HDTenEightyP/NetNews huggingface dataset:
From: "herb chong" <herb.chong@channel1.com>
Newsgroups: rec.audio
Subject: noise reduction
Date: 18 Dec 92 04:59:55 EST
Reply-To: "herb chong" <herb.chong@channel1.com>
Distribution: rec
Organization: Channel 1 Communications

WI=>What are the differences (qualitatively) between Dolby C noise
  =>reduction and dbx noise reduction?  I have them both on my home tape
  =>deck.  I'm considering buying a new car stereo, and I want to get one
  =>with the best noise reduction (out of the ones that my home deck
  =>supports.)

i don't think you will find a car stereo with dbx has ever been made.
also, Dolby C car decks are few and far between. make tapes for the car
with Dolby B unless you have an extremely quiet car.

i'm surprised you don't hear a significant difference in the amount of
noise reduction with dbx vs Dolby C. dbx is a much more capable NR
system when used with a good deck. i'll leave the details of the
difference between the two NR systems to others.

Herb...
---
  OLX 2.2  And God said: E = mv - Ze/r, and there was light!
--
Channel 1 (R)   Cambridge, MA

Newsgroups: rec.audio
From: law40001@nusunix1.nus.sg (CHENG KWONG WING)
Subject: Magneplanar Question
Organization: National University of Singapore
X-Newsreader: TIN [version 1.1 PL6]
Date: Thu, 17 Dec 1992 01:20:29 GMT


Hi folks,

I was just given a pair of MG IIa, problem is one said gives out bass
and the other only the highs.

Any recommendations before I start dismantling the system and making a
mess out of it???

Thanks.

PS. I have opened up the speaker connection panel on one side and took
the fuse, shorting the two wire ends together; now no sound comes out at
all on that side!!!

--
--
____________________   .    .   __         . 
\______NCC_1701_____|) .____.--"--"---._____ 
             ||      /-----._________.----/  
     /=======||====/___/       "--"          
   . \==\____________|(-                .   
Newsgroups: rec.audio
From: jim@stargate.helios.nd.edu (Jim McCusker)
Subject: Re: DAC to ADC components? Snake Oil??
Organization: OUC, University of Notre Dame
Distribution: rec.audio, sci.electronics
Date: Wed, 16 Dec 1992 04:15:28 GMT

Grant,
 My statement was not ment to suggest that the Levison #30 was some
sort of snake oil.  But more to clarify whether it is worth it to
purchase one of these DtoA converters or to stick with the DtoA in
my Nakamichi CD Player 2.  My system consists of a Carver CT-6 pre-amp
tuner, Carver TFM-25 amp, KEF 104.2 speakers.  I am an EE by training
and do understand the technical aspects of these designs, but I can't 
help being scheptical about the added benifit of such devices, since
it appears that the audio world is approaching the limits of our 
perceptability.  
 From what you stated, do you mean that the DtoA in an off the shelf
CD player doesn't produce as pure an analog signog signal as the #30
does?  And if so, how much of a difference is there (numbers I mean), and
are these differences perceptable.  I basically mean that we have the 
ability to measure the heck out of audio equipment and we should be able
to draw a line between what improvements are perceptable and what aren't.
An audiophile must be able to say when they can't hear a difference.  If
they don't then I believe they are just fooling themselves.  
 Do you think I'd be able to hear the difference between my CD player directly
into my system and between the #30 inline with the system??
 
        -- Jim
From: co940@cleveland.Freenet.Edu (Nicholas E. Damato)
Newsgroups: rec.audio
Subject: Re: EPI speakers?
Date: 18 Dec 1992 18:42:23 GMT
Organization: Case Western Reserve University, Cleveland, Ohio (USA)
NNTP-Posting-Host: hela.ins.cwru.edu


i take it those are the crutchfield speakers?
they may list for $400 but i've seen them around for
$200-$240 mostly. In fact I bought a pair for my dad.
my opinion of the EPI speakers:
 
Cabinet: Plastic, sounds a little boomy
Tweeter: polyprop cone, sounds nice.
midrange: weekest driver in the system, fortunately most
          people have too much midrange anyways. it was o.k.
woofer: smallish paper cone, very clean/tight for the price.
 
for $150 they are a steal. if that's all you can afford, grab'em
otherwise if you can spend a little more look at a pair of paradigm
5 Se II's (around $350 in my area) or titans (if you will settle
for a bookshelf size, they are $200)
i've seen then for $150 as well and they sound nice too.
 
ned.
From: rmf@bpdsun1.uucp (Rob Finley)
Newsgroups: rec.audio
Subject: Phone Parts/Service:  Denon, Sony, Carver, NAD, Crown, Yamaha, Luxman
Date: 20 Dec 92 04:47:56 GMT
Organization: Harris Allied Broadcast Div., Quincy, IL


Here is my collection of US phone numbers.  Some are from posts here,
others are from digging...

Denon:  201-575-7810/parts
Crown:  219-294-8000/parts
Carver: 206-775-1202/parts
NAD:    800-263-4641/parts
Luxman: 213-326-8000/parts  800-421-5080/everything else
Sony:   816-891-7550/parts  800-551-7669/everything else
Yamaha: 714-994-3312/parts  714-522-9105/everything else


-----
"We know what the reponse of the American people will be, and it's not
attractive.  They really do believe the Bill of Rights gave them unleaded
regular for $1.06 a gallon, and they better get it or, by God, they'll get
the bums out of Office."  -- Energy Secretary James Watkins on taxing energy.

quintro!bpdsun1!rmf@lll-winken.llnl.gov or uunet!tiamat!quintro!bpdsun1!rmf
From: mtrostle@sdcc13.ucsd.edu (Mark Trostler)
Newsgroups: rec.audio
Subject: Subwoofer amplification
Date: 19 Dec 92 20:44:10 GMT
Organization: University of California, San Diego

I have a 12V/2.5amp power supply that I'm going to use to run a 140
watt amp (running in mono mode).  I want said amp to power a 12"
subwoofer, but I have to choose either 'left' or 'right' in mono
mode to send to the subwoofer - does the subwoofer get only one
channel?  Also, since the amp is only powering the subwoofer, do I
need any sort of crossover?  If so, does it go before or after the
amp?  Finally, what should the volume/dimensions of the subwoofer
enclosure be?  I know there's a volume equation somewhere, but have
no idea what it is...
					Thanx a zillion...
						Mark
Newsgroups: rec.audio
From: thumper@mentor.cc.purdue.edu (Not me)
Subject: Re: CD Changers
Keywords: CD Changers
Organization: Purdue University
Date: Fri, 18 Dec 1992 07:12:11 GMT

	I've got a Sony CDC C77ES ($500), and I really like it, but I wish
I had waited for the new Onkyo 6-disc changers.  Very sweet.
	Go for a carousel:  magazines may be more convenient, but they make
A LOT of noise when switching discs, and all that open space inside the 
player just makes me nervous.  If that doesn't bother you, the its a toss-up.
Both types sound as good as any mass-market single player, I just feel that
the carousel is more user-friendly.
	Stay away from Denons!  They are built like your average Yugo, with 
about as much attention to fine engineering.  Yamahas are said to be good, as
are Nakamichis, which you may have trouble finding now, as a new line has
just been introduced.  The CD 3 and CD 2 are changers that hold 6 discs inside
the player in a little stack that moves up and down to feed the single tray.		
You might be able to get one at closeout prices if you hurry.
	Hope I have been helpful.

			Jeff Swarm.
Newsgroups: rec.audio
From: scarlett@esrican.uucp (Brian Scarlett)
Subject: Superphon/Meitner/Dolan
Reply-To: bscarlett@esri.com
Organization: ESRI Canada
Distribution: na
Date: Tue, 15 Dec 1992 15:01:23 GMT


Do the following audio companies still exist?


  Meitner (based in Montreal, produced the Pa6i preamp)

  Dolan   (based in Ottawa) 

  Superphon (Stan Warren's company, produced the Revelation preamps)


-- 
_|_| Environmental Systems Research Institute, CANADA     bscarlett@esri.com
_|_|    Top 10 Enjoyable Things about ESPN's Formula 1 Coverage:              
           4. Never know when outbreak of Legionnaire's disease may enable
              Andrea De Cesaris to finish in the points.    D.Letterman
From: lancer@wpi.WPI.EDU (Stephe Lewis Foskett)
Newsgroups: rec.audio
Subject: Re: Digital Music Cartridges?
Date: 19 Dec 92 00:44:52
Organization: ZikZak Corporation
NNTP-Posting-Host: wpi.wpi.edu
In-reply-to: co940@cleveland.Freenet.Edu's message of 18 Dec 1992 18:01:06 GMT

>>>>> "co940" == Nicholas E. Damato <co940@cleveland.Freenet.Edu> writes:
co940> Didn't sony or somebody have a personal digital cartridge
co940> system out a few years back?  I seem remember these things
co940> lying around at K-marts, the cartridges each held one song
co940> (usually a teeny- bopper mega-single) and cost about $3. They
co940> probably used data compression algorithms ned.

I think you may be mistaken.  If these DID exist, they'd have been as
cool as the Fisher Price Camcorder, but I don't remember them...

I DO remember a thing that used a little cartridge-like thing that was
actually a single-reel tape (like a tiny 8 track) that held one song.
These plugged into a little player and came in bright colors wit hpop
music on them.  Pretty cool really, IMHO, but not digital music
carts...

.s.
--
- so spake lancer@wpi.wpi.edu -   - so says the Beautiful South: -
-       With a choice between lonliness and lovesick QE2s        -
-               Well, tonight I choose self abuse                -
From: kchen@Apple.COM (Kok Chen)
Newsgroups: rec.audio
Subject: Re: Magneplanars again...
Date: 12 Dec 92 03:33:17 GMT
Organization: Apple Computer Inc., Cupertino, CA

sikorsky@ee.ualberta.ca (Mike Sikorsky) writes:

>Would Maggie
>owners ever consider going back to box/cone designs?


Surely you are kidding.

I have had my SMGa for something like 8 years now.  I have driven it 
with anything from a Hafler, the British Fidelity A1, a home-brew tube 
amp (pentodes with FET-regulated screen grids), and, currently the 
100W Counterpoint.  

Kok Chen, AA6TY				kchen@apple.com
Apple Computer, Inc.


Newsgroups: rec.audio
From: slr3e@Virginia.EDU ("Stacy Lee Roach")
Subject: Kenwood A/V receivers
Organization: University of Virginia
Date: Thu, 17 Dec 1992 17:22:55 GMT

I have the opportunity to buy a new Kenwood-8030 A/V Receiver
( last years model ) for $300.  It has 120 watts x 2, Dolby
Pro-Logic, and .06 THD to list a few features.  I was more 
interested in getting a higher end integrated amp or separates 
a little later, however this seems like a pretty good deal.  
I would appreciate a response from anyone who owns a Kenwood 
receiver or knows much about them as soon as you can.  I'd 
mainly like to know how Kenwood compares with some of the higher 
end receivers on the market.
					slr3e.Virginia.edu
Newsgroups: rec.audio.car
From: yystg@lims02.lerc.nasa.gov (STEVE GRAHAM)
Subject: Re: are alternators too weak for amps?
News-Software: VAX/VMS VNEWS 1.41    
Organization: NASA Lewis Research Center
Date: 14 Dec 1992 10:40 EST  

In article <Bz4wv3.IKp@acsu.buffalo.edu>, v125p7ae@ubvmsb.cc.buffalo.edu (JEFF) writes...
>I have a 1987 Acura Integra.  Recently, I installed a
>Bazooka 6 1/2" with built in 40 watt amp (about 3
>weeks ago).  Just today, 12/11, my car lights go dim
>when the engine was off and needed a jump to get it
>started again.  Since, then i noticed that my dash
>lights go very dim when at a red light (idling).
>When I accelerate again, the lights return to their 
>normal brightness.  Is it possible the alternator
>isn't strong enough to power the built in amp?
>thanx in advance

Your battery may be bad.  Given that your car is an 87, this may be the 
case.

In any case, a 40 watt amp should be no problem for most cars, especially 
if you have air conditioning (stronger alternator).


S. Graham
Newsgroups: rec.audio.car
From: ross@tarski.tmc.edu (David Ross)
Subject: connecting high power headunit to amp
Organization: University of Hawaii Mathematics Department
Distribution: usa
Date: Sat, 12 Dec 1992 00:15:19 GMT


I have a moderate-power receiver (10 w/ch in 2 ch mode), and I want to
connect an old Alpine amp I have to the rear channel.  The receiver has
no preamp outputs, and in any event the Alpine preamp input uses the
old 5-pin Alpine DIN which is incompatible with everything and for
which no adapters seem to exist.  Thus, I want to patch the receiver
speaker output to the speaker-level amp inputs.  Can I do this by cutting
the power somehow, say with resistors in series?

Thanks,
David


--
David Ross, Dept. of Math., Univ. of Hawaii at Manoa, Honolulu HI  96822
Internet: ross@math.hawaii.edu  -or- ross@tarski.math.hawaii.edu
Phone: 808-956-9949
Newsgroups: rec.audio.car
From: eddys@citrus.SAC.CA.US ( Steve Eddy )
Subject: Re: Class A MOSFET Power Amp for sale...
Organization: Citrus Grove Public Access ( 916 ) 381-5822    Sacramento CA.  USA
Date: Fri, 18 Dec 1992 12:27:32 GMT
X-Newsreader: Tin 1.1 PL4

kirk@hpcc01.corp.hp.com (Kirk Lindstrom) writes:
: Bolt is in fact a "Class A" amplifier, but my guess is it is a reference
: to their input stage in the hopes of fooling people.  A true class-A
: output amp for car audio is ludicrous.  Next we'll get tubes!  I
: considered BOLT when I first got the idea to put some good sound in my
: van.  They are known to put out alot of power, but I don't think they
: are "high-end".  I've seen them in flea-markets and corner discount
: stores for $160 new.
: 
: Kirk out

   Actually, there already is a vacuum tube-based car amplifier. The Milbert
BaM-230. But despite that, what's so ludicrous about a class-A car
amplifier?

se

-- 

# Where no man has gone before.                   eddys@citrus.SAC.CA.US
#   *default* .sig file                      csusac.ecs.csus.edu!citrus!eddys
# The undiscovered land.                                   /\../\
From: Berger@cup.portal.com (Mark - Berger)
Newsgroups: rec.audio.car
Subject: Re: Wanted: Cd Player Maxima
Date: Tue, 15 Dec 92 20:29:07 PST
Organization: The Portal System (TM)
Distribution: usa

Regarding the request for help about adding CD to a Nissan factory system, I
presume that you could add a CD changer such as the Sony unit which is 
equipped with a wired remote control for CD functions.  You would then have
a small remote unit, which you could keep to the right of the driver's seat, 
and have a 10 disc player which would have the added advantage of being
"invisible" to thieves.
From: cse0075@uoft02.utoledo.edu
Newsgroups: rec.audio.car
Subject: Recommendations for low-end cass. rcvr & spkrs
Date: 14 Dec 92 17:47:11 EST
Organization: University of Toledo, Computer Services


Hi!  I just got an '81 VW Rabbit Diesel and I'd like to put an inexpensive
cassette receiver and speakers in it.

I'd like some recommendations given the following desired features:

Digital Tuning with at least 4 FM presets
Auto-reverse
Pull-out (preferred because the dash is broken, making it all that much
          easier to steal the unit).
Separate bass/treble
Fader

Also, maybe a built in equalizer, and an input for a portable DiscMan.

Being an old diesel, the car is somewhat loud, so I am not real concerned
with sound quality.  I'd just like to be able to listen to my favorite FM
stations (4 or 5 programmed in memory) and any tapes I might make from
CDs at home.  (Does the vibration of the diesel eliminate CD use in the car?)

The speakers that are installed now are no good, so I will replace those too.
At least two in the back, but maybe I'd try and replace the speakers in the
dash.

I have no more than $250 to spend.

Thanks for your help,

Mark LaPlante
From: cmermag@eng.umd.edu (Christopher Mermagen)
Newsgroups: rec.audio.car
Subject: NEED INFO ON CASSETTE HEAD UNIT AND 6 DISC CHANGER
Date: 16 Dec 92 14:11:28 GMT
Organization: Project GLUE, University of Maryland, College Park

Well, my Supra bit it in a car accident, so I have decided for my
next car (a 90 Grand Am SE), that I will change from the CD headunit
to a CD changer and a tape headunit. I have the amps, speakers, and
EQ necessary, I just need a recommendation on a good cassette head
unit that has cd changer controls and a complimentary 6 disc changer
that works with the unit..

Thanks for the replies, email if possible :)

Chris

BTW, Class A amps use the full cycle of voltage, and draw alot
of current (it has a low output impedence), but has crossover 
distortion problem which is solved by AB, I believe (AB amps
are indiginous to most of our cars!)
From: jzerden@pro-cynosure.cts.com (Jon Zerden)
Newsgroups: rec.audio.car
Subject: Also
Date: 21 Dec 1992 00:29:09 -0600
Organization: ProLine [pro-cynosure]
NNTP-Posting-Host: cs.utexas.edu

Also if anyone is looking for Excalibur alarms.. My company is an
authorized Excalibur dealer.. if your interested on want to know more info
let me know.. If you want a price list and brochure, send me mail

.,s
Jon Zerden                         Sysop Of Triumvirate BBS
InterNet: JZerden@pro-cynosure.cts.com          410-486-9812
CI$ 73520,167                      Genie: J.Zerden
                FutureNet #1@#11
Newsgroups: rec.audio.car
From: SCHEER@BEATE.RZ.FH-ULM.DE ((T. M.))
Subject: ALPINE CD
Organization: Germany sucks
Date: Tue, 15 Dec 1992 07:41:29 GMT
X-News-Reader: VMS NEWS 1.22



Has anybody got any experience with one of the 
ALPINE CD-Changer  ??
Or should I buy a SONY instead ?

Suggestions PLEASE !
Newsgroups: rec.audio.car
From: demaine@ee.ualberta.ca (Cal Demaine)
Subject: Re: Books, FAQ's etc
Organization: University Of Alberta, Edmonton Canada
Date: Mon, 14 Dec 1992 18:04:35 GMT

brian@hopi.eel.ufl.edu (Brian Gentry) writes:

>This figure is subject to how the manufacturer measured it, but here's what
>it's supposed to be:  If you put 1 watt of pink noise (equal energy per 
>octave) into this speaker and place an SPL measurement device 1 meter
>away from the face of the driver, the device should give you this rating.
>So, for a 91 dB @ 1 watt and 1 meter driver, you should measure 91 dB of
>sound pressure when standing 1 meter from the face of the driver and giving
>the speaker 1 watt of pink noise input.  This figure is usefull in determining
>the output of the driver at any power level.  Every time you double the 
>amount of power in, you should get 3 dB more out of the driver.  So with this
>91 dB @ 1 watt and 1 meter driver, if you put in 2 watts you should get 94 dB,
>4 watts => 97 dB, 8 watts => 100 dB, etc.  Every time you give a driver 10
>times the power, you get 10 more dB out.  With the same driver:  1 watt => 91 dB
>10 watts => 101 dB, 100 watts => 111 dB, 1000 watts => (probably destroys
>the driver but maybe gives you 121 dB).

>As long as I'm covering this, I should mention that every time you double
>your distance from the driver you LOSE 6 dB.  Conversely, if you halve your
>distance from the driver you should gain 6 dB.  Example:  with the same driver
>as above with 1 watt input:  1 meter => 91 dB, 1/2 meter => 97 dB, 
>2 meters => 85 dB, 4 meters => 79 dB, etc.

Well posted, Brian.  As well, faithful listeners should note that these
measurements are not (should not) be done in a car, but a free-field
environment.  What that means is that your experienced efficiency is likely
to be higher.  Thankfully, I might add, or cars that can hit 140dB SPL would
be even more terrifying than they are now.

-- 
--------------------------------------------------------------------------------
  - Cal Demaine                   | "You shot him in the back!"                 
    (demaine@bode.ee.ualberta.ca) |    "His back was to me!"  - El Diablo    
--------------------------------------------------------------------------------
From: cjm9321@hertz.njit.edu (The InfoMan)
Newsgroups: rec.audio.car
Subject: Re: question on Power Consumption
Date: 19 Dec 92 07:43:30 GMT
Organization: New Jersey Institute of Technology, Newark, N.J.

In article <1gtacqINNjfk@usenet.INS.CWRU.Edu> ae454@cleveland.Freenet.Edu (Paul Simundza) writes:
>
>
> I have a Hi-Power pullout, Jensen, that has 60 watts built in, but
>I am not using the power built in, I am running all my sound with
>RCA jacks to 2 AMPS one for subs, and the other for the rest, mids/highs.
>Is it safe to say that if there are no speakers hooked up to the 
>Jensens speaker output that no power is being used? and is it safe to
>have no load on the jensens speaker outputs? Is this a stupid question?
>
>-- 
>Paul Simundza                  | Cleve.Freenet: ae454@cwru.edu
>                               | Compuserve: 71441.217@compuserve.com
>                               | CSU(Internet): pauls@madnick.cba.csuohio.edu


	No question is a stupid question.


	As long as the wires are not connected to anything and are
safely protected, then there is no load on the internal amp. I'm pretty
sure that the amp isn't using any power when not connected but I think
it might be drawing a litte (very small).

-- 
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 \    ================
From: kirk@hpcc01.corp.hp.com (Kirk Lindstrom)
Newsgroups: rec.audio.car
Subject: Re: Fix scratch in CD?
Date: 17 Dec 92 17:07:45 GMT
Article-I.D.: hpcc01.26130128
Organization: Shredding the water of SF Bay, HP-OCD

>> like 20 more to get past the scratch unless I cue it ahead.  The nick is real
>> small, like the size of a fingernail clipping.  Is there something I can use 
>> fill it slightly?
>
>DiscWasher sell just such a kit now, we have it at the store.

You forgot to mention that this does just what Turtle Wax does, but you
get to pay 4x more!

Kirk out
Newsgroups: rec.audio.car
From: jreiser@scott.skidmore.edu (Jason Reiser... Asleep)
Subject: Re: How many remote leads?
Organization: Skidmore College, Saratoga Springs NY
Distribution: na
Date: Fri, 18 Dec 1992 23:38:30 GMT

Relaying the power for remote leads is also a good idea if you are
having problems with components staying on when they should be off.
Certain audio components may "leak" small levels of 12 volts out of
their remote turn on leads and keep other units on.  For example, I
find that HiFonics amps do this at small levels (about .75 volts) and
that was enough to keep my PPI PAR-225 EQ preamp stay on at all times
that the ignition was on.  A relay solved the problem.  

				- Jason
-- 
---------------------------------------------------------------
\ Jason A. Reiser  \ Send E-Mail to jreiser@scott.skidmore.edu \
 \ Skidmore College \ Saratoga Springs, NY 12866 \ 518-581-6580 \  
  \ It's a new Ice Age!  Hooray!!  Sled City!  - Calvin & Hobbes \
Organization: Senior, Electrical and Computer Engineering, Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.audio.car
Date: Fri, 11 Dec 1992 17:27:37 -0500 
From: Amit Likhyani <al1x+@andrew.cmu.edu>
Subject: Re: Pioneer in-dash CD in Jeep Wrangler

Excerpts from netnews.rec.audio.car: 10-Dec-92 Pioneer in-dash CD in
Jeep .. by DENNIS B. PRICE@ns1.cc.l 
>  Are new CD players like this Pioneer in-dash better equipped to handle
>  vibration?  I assume so, but does anyone else have experience with putting
>  one in a Jeep or similarly stiff-suspensioned vehicle?

I have the much maigned Sony U8000.  Most sales people you talk to claim
that it will skip, and one guy tried to steer me towards a Clarion.  The
markup on the CDX-U8000 must be minimal. 

I have had the thing since October 11 and it has not skipped yet.  Today
I drove in a blizzard here in Pittsburgh and was amazed that I did not
get the inaugural skip.  Some of the potholes and non road surfaces I
hit would cause a CD changer to skip.

My point is that the new CD tuners do not skip, so I would not worry
about it.  My car is a Mitsubishi Mirage and the suspension is pretty
rough.
Newsgroups: rec.audio.car