HDTenEightyP/NetNews huggingface dataset:
From: wns1@ns1.cc.lehigh.edu (WANTYA NAJADI SAPARDAN)
Newsgroups: rec.audio
Subject: Re: Help? Surround Sound Amplifiation Suggestions
Date: 16 Dec 92 04:50:14 GMT
Organization: Lehigh University

In article <1992Dec11.223855.19544@speedy.aero.org>, jcd@punch (John C. Davis) w
rites:
>I have an investment in my stereo and would like to upgrade to Dolby Pro
>Logic without scrapping my initial investment. I would like suggestions on
>how to add amplification to my system. (eg integrated amplifier w/ Pro
>Logic, Pro Logic w/o amplification and seperate amplifier etc...)
>
>My current system is:
>
>Adcom GTP 500? Remote Control Preamplifier
>Carver 1.0t Amplifier
>B&W DM 220 Speakers
>
>Any suggestions would be appreciated?
>John C Davis
>jcd@punch.aero.org
>
I would suggest that you try the Yamaha DSP E1000 surround processor.  I
bought it about 3 months ago and it cost me around $850.  Currently, to power
the rear effect channel I use my roommate's Adcom GFA 545 (My main amp. is
Adcom GFA 555) and for the center channel I use the processor built in amp.  I
would also strongly suggest that you try the new Adcom GFA 2535 amp (list for
about $600) for the surround system.  This system is basically two GFA 535 in
one container with bridging capability - if one of the amp is bridged, then you
will get one channel with 200W (center) and two channel with 60W each (rear).
Or you can use it as a four channels amp. with 60W/channel.


                                                            W. Sapardan
Newsgroups: rec.audio
From: glk9533@tm0006.lerc.nasa.gov (Greg L. Kimnach)
Subject: Re: >Why do people buy speakers that cost >$1000/pair ?
News-Software: VAX/VMS VNEWS 1.41    
Organization: NASA Lewis Research Center / Cleveland, Ohio
Date: 18 Dec 1992 13:05 EST  

In article <184585@pyramid.pyramid.com>, lstowell@pyrnova.pyramid.com (Lon Stowell) writes...
>>(Kirk Lindstrom) writes:
>>> Kirk (can't wait to read Dick P's reply) out
>>>
>In article <1992Dec9.181202.25495@porthos.cc.bellcore.com> gfl@herahera.cc.bellcore.com (lenahan,grant f) writes:
>>You missed it already!
>>
>>BTW, why does everyone think that designing _ANYTHING_
>>well is easy?  Isn't that a bit arrogant?
>>
>    No, it is called "the confidence of ignorance".   The original
>    poster's knowledge was so little that they were unaware of what
>    they didn't know....or the more you know the more you are aware
>    that you DON'T know.
> 
> 

Actually, I would say that a little knowledge is dangerous....  And this
newsgroup has reaffirmed this tenet many times over! 

> 
Greg
--------------------------------------------------------------------------- 
                         ED-Beta: Simply THE BEST!
"ED Beta is simply the best consumer videotape format available."
                                     --VIDEO Magazime, Nov. 1992, page 30.
---------------------------------------------------------------------------
Newsgroups: rec.audio
From: jim@stargate.helios.nd.edu (Jim McCusker)
Subject: DAC to ADC components? Snake Oil??
Organization: OUC, University of Notre Dame
Distribution: rec.audio, sci.electronics
Date: Mon, 14 Dec 1992 23:53:18 GMT

Hi, 
 I just recently say a Marc Levison #30 A-to-D connected to a CD players 
digital output.  Why bother I ask?   How much better can such a component
produce than my current CD player.  A (excuse the spelling) Nachamici CD
Player 2.  
   Just curious.
         -- Jim

Newsgroups: rec.audio
From: gds@cbnewsi.cb.att.com (glenn.d.strouse)
Subject: Re: Looking for opinions on cd changers
Organization: AT&T
Distribution: usa
Date: Thu, 17 Dec 1992 20:48:01 GMT


    Two more that come to mind are Kenwood and Onkyo. With the 
    Onkyo being my first pick.



    Glenn
Newsgroups: rec.audio
From: monitn@rebecca.its.rpi.edu (Nicholas Monitto)
Subject: Re: ANY COMMENTS ON SONY TAPE RECORDER TC-K620
Date: Wed, 16 Dec 1992 08:11:20 GMT

keivjam@elof.iit.edu (James Keivom) writes:


>I just got a sony tc-k620 stereo deck recorder and i wondered if anyone had
>any problems with it?  how different is it as compared to the sony tck-690?
>how is the frequency response?  does it have a remote?

A friend of mine owns a 620 cassette deck. I would have bought one if I'd had
the money, but then the 670 came out. I would've bought that, but now the 690
is out and I still don't have the money. Talk about turnover... :)

Seriously, the deck has performed very well for him and me. I've made several
recordings on it myself and never had a problem. Neither has he. I don't have
any specs on its FR, but I know that it is probably close to the 670's, which
is listed as 30-18000Hz (Sony literature).

It does not come with a remote itself, but you can (or at least you could)
buy a small remote that worked with nearly any Sony cassette deck. Also, some
Sony receivers have remote controls which will work on Sony model decks.

Differences- the 690 has a different means of calibration which affects bias
and record level (i think the 620 only had bias). The 690 has a CD direct
input (a second set of line-level RCA inputs). The 690's display is slightly
different. Also, I think the 620 has only 1 capstan (memory's bad on this
detail) whereas the 690 is closed-loop dual capstan.
 
>thanks

>jim

Nick
monitn@rpi.edu

Newsgroups: rec.audio
From: zzjim@stein.u.washington.edu (Zeming Gao)
Subject: summary on 'questions about preamps'
Organization: University of Washington, Seattle
Distribution: usa
Date: Sun, 13 Dec 1992 08:49:50 GMT


i asked some questions about preamps and headphone outputs and 
got many helpful answers. Most of the answers agree on same
points. Following is a very sort summary with some questions i 
may still ask:

1, Variable output of some CD players works in principle as
   a passive preamp. But the performance might be in question
   for some mid or low prized models.
 
   (all the answers i got about this mentioned the possible 
    noise adding problem, but nothing about the linearity,
    distortion and some dynamic aspects. Are these only the 
    matter for power amps?)

2, In the similar way, low-end receiver's pre-out, if there is
   one, may not be doing the justice well in a higher setting.
   
   (But people have different opinions about how these pre-outs
   compared to CD player's variable line out)

3, Headphone output is in principle a little "power amp", and
   they may have a wide range of performance. For serious
   headphone listening, specialized headphone amp is suggested.

   (But why is it so? i did some calculation and found the 
    voltage output from headphone outs is typically under 0.5V  
    while that of CD line outs is 2V. How could it be so that
    headphone out goes through an amplification stage yet line
    out does not? Maybe i totally missed the point)

4, Again, people don't agree on the issue of comparison between
   headphone outs of CD players(<$400) and that of low end 
   receivers. One netter says that receivers might more likely
   be better because the amplification is what a receiver 
   is supposed to be doing anyway.

 Okay, nice talk. Thanks for all the answers.

-jim
From: george@ucs.ubc.ca (George Chow)
Newsgroups: rec.audio
Subject: Summary of "How to tape a 1h radio pgm" and deck maintenace Q's...
Followup-To: rec.audio
Date: 19 Dec 1992 21:30:46 GMT
Organization: University Computing Services, UBC, Canada
Distribution: world
NNTP-Posting-Host: swiss.ucs.ubc.ca

Thanks to the four individuals who responded to my query about taping an
hour-long radio program and the reliability of 110min tapes. They are:

  law40001@nusunix1.nus.sg (CHENG KWONG WING)
  co940@cleveland.Freenet.Edu (Nicholas E. Damato)
  strong@tc.fluke.com (Norm Strong)
  "Todd R. Haverstock" <mutrh@uxa.ecn.bgu.edu>

One alternative route that was frequently suggested was to use a stereo VCR. 
I was aware of that but since I do not have a VCR, that rules that out.
All in all, nearly everyone approved of the use of the TDK 110min tapes.
However, it was noted that you have to be very meticulous about keeping
the deck clean. So, on this upbeat note, I have bought two MA110 and I'm
gonna try them out. 

And onto some questions of maintenance. What kind of cleaning fluid should
I be using? I recall (I think from Norm) from some previous posting that
the best is to use Teac's rubber cleaner and conditioner for the pinch
roller. My deck's manual recommend the use of a "zero-residue
flourocarbon-based fluid" for everything. Can anyone explain the latter? I
can understand Norm's suggestion since any alcohol-based fluid would tend
to dry the rubber. So, an alcohol-based fluid can be used for the heads.
So what is this flurocarbon stuff that the manual is recommending? 

A second question is wrt demagnetizer. I ask this previously but got
no response. Which type of demagnetizer are better, the wand-type or the
cassette-shell-mounted type? Which heads needs to be demagnetized? And are
there anything to look for in a demagnetizer? I've seen $15 all-in-one
head-cleaner/demagentizer and also $30 demagnetizers. What's the story
here?


George
From: co940@cleveland.Freenet.Edu (Nicholas E. Damato)
Newsgroups: rec.audio
Subject: Re: FOR SALE:  HK Integrated Amp
Date: 18 Dec 1992 19:47:27 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


Just for the record, I think that the HK integrated amp is a
really great bargin. the specs. don't look that incredible but
i've heard them and i think they have a really nice unsterile
warm sound, and very clean even at moderately loud playing volume.
I almost bought one myself.
ned.
Newsgroups: rec.audio
From: keivjam@elof.iit.edu (James Keivom)
Subject: ANY COMMENTS ON SONY TAPE RECORDER TC-K620
Organization: Illinois Institute of Technology, Chicago
Date: Wed, 16 Dec 92 00:49:51 GMT


I just got a sony tc-k620 stereo deck recorder and i wondered if anyone had
any problems with it?  how different is it as compared to the sony tck-690?
how is the frequency response?  does it have a remote?

thanks

jim


From: kirk@hpcc01.corp.hp.com (Kirk Lindstrom)
Date: Sun, 20 Dec 1992 12:23:22 GMT
Subject: Re: Pink Floyd Set
Organization: Shredding the water of SF Bay, HP-OCD
Newsgroups: rec.audio

>>kong> I went to Tower Records yesterday and saw the new Pink Floyd
>>kong> set. It was on sale for $119.95. Has 8 "Remastered" CDs. I
>>kong> hesitated to make the purchase for I own all the discs that are
>>kong> included in the set.               ^^^^^^^^^^^^^^^^^^^^^^^^
>>You couldn't own ALL the disc. One of the disc's in the set is suppost
>>to be a collection of singles from the early years...
>	It is possible, as there are several soley british and Italien 
>releases of PF. They were never released in the main stream, and are very 
>hard to get your hands on. 
----------

My BIG question is: "How does the remastering of these sound compared to
MFL, the original, and/or some of the other remasterings?"  I don't own
any of the PF CDs and plan to buy some after xmas.  I was considering
MFL "Dark Side of the Moon" and "The Wall" for starters.  MFL versions
would put me back about $50 so if these are of similar quality, I'd get
alot more music/$.

Thanks
Kirk out
From: sss@castle.ed.ac.uk (S S Sturrock)
Newsgroups: rec.audio
Subject: Re: I just tested DCC and MD...
Date: 17 Dec 92 11:30:54 GMT
Organization: Edinburgh University

In article <ATOSSAVA.92Dec15175606@kruuna.Helsinki.FI> atossava@kruuna.Helsinki.FI (Atro S Tossavainen) writes:
>In article <HxS=8d@engin.umich.edu> Formats <id=6003@um.cc.umich.edu> writes:
>
>> (If you read the [DCC/MD] ads, you have to really look to see a mention
>> of the fact that a compression is used during recording).
>
>   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?

Depends a lot, if Philips can prove that for say a comparison of full 16 bit
rate with PASC 18 bit encoding gets as close to the master regardless of
either systems flaws then they are of equal quality.  In fact, when I first
heard DCC back in April Philips were claiming it was better than CD because
it has better signal to noise and dynamic range.

I did an intresting test recently with a DCC deck and recorded a CD through
the analogue inputs, the sound was actually slightly clearer from the DCC!
What I did notice though was an almost subconcious feeling of `holes' in
the soundfield.

On the other hand, the DCC deck didn't sound much different from any other
digital deck I have heard.  Poor.


-- 
Shane Sturrock, Biocomputing Research Unit, Darwin Building, Mayfield Road,
University of Edinburgh, Scotland, Commonwealth of Independent Kingdoms.  :-)

Civilisation is a Haggis Supper with salt and sauce and a bottle of Irn Bru.
From: ryu@husc10.harvard.edu (William Ryu)
Newsgroups: rec.audio
Subject: THIS IS A TEST
Summary: just a test
Date: 15 Dec 92 17:35:46 GMT
Article-I.D.: husc10.ryu.724440946

Just a test.

BTW:  MD vs.  DCC

	I think MD will knockout DCC in the 4th round.
Newsgroups: rec.audio
From: kurt@dna.lth.se (Kurt Swanson)
Subject: Re: Europe power vs US Power
Organization: Lund Institute of Technology, Sweden
Date: Fri, 18 Dec 1992 11:29:57 GMT

Ryan Scott <RSCOTT@auvm.american.edu> writes:
>I a I am planning on buying a portable CD player nad battery powered speakers.
> Now the trick is that I am going to Europe next semester and I do
>not necessar 
>ily want to use batteries.  Now can I buy a DC converter over there that would
>provide the same voltage as a US adaptor?  Can I neglect the cycles difference
>and no have to worry about the  DC voltage being any different?????

You absolutely don't want to use batteries!  They are SO expensive
here...

You can buy universal adapters here, or you can use your US adapter
connected to a voltage transformer.  You need not worry about cycle
differences.  If you plan on the former, consider that many CD makers
use special plugs on their adapters so that you have to buy theirs!
(YES, I'M SPEAKING ABOUT SONY!)  You can, snip the plug from the US
adapter they sell you in the US (as I did), or pay through the nose
and buy a European adapter from the same company, or buy a CD player
that uses STANDARD plugs...  The choice is yours...
-- 
Kurt Swanson, Dept. of Computer Science,
Lunds universitet.  Kurt.Swanson@dna.lth.se
-- 
Kurt Swanson, Dept. of Computer Science,
Lunds universitet.  Kurt.Swanson@dna.lth.se
Newsgroups: rec.audio
From: ianchan@leland.Stanford.EDU (Ian Hin Yun Chan)
Subject: Re: PROBLEM: Hooking up my system
Organization: DSG, Stanford University, CA 94305, USA
Date: Tue, 15 Dec 92 08:38:03 GMT

In article <11900009@hpmwnpd2.sr.hp.com> allana@hpmwtd.sr.hp.com (Allan Armstrong) writes:
>>I have a pioneer vsx-4900s receiver and cerwin vega dx-7 speakers.  
>>Now the problem is that cerwin vega is rated at 4 ohms and the pioneer
>>receiver is to be used at 8 ohms.  I fear that hooking up these would
>>result in some damage to the receiver.  How can I fix this problem? 
>>Should I use my advents to hook up to my receiver along with cerwin
>>vegas?  Any suggestions would be appreciated.  
>
>What you need is a 2:1 impedance transformer. Rather than spending big
>bucks for one of these, you can make one yourself. Take a cylindrical
>object such as an empty toilet paper roll or a pencil and wrap some wire
>around it. Take a piece of wire with two turns and connect it to the 8
>Ohm receiver. Use another piece of wire with one turn and connect it to
>the 4 Ohm speaker. Use some quality cement such as Elmer's to keep the
>wires from coming unwound. Viola!
>
>;-)
>
>Allan

Errr... don't you think such a transformer would be grossly inefficient?
A normal 110V to 220V transformer would be better (or anything that has a
1:2 ratio). The amp should plug into the higher voltage side of the
transformer. My only worry is what would happen at low frequencies. Might
the transformer present an even lower impedence at low frequencies?
- Ian

Newsgroups: rec.audio
From: nau@quesadilla.ssesco.com (William Nau)
Subject: Re: HX-Pro function of tape deck, information needed!
Organization: SSESCO
Date: Sun, 13 Dec 1992 02:39:50 GMT

In article <1992Dec10.140305.4757@panix.com> schuster@panix.com (Michael Schuster) writes:
>In article <2B2664A7.445@news.service.uci.edu> tao@balboa.eng.uci.edu (Eric Yihching Tao) writes:
>>I recently bought a YAMAHA KX-250 tape deck, it sounds really good and
>>the recording is great, too. But one thing that puzzles me is the HX-PRO
>>function, how does it work? Does it interfere with Dolby B & C? Should I
>>used Dolby NR when I record from CD since it has the HX-PRO?
>
>HX-PRO dynamically under-biases the tape during high frequency peaks, to
>reduce the effect of tape saturation. It does not replace any form of noise
>reduction, so continue to use your Dolby B or C for recording from all
>sources.

I feel that I must include that HX-PRO has some problems.  I've recorded
several LPs onto cassette tape on a deck that uses HX-PRO.  For some reason
HX-PRO introduces a terrible pulsating in the high frequencies at some
points during the recording.  This is at a level that is unbearable
for long periods of itme.  Thankfully, it rarely last more then ten seconds.
It seems to be most common when recording a record (not CD) onto a Metal
(type IV) tape.  I highly suggest that you look for a unit that allows you
to disable HX-PRO when this occurs.

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
Newsgroups: rec.audio
From: gfl@herahera.cc.bellcore.com (lenahan,grant f)
Subject: Re: Slew Rate
Organization: Bellcore, Livingston, NJ
Date: Wed, 16 Dec 92 20:54:50 GMT
Summary: wrong-o

ferguson@tc.fluke.COM (Ed Ferguson) writes:
> The formula I picked up is:
> 
> fmax = (slew rate / (6.28 * Vop)) * 1,000,000
> 
> fmax = the maximum frequency the amp can pass
> with an output of Vop, undistorted due to
> slew rate limiting.  Example:
> 
> My 40 watt class A amp has a slew rate of
> 10V/uS.  At 40 watts into 8 ohms, the peak
> output voltage, Vop is 28 volts.  Plug 10
> and 28 into the formula and find that
> 57 kHz is the max freq before slew rate
> induced distortion occurs.

So far, so good.

>  Note that this
> is unrelated to bandwidth, which is 500 kHz
> for this amp!

Not quite (you may know this, but its not clear).

Your full power bandwidth is 57 kHz.  Your small
signal bandwidth may or may not be 500 kHz.  I
presume they don't lie.

Just clarifying.

Grant
gfl@hera.cc.bellcore.com
Newsgroups: rec.audio
From: ichong@oracle.com (Ivan Chong)
Subject: Sony CDP-225
Organization: Oracle Corporation, Redwood Shores, CA
Distribution: rec.audio
Date: Tue, 15 Dec 1992 17:29:17 GMT
X-Disclaimer: This message was written by an unauthenticated user
              at Oracle Corporation.  The opinions expressed are those
              of the user and not necessarily those of Oracle.


I'm looking into buying a Sony 5-CD carousel player, the
CDP-225.  I've seen it consistently advertised for $200.

Has anyone seen it advertised for less?
From: rmaher@unlinfo.unl.edu (rob maher)
Newsgroups: rec.audio
Subject: Re: Specs. on CD players
Date: 11 Dec 1992 22:13:12 GMT
Organization: University of Nebraska--Lincoln	
Distribution: us
NNTP-Posting-Host: unlinfo.unl.edu

brad@buck.viewlogic.com (Bradford Kellogg) writes:
...
>There is no way you can make an intelligent purchasing decision based on
>this information. It is *meaningless*. It is of no more use to you than
>knowing if a car you are interested in buying has worm and roller or rack
>and pinion steering.

>The specific technology used doesn't matter. What is important is how well 
>the technology is implemented. A Sanyo for $99 might use the same technology 
>as a Rotel for $500. Which do you suppose is the better implementation?
                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

AHA!  So it is the PRICE that makes the difference :-)

R. C. Maher

Newsgroups: rec.audio
From: kong@leland.Stanford.EDU (Kong Kritayakirana)
Subject: CD SOund QUality
Organization: DSG, Stanford University, CA 94305, USA
Date: Sat, 19 Dec 92 15:18:54 GMT

MJF9968@rigel.tamu.edu wrote:
> Further proof of how one-track-minded people have become
> for the storage and reproduction of music.
>
> In other words, yet another "critical listener" who auditioned
> a $200 CD player versus a $200 phono set-up and decided
> that digital is inherently better than analog.  *sigh*
>
> Living better through chemistry,
> Mike "Pi" Freeman
> MJF9968@rigel.tamu.edu
>
> PS--  I've been wondering: would it be possible to have
> an optical, analog format?  Aren't LDs effectively
> that?  Wouldn't such a system give us the best of
> both worlds: durability, convenience, *and* sound
> quality?

You make it hard to answer your mail. You DID NOT make any argument. Who told
you that I was using $200 CD player? Who told you that I was using $200 phono?
You obviously did not know ANYTHING about my system. What made you make such
a statement? Your mail is just a shot by an incompetent person dissatisfied
with the point I have made. If you see the issue otherwise and have airtight
arguments, use it. Otherwise don't write this kind of shit.

I am doing a PhD in EE specializing in adaptive digital filtering and I am a
musician and hifi fanatic.
From: jberger@novell.com (John Berger)
Newsgroups: rec.audio
Subject: Re: Mobile Fidelity....
Date: 14 Dec 92 19:41:23 GMT
Distribution: na
Organization: Novell, Inc.

In article <1992Dec14.172739.26180@oakhill.sps.mot.com> rvkl60@aus18a25.sps.mot.com (Tom Mathes) writes:
>From: rvkl60@aus18a25.sps.mot.com (Tom Mathes)
>Subject: Re: Mobile Fidelity....
>
>As for sound quality, I do notice a difference.  I listened, back
>to back, to the standard CD issue of Pink Floyd's "Dark Side of
>the Moon", and the MF version.  The MF version has *much* more
>pronounced deep bass.  For example, the drum "heartbeat" at the
>opening and ends of the disc aren't that dramatic on the standard
>CD issue; they sound much more realistic on the MF issue.  The music
>seemed to take on more "air" about it.  I thought I was just
>imagining things, but I could more easily pick out individual
>sounds/instruments/voices on the MF release than on the standard
>release.
>
>Same goes for Floyd's "The Wall".  The standard CBS CD issue 
>sounds pretty good, but the MF pressing has superior sound,
>IMHO.  Bass again is more defined and deeper/louder, the
>transients aren't compressed sounding, but unfortunately,
>tape hiss is more pronounced sounding.  

>If you *really* like the musical piece, buy the MF release.  To
>me, it's worth the money if you want the best possible sound.

I had the same experience with "Goodbye Yellow Brick Road" by Elton John.  
To top it off, the standard release was on two disks, and the MFSL was on 
one disk.  Better sound (again, more 'air' and better bass), and no disk 
changing.  Two good reasons for this disk.  Unfortunately, once you have 
actually trained your ears to hear the difference, you will always know that 
it's there, so beware....you could build an expensive habit (if you haven't 
done so already with your equipment)!

John