MXmas.
From: "herb chong" <herb.chong@channel1.com>
Newsgroups: rec.audio
Subject: mobile fidelity....
Date: 20 Dec 92 21:43:46 EST
Reply-To: "herb chong" <herb.chong@channel1.com>
Distribution: rec
Organization: Channel 1 Communications

PS>The claim is that, since gold is a more malleable material than alumin
PS>the gold foil will adhere more closely and more smoothly to the pits i
PS>CD, thus providing a better surface to be read by the laser, and reduc
PS>number of read errors.  As far as I know, nobody has ever conducted ex
PS>to test this hypothesis.  I noticed that MFSL has stopped making this 
PS>in their packaging of Ultradiscs.  I think maybe the Federal Trade Com
PS>got after them and told them to either back up the claim with facts or
PS>making it.

considering that the gold is electroplated, i don't see how the mechanical 
properties of gold make any difference. the chemical properties do make 
some difference though it remains to be seen whether the difference is 
high enough to matter. gold is more corrosion resistant.

PS>For both CD rings and gold plating, another claim that has been made b
PS>proponents is that, although the error correction logic may correct an
PS>errors, the invocation of this circuitry leads to second-order jitter 
PS>in the power supply of the CD player, effects that are picked up by th
PS>and analog components of the player and that result in audible distort
PS>Once again, there haven't been any properly conducted studies to deter
PS>the validity of the claim.

the error correcting circuitry is running all the time, so i kind of doubt 
it, but in a badly shielded system, there could be crosstalk from the 
digital section into the analog section. my Soundblaster Pro is close 
enough to the CPU and not shielded well enough that i can tell if my PC is 
hung or not by listening to the sound from the speakers connected to the 
Soundblaster.

Herb...

---
  WinQwk 2.0 a#314  And God said: E = mv - Ze/r, and there was light!
--
Channel 1 (R)   Cambridge, MA

Newsgroups: rec.audio