HDTenEightyP/NetNews huggingface dataset:
From: lenny@iti.gov.sg (Lenny Lim Kiong Peng)
Newsgroups: rec.audio.car
Subject: Re: Best Buys for '92 or '93
Date: 9 Jan 93 01:57:23 GMT
Organization: National Computer Board, Singapore

The following is what I got from Car Hi-Fi, a UK magazine...

Best New Concept                   Sony Unilink
Best Combination Unit < L250*      Panasonic CQ-D55
Best Combination Unit > L250*      Alpine 7619R
Best CD/Tuner                      Sony CDX-5181
Best RDS Unit                      Panasonic CQ-RD50
Best CD Autochanger                Kenwood KDC-C600
Best Bass Tube                     Pyle RP1000
Best Amplifier                     Denon DCA-800
Best Speaker Series                Quart QM328CX
Best Security System               Cobra 6009

* The L is, of course, the pound sign (its a UK mag after all...)

Some runner-ups were discussed in the magazine, but its rather lengthy and I
won't include them in this post.


Kiong Peng
From: elef@smarmy.Eng.Sun.COM (elaine 'beano' leffler)
Newsgroups: rec.audio.car
Subject: to amp or not to amp?
Date: 6 Jan 1993 19:43:06 GMT
Organization: Sun Microsystems
Distribution: world
Reply-To: elef@smarmy.Eng.Sun.COM
NNTP-Posting-Host: smarmy.eng.sun.com

thanks for all the info on detachable faceplate technology - i've 
decided to buy the pioneer DEH680 in-dash CD unit.  now i find (bear
with me if this sounds like nonsense, i'm one of the Stereo Impaired)
that this player has a built-in 2 channel amp, but the car i'm putting
it into is equipped with 4 speakers.  according to the people at circuit
city (surprisingly low bullshit level, it SEEMS) i can either do the
factory-correct install and buy an external amp to enable me to use
all 4 speakers, or they can do some fancy wiring footwork and wire
the stereo to 4 speakers.  in this case, i'd lose the functionality of 
either the fader or balance control (i can do without the balance 
and not lose any sleep over it).  i'm wondering what the catch is - 
what else would i be losing by not adding the external amp?  i'd prefer
not to spend the money for the extra amp if i don't have to, and i'm
not a huge audiophile, i'm not going to be anal about having perfect
sound in my economy car!

responses in non-EE terms appreciated,

elef

  **...........................................................**
     Elaine 'beano' Leffler	SunConnect Customer Advocate
     elef@smarmy.Eng.Sun.Com	       (415) 336-5142
  **...........................................................**

    your sweet little cupcake, baked with the batter from HELL....

   "...technology marches on - and makes 150-mph motorcycles for
    15-mph beginners' brains."	_motorcyclist_




Newsgroups: rec.audio.car
From: worley@a.cs.okstate.edu (WORLEY LAWRENCE JA)
Subject: Re: Speaker crackle
Organization: Oklahoma State University
Date: Sat, 9 Jan 93 07:28:25 GMT

From article <1993Jan8.194313.23008@schbbs.mot.com>, by RYNA10@waccvm.corp.mot.com (Jay Kopycinski):
> ------------------------- Original Article -------------------------
> 
> I have a 89 Jeep YJ with a pull out Kenwood sterio. Since I am restricted
> to 4X6 speakers it quite treblelly but thats not problem. Due to the wind
> noise and my lust for loud music I need to turn the radio up pretty high to
> get satisfaction. The speakers crackle but it isn't due to the speaker
> magnet bottoming out (I think). The root of the problem seem to be these
> electrolytic capacitors on the speaker lines. I didn't put them there, they
> were initially used in conjunction with a Kicker. I dont want to get a
> kicker but there is some funky wiring going on down there with the ELC's. I
> am wondering if I should just bypass the whole capaciter garbage. I would
> also appreciate knowing what the purpose of these capacitors is. I know
> electronics so feel free to go into detail. Thanks for your help
> 
> 
>                                          -ed
> 
> 
> CHECK TO SEE IF THE ELECTROLYTICS ARE POLARIZED OR NOT.  ANY ELECTROLY-
> TICS USED FOR CROSSOVERS SHOULD BE OF THE NON-POLARIZED VARIETY.  IF
> POLARIZED CAPACITORS ARE USED THEY WILL EVENTUALLY FAIL AND START TO
> "CRACKLE".  THIS IS DUE TO DIELECTRIC DAMAGE CAUSED BY REVERSE POLARITY
> SIGNALS BEING APPLIED TO THE CAPACITORS.  DUNNO IF THIS IS YOUR PROBLEM
> BUT YOU MIGHT WANT TO CHECK.
> 
> THE CAPS WERE MOST LIKELY USED IN SERIES ON THE 4X6'S TO ACT AS A HIGH
> PASS FILTER.  THIS WOULD BLOCK THE LOW FREQ SIGNALS (MEANT FOR THE
> SUBWOOFER) FROM GOING TO THESE SPEAKERS.  IF ALL YOU ARE RUNNING NOW
> ARE THE 4X6'S, THEN YOU COULD REMOVE THE CAPS AND LET THE FULL AUDIO
> SIGNAL (ALL FREQS) GO TO THEM.

I disagree with your analysis.  If there are polarized caps in line, sure
they will sound awful.  However, no-one that knew to put caps in-line would
make that mistake.  You are correct, they are acting as high-pass x-overs 
for the speakers.  If the 4x6 are crackling at high-volumes, try turning
down the bass control.  If this helps the problem, then the caps (capacitors)
are too BIG.  You need smaller ones.  A smaller value cap on a speaker
INCREASES the crossover frequency.  So, lets say you have 50uF caps inline
right now.  I would change them to 22uF caps and see if that fixes it, it
will certainly help.  If you have 100uF caps or larger right now, then
they are essentially non-existant as far as the 4x6 are concerned, because
the crossover frequency is below the natural roll-off of the speaker anyway.

If you want further info, e-mail me the size of the existing caps and I'll
tell you if that's the problem.
-Jason

>
From: vincent@garnet.berkeley.edu (Vincent J. Lee)
Newsgroups: rec.audio.car
Subject: Wanted a Sony xr-7070 - Xr-7600
Date: 12 Jan 1993 20:58:10 GMT
Organization: University of California, Berkeley
Distribution: world
NNTP-Posting-Host: garnet.berkeley.edu

I'm looking for one of these head units. If you have one please call
me 510-841-4942. Call me because I want it ASAP. Thanks.
From: gt7460c@prism.gatech.EDU (SHERIDAN,BRADLEY RYAN)
Newsgroups: rec.audio.car
Subject: Re: Overheating CDs
Date: 6 Jan 93 00:52:55 GMT
Organization: Georgia Institute of Technology

In article <1993Jan5.183155.11352@wdl.loral.com> trw@spl1.spl.loral.com (Tim R Witort) writes:
>A few people mentioned Pioneer in-dash CD players
>that make the CD hot when it is played.  I've noticed
>the same thing with my Sony 4040 in-dash CD player.
>Is this a normal thing for ALL in-dash CD players?
>Owners of other brands please respond...
>
>-- Tim
  I had a Sony 7580 pullout CD player w/ amp. It never heated up my CD's, but
I didn't use the built in amp. I did have problems with it skipping though...

  Does anyone know of a CD changer that has an FM tuner but doesn't require a 
head unit? I would like to get a changer, but don't have a head unit, and
don't want to install another one.

Thanks for any help
Brad
-- 
SHERIDAN,BRAD
Georgia Institute of Technology, Atlanta Georgia, 30332
uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!gt7460c
Internet: gt7460c@prism.gatech.edu
Newsgroups: rec.audio.car
From: David.Mann@launchpad.unc.edu (David Mann)
Subject: Re: Possible Reason for Hot CD's
Organization: University of North Carolina Extended Bulletin Board Service
Date: Wed, 6 Jan 1993 16:45:22 GMT

In article <demaine.726270571@ee.ualberta.ca> demaine@ee.ualberta.ca (Cal Demaine) writes:
>Just wondering -
>
>  Do those of you who have problems with in-dash CD units use the head-unit's
>amplification?  I suspect that some of the thermal problems result of the
>demands placed on the unit's amplifiers.

I have a Sony in dash (CDR-79 or something like that) which only has line-
outs and am having the same problem.  I inspected the area around the cage and
nothing (like vents/etc) is directly against the cage restricting air
flow so I guess it just naturally runs hot.  I too have unknowingly ejected
a few scorching CD's into my hand...
disks 

--
   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:  laUNChpad.unc.edu or 152.2.22.80
Newsgroups: rec.audio.car
From: RYNA10@waccvm.corp.mot.com (Jay Kopycinski)
Subject: HOT CD'S
Organization: Motorola
Date: 4 Jan 1993 09:27:56 MST

------------------------- Original Article -------------------------
Newsgroups: rec.audio.car
From: bhostetl@silver.ucs.indiana.edu (Brian Hostetler)
Subject: Temperature in car CD player
Organization: Indiana University
Distribution: rec.audio.car
Date: Thu, 31 Dec 1992 16:36:43 GMT

	When I pull my CDs out of my Pioneer after a few songs,
they are incredibly hot.  Have there been any studies on whether
this is detrimental to the CD?  Or if it is possible to melt
the ink on the label of the disc?

--
-brian

How hot is hot in your case ?
I live in Phoenix where it gets pretty warm (115 deg F) in the summer.
I've left CD's in my car changer throughout the day and have not had
any problem with them.

Jay


Newsgroups: rec.audio.car
From: jkalet@gmuvax2.gmu.edu (sk8tr)
Subject: internal pain generators
Organization: George Mason University, Fairfax, Virginia, USA
Date: Fri, 8 Jan 1993 04:50:15 GMT

I am a VERY proud owner of a Seco-larm E-300 alarm with an air-horn for
a little attention when the alarm is triggered.  My question is, does
anyone know of a company that sells internal (inside the cabin of the
car) sirens?  Namely pain generators?  I've heard this mentioned in a
couple issues of CA&E, but have been unable to locate any.  I've looked
in all sorts of catalogs and buying guides and haven't found squat.
What I mean by pain generators, is something on the level of +130dB and
at a considerably high frequency.  I've read about ones that can make a
persons ears bleed, but im kinda hesitant to believe that.  If it's
true, and for sale, please contact me.  Thanks.

jkalet@gmuvax2.gmu.edu

-- 

   sk8tr
 ________/
   o   o
From: cjm9321@hertz.njit.edu (The InfoMan)
Newsgroups: rec.audio.car
Subject: Re: Overheating CDs
Date: 7 Jan 93 23:57:08 GMT
Organization: New Jersey Institute of Technology, Newark, N.J.


	Another thing that could be causing the CDs to heat up, are the
lights of the head unit. It's just a thought since my brother's JVC
cassette head unit gets hot. Then again, he does use the internal amp.


			Just a thought.

-- 
M A D E   .   . .---. .---.    \  Buy U.S.A. products,  /    xxxxx ==========
  I N     |   |  \    |___|    <     It's YOUR job.     >    xxxxx ========== 
 T H E    |   |    \  |   |    <  Christopher J. Massa  >    ================
-------   `---' `---' '   `    / cjm9321@hertz.njit.edu \    ================
Newsgroups: rec.audio
From: daniel@netcom.com (Sam Daniel)
Subject: Re: FOR SALE: PURIST DIGITAL CABLE
Organization: Netcom - Online Communication Services  (408 241-9760 guest) 
Distribution: rec
Date: Thu, 7 Jan 1993 07:07:46 GMT

rsilvers@nynexst.com (Robert Silvers) writes:

>In article <1993Jan4.203144.27955@banana.fedex.com> mike@banana.fedex.com (Mike Bearden) writes:
>>
>>      FOR SALE: Purist Audio Design Digital Cable -----    $165
>>      List price: $350
>>      1 Meter
>>      New style with mesh
>>      price of $165 includes shipping
>>      RCA/RCA connections

>	Are you crazy?  Is this an RCA cable designed for coax digital
>connections?  You can get a PAIR of Monster cables, 1 meter, for $20 to
>$30.  Sorry, I have never tried to shoot down someones "for sale" ad
>before, but this one is hard to believe.  (We are talking about digital
>signals here, I mean, a computer is less tolerant of bit errors than a
>DAC, and people don't sell this hocus-pocus stuff for computers).
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

They might if they had to listen to the bitstream that passes through
it....

-- 
*
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: BARRON@RHQVM14.VNET.IBM.COM
Date: Mon, 4 Jan 93 08:56:07 EST
Newsgroups: rec.audio
Subject: System Improvement
Reply-To: barron@rhqvm14.VNET.IBM.COM

I am finishing up my speakers, and am considering the next level of
upgrade to the system.

Currently I have a Yamaha DSP-A1000 preamp/amp/processor.
I am using a HK Citation 19 for a power amp for the main 2 speakers.
I also use a Pioneer LD 1090 MDP for CDs.

The speakers are home brew using Eton 11-580 woofer, and Accuton 211/277
tweeter and midrange.

It is my feeling that the speakers far exceed the current rest of the system.

My thoughts are toward replacing the Amplifier, or the CD player, or
just adding an outboard DAC.

I am looking for opinions on what is better to do in what order.

I am not looking to spend more than 500-1000 on any component, so here are
the options I am considering...

For CD player either the JVC 1050 or Rotel 955/965.
For D/A option on Pioneer LD player either the PS audio $500 unit, the
CAL Sigma, or the Sumo $800 unit.

Which will give better sound, the current pioneer with outboard D/A or
the stand-alone Rotel or JVC?

For amps, I am considering an Adcom 555II or something like a used tube unit
i.e. Cary SL-70, etc.

I am strongly considering a tube amp due to the very high detail of the
speakers  (I want to 'soften' it a bit - please...no discussion on this
theory, just my application).

Would I be better going with a tube amp, or a tube in the processor (like the
Sigma).

How much will using the Yamaha DSP-A1000 for a processor hurt the sound
relative to the other components?

What is the order of improvement most favorable ...i.e. most improvement to
least improvement...

Opinions as to any/all of the above are highly valued and greatly appreciated.

Organization: Advantis Advanced Technology
Disclaimer: This reflects the poster's views, not those of Advantis
News-Software: Usenet 3.0
X-X-From: Dave Barron
From: "herb chong" <herb.chong@channel1.com>
Newsgroups: rec.audio
Subject: technics 1200
Date: 10 Jan 93 01:17:18 EST
Reply-To: "herb chong" <herb.chong@channel1.com>
Distribution: rec
Organization: Channel 1 Communications

BG>I'm assuming that you are refering to turntables.  I've noticed this a
BG>but never on the same turntable.  My 1200's stop immediately, while th
BG>at the club that I work wind down slowly.  Perhaps it has something to
BG>with the age of the unit (i.e., when it was manufactured)?

all 1200Mk2 turntables hve electronic braking that stops the platter 
completely within 1 second. if it's not stopping completely, either the 
braking has been disabled, incorrectly set, or aging.

BG>In a related subject, does anyone know how to disengage the quartz loc
BG>the pitch control?  I have heard that it makes DJ mixing a lot easier.

can't do it. that's how the pitch control works. i can't imagine how it 
would make the mixing any easier anyway.

Herb...

---
  WinQwk 2.0 a#314  Junk - stuff we throw away.  Stuff - junk we keep.
--
Channel 1 (R)   Cambridge, MA
From: dsk@ravl.rice.edu (Dan S. Kirkpatrick)
Newsgroups: rec.audio
Subject: Bose AM-5 for sale - $400
Date: 10 Jan 93 03:26:21 GMT
Organization: Rice University

I have the original AM-5 (not the AM-5 series II) for sale.

The system (2 satelites + subwoofer) is in excellent condition.

This is the system with 2 satelites, each consisting of two drivers, with
the top driver being able to rotate about 80 degrees either direction.

I am selling it with the wall mounting brackets, which are the ball-joint
type.  These normally list for about $50 by themselves.

They are in their original box.  I am selling them because my parents recently
moved to Saudi Arabia, and did not want them to take up valueable weight in
their shipment.  

Inquiries:  E-mail me at the address below, or call me at
                (713) 630-8017  (any time except mornings)

-- 
"I do not want to be immortalized through my works; I want to be 
immortalized through not dying."  -Woody Allen

Dan Kirkpatrick                 | Dept of Electrical & Computer Engineering
~dsk@rice.edu                   | Rice University
uunet!rice.edu!dsk@uunet.uu.net | Houston, TX
Newsgroups: rec.audio
From: callahan@halcyon.com (John Callahan)
Subject: Re: Radio Slack not all bad...
Organization: Northwest Nexus Inc. (206) 455-3505
Date: Mon, 4 Jan 1993 18:56:24 GMT

co940@cleveland.Freenet.Edu (Nicholas E. Damato) writes:


>Radio Shack products are basically low to mid-end products
>and they are generally pretty good compared to other
>products of that type, however what they are is over-priced.
> 
>I read a recent article in Wallstreet Journal that stated
>that Radio Shack Policy is to make 50% profit on everything
>they sell. That is why their top end of any given line never
>goes on sale until they phase it out.
> 
>If you're on a tight budget, and only buy their stuff when
>it goes on sale, you'll do pretty good. One thing they do 
>WELL is product support. I was recently able to reoutfit a
>friend's 1978 minisette-7 tape-recorder/radio with new belts,
>pinch-roller, speaker and a motor. The parts were cheap, and
>I got every-one in about 10 days. not bad.

>ned

I find Radio Shack to be a convenient source of small parts and
components that are not easily available elsewhere.  RS's profit margin
on some of these items must be at least 500%, but I don't care.
Stopping by my local RS can save me a whole afternoon of running around
to other places looking for these items. (e.g. an automobile power
converter for my portable CD player for less than the $50 that Sony
wants for this bit of not exactly Rocket Science.)

The RS Minimus7 speakers are not the best speakers in the world, but may
be the best speaker VALUE in the world -- especially when they are on
sale.

Bashing RS is easy, but RS is the only place I know where I can get the
connectors that I need at 7:00 p.m. on a Saturday night.

John
From: mike@banana.fedex.com (Mike Bearden)
Newsgroups: rec.audio
Subject: FOR SALE: PURIST DIGITAL CABLE
Date: 4 Jan 93 20:31:44 GMT
Distribution: rec
Organization: Federal Express Corp.













      FOR SALE: Purist Audio Design Digital Cable -----    $165

      List price: $350
      1 Meter
      New style with mesh
      price of $165 includes shipping
      RCA/RCA connections

      This is a great bargain on a great digital cable.  Two friends
      of mine and I prefer this digital cable over the XLO and the
      Aural Symphonics Digital Standard.  


      Mike Bearden
      Memphis, TN
      (901)797-6350 work/days
      (901)756-8517 home/nights
From: ch218@cleveland.Freenet.Edu (Erik A. Horn)
Newsgroups: rec.audio
Subject: Re: Sony STR-790 *problems*
Date: 4 Jan 1993 22:42:45 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


I have noticed most of the people who say they love their
STR's have had them a short time.  I had mine about 4 months
when the memory started to malifunction, and two months later
the 'P' light kept coming on. So you may not be out of the 
water yet.  Either that or Sony finally fixed the problem
which would be great.  A lot of 'non-hifi' types trust
the Sony name, and it would be nice if they delivered what
they claimed too.  I have noticed that a fan does help,
so if you notice your reciever does run hot, you may
wish to put a fan on it.. Hope you guys had better
luck then some of us others.
From: lstowell@pyrnova.mis.pyramid.com (Lon Stowell)
Newsgroups: rec.audio
Subject: Re: How can different digital cables sound different?
Date: 8 Jan 93 19:04:58 GMT
Reply-To: lstowell@pyrnova.pyramid.com.pyramid.com (Lon Stowell)
Organization: Pyramid Technology Corporation

In article <79473@hydra.gatech.EDU> gt0869a@prism.gatech.EDU (WATERS,CLYDE GORDON) writes:
>But, you are using a lot more of the bandwidth on a LAN; there is less
>margin for error (longer time delay,higher carrier freq.==worse jitter
>"phase angle" ). In DAC's for audio, you are not even that close to
>the limit! While the cable can cause jitter, the relevant question is
>does the jitter corrupt the digital pulse train timing? If not, it
>should be irrelevent to the output of the DAC. Also, you are not concerned
>with "collisions" in audio; there is nothing to corrupt the signal other
>than outside interference. Therefore, unless the cable is improperly
>terminated (reflections, bad rise time, etc) the DAC should give the
>same output no matter what the cable composition or length, within
>bounds of S/N, as JJ mentioned, with only a microscopic time delay
>as a function of length...
>
   Not to rain on your parade, but "collisions" are a problem only
   on a SINGLE type of LAN technology.  To avoid lan-flame-fests,
   I'll avoid making comments on more modern LAN technologies.

   Their are two relevant questions....

   Does the interface/cable combination cause sufficient
   jitter/distortion such that the receiver either clocks the wrong
   bit value or the right bit value at the wrong time.  I would
   expect the results of this to be truly rude or inaudible
   depending on which bits resulted... 

   Does the clock which feeds the DAC have ANY jitter in it which
   could cause the width of the dac's output to deviate from the
   standard value or from each other.  I'd expect this one to cause
   harmonic distortion which would have little relationship to the
   music.  And although the value might be low, lotsa folks can
   detect this type of distortion.

   If I read you correctly, thats roughly what you said.
From: jeh@cmkrnl.com
Newsgroups: rec.audio
Subject: Re: Those b*s*a*ds in the white van - I hope they got them.
Date: 12 Jan 93 17:39:06 GMT
Organization: Kernel Mode Consulting, San Diego, CA

In article <1it0shINNap6@early-bird.think.com>, philip@think.com (Philip Mucci) writes:
> 	I got taken quite a number a years ago by the very same people.
> They told be at the time that they were BOSE studio speakers being
> delivered to a record co. in the area. I was skeptical at the time - so
> for a test I said ("You realize I am spending my tuition money...if these
> are worthless I can't go to school in the fall.") These SOBs took my money
> anyways and stuck me with garbage. 
          ^^^^^^^^^^^^^^^^^^^^^^^^^

obligatory rec.audio "Bose slam":

You mean they actually sold you some Bose studio speakers?

(sorry, couldn't resist... )

	--- 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: ss@wpi.WPI.EDU (Scott Streeter)
Newsgroups: rec.audio
Subject: CD+G
Date: 7 Jan 1993 22:19:42 GMT
Organization: Worcester Polytechnic Institute
NNTP-Posting-Host: wpi.wpi.edu

Anyone know were I can get a list of CD+G's

-- 
 Scott Streeter                             Visit the Star Wars Archive at
 ss@wpi.wpi.edu                             wpi.wpi.edu       130.215.24.1
Newsgroups: rec.audio