HDTenEightyP/NetNews huggingface dataset:
From: bs753@cleveland.Freenet.Edu (Brett J Grimes)
Newsgroups: rec.audio.car
Subject: all you guys read this the edited version
Date: 28 Sep 1992 00:41:22 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: bs753@cleveland.Freenet.Edu (Brett J Grimes)
NNTP-Posting-Host: hela.ins.cwru.edu


My comments were not pin pointed to everyone who has a system in there
car just the ones who have that rap shit. I myself like to hear the
bass but also like to here mids and highs. i have a eclipse head unit 
with a precision power eq going to a set of rockford fosgate punch 75's
they then go to a pair of mb quart 5 1/4's and 1" inch tweeters and the 
other amp go's to a pair of 12" jl audios in a isobaric box. and the are
all crossed over by a coustic xm3. Im new on this sig and didn't know
it was censored. to all that took my comments in the wrong way, if you 
don't listen to the rap music you shouldn't have replied. it didn't say 
to all of you guys with the radios cranked. it said to all you guys with
the rap. If I pissed anyone of "sorry".

have a nice day
From: laflisc@wkuvx1.bitnet
Newsgroups: rec.audio.car
Subject: Re: 2 ohms vs. 4 ohms
Date: 27 Sep 92 21:03:19 CDT
Organization: Western Kentucky University, Bowling Green, KY

In article <Bv996E.Frw@news.cso.uiuc.edu>, jsc52962@uxa.cso.uiuc.edu (Jeffrey S. Curtis) writes:
> If I can get a two channel amp that's stable at 2 ohms cheaper than a
> four channel amp, and both produce roughly the same net power at each
> speaker, is there any reason not to buy the two channel amp? Does running
> speakers in parallel introduce any problems that would make me not want
> to do this?
> 
> 

Hey guy,
	Yes there are reasons to pick whichever amp.  Running an amp
in a lowered impedence will make the amp produce more current,
thererby making it run ""hotter"" and possibly blowing fuses when you
are listening to your music at a raised level (jamming).  I have a RF
Punch 150 running 2  ohms per chan and 4 ohms brig.   I have blown
internal and external fuses more than once  :(
	Anyway,,, do what you want.  I am just saying that in 2 ohms
the amp life could be shortened.

					HP rules,
					  Scott
					laflisc@wkuvm1
Newsgroups: rec.audio.car
From: sergei@is.morgan.com (Sergei Poliakoff)
Subject: help: how to replace $600 stolen radio ?
Keywords: insurance value $600, suggestions ?
Organization: Morgan Stanley - IS
Date: Thu, 1 Oct 1992 14:00:12 GMT

Some idiot ripped out a factory generic, double-sized unit from 
the console of the Mitsubishi Montero.  
Insurance came up with $600 estimate for the value of the
radio + 1/2 hour of installation work.
This time around we don't want a fixed unit, but rather
have a pullout box. Also , since we don't have a single tape
and used to listen to the portable CD via adapter, we
may as well get a CD player instead of the tape unit.   
The question is :
	
	what pullout AM/FM/CD can be had for about $620, equipment + work,
	considering that the console is really made for double-height unit ? 

  	considering the quality of generic speakers installed in the car,
	the fact that in my opinion the original factory unit was adequate
	as far as sound was concerned, what is the minimum amount of
	money that we have to spend , hardware + installation,
	- to install a reasonable AM/FM/CD 
	- to install a reasonable AM/FM/tape (and continue to use Discman with 
			adapter)

Installing additional amps, EQs, speakers is out of the question :
the steal EVERYTHING, the car is always parked unlocked, sometimes
with windows rolled down, since these folks are too lazy to check
the door first, they go for a window right away.
Factory radio survived in this environment for two years, I guess nobody
wanted that beast, until finally some character in the course of three
nights in a row ( radio was attached really well, he/she failed 
on the first two nights to rip it out , although we could see that some 
progress was being made. On the third night, he succeded. Sounds weird, 
but what can you do ?)


Sergei
From: kmr4@po.CWRU.Edu (Keith M. Ryan)
Newsgroups: rec.audio.car
Subject: Re: 2 subs vs. 4
Date: 3 Oct 1992 03:53:35 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: kmr4@po.CWRU.Edu (Keith M. Ryan)
NNTP-Posting-Host: thor.ins.cwru.edu


In a previous article, robb@engin.umich.edu (Robert Gonyer) says:

>Hi!  After hearing a friends Impackt box (dedicated sub box), I have
>decided to make the switch from my full range Kicker SS-10 box (2 10's
>2 mids and 2 horns), to a dedicated sub box.  I have a Sherwood BP1240Q
>(100x2 into 4 ohms or 200x2 into 2 ohms).  What I want to know is:
>Will I do better with:
>
>1:  4 subs (10") wired in parallel (2 per side) to create a 2 ohm load
>OR
>2:  2 subs (10 or 12") dual voice coil, with the coils wired in parallel
>    also creating a 2 ohm load per side.
>
>I would also like recommendations on drivers.  I like Kickers, but do they
>make dual voice coil drivers?  How bout Cerwin Vega, I know they have the
>12" dual voice coil?  

Okay, I would suggest NOT using dual voice coils if you are going with
multiple speakers.


Here's why. Assuming the speakers are the same in every aspect ( not very
likely, but... ), then the same power into 4 10" and 2 10" DVC's should
result in a similar volume. However, the excursions of the 4 10"'er will
be less. They have twice the radiating surface. So, if you are driving
a moderate to high power ( 200 wattsx2 is sufficient ), the DVC's will
bottom out much quicker ( reach maximum excursion ) While in the upper
bass this may not matter much, in the deep bass region, it'll make a 
dramatic difference. Also, almost every DVC speaker is a design drawback,
the voice coil gap must be wider, they two signals are not always in
full superposition alignment, etc. For similiar speakers, they will have 
more distortion ( of the non-linearity kinds, not good ) I believe they 
are also generally more reactive. [ Sorry, I do not have my reference 
manuals with me, so I can't quote exact equations and numbers.] Also, 
the thermal limits of the voice coils are stressed greater in the DVC's. 

	So, if you can fit 4 10"'ers, I'll go that way. If not, running
2 10", or 2 12" would probably work better than going DVC's.


Now, there are valid uses for DVC speakers. 

1) When you only have room for one subwoofer, and you want to run them
off of a stereo amp which is either non-bridgable, or non-tri-mode ( ie
running a pair of stereo satalittes, with a mono woofer, such as Alpines )
( personally, I'll rather have 2 8"ers than one 10" DVC )

2) Some speaker/amp systems actually use the second VC as a electronic 
feedback for better control! The special amp senses the induced current,
and compensates for any non-linearities. ( such as the Alphasonics,
Yamaha's or Linear Powers ) This is not as effective as the Velodyne
accelerometer approach though, but a whole lot cheaper. ( well, not that
much...)

HTH.

Remember, choose which sounds best to you.
-- 

	" It's time for Congress to tell the president to shove his 
	veto pen up his deficit! "  
					- Rep. Jim Traficant.
Newsgroups: rec.audio.car
From: trw@spl1.spl.loral.com (Tim R Witort)
Subject: Re: speakers and enclosures
Organization: Loral Software Productivity Laboratory
Date: Wed, 30 Sep 1992 16:21:46 GMT

In article <1ab2qmINN360@bigboote.WPI.EDU>, walkerr@yaya.WPI.EDU (Robert A Walker) writes:
|> 
|> I've got two realistic 12 inch subs. [...] Now my 
|> question is I put the statistics for these speaker into the equation
|> Qts^2.87 * 15 * Vad and came up with a volume of 12.414 cubic foot 
|> ported enclosure.  Now is thi{ reasonable or is the equation wrong.
|> Qts = .38
|> Vas = 13.3

   Sounds rather huge to me! The Vas figure looks pretty large.

-- Tim
From: lapete@sage.cc.purdue.edu (Peter Su)
Subject: !! need your opinion on this setup !!
Organization: Purdue University Computing Center
Distribution: usa
Date: Fri, 2 Oct 1992 05:22:52 GMT



I would like your opinion on this plan
that I have in mind about the new   speakers that I am putting in into my truck.

I
am thinking about getting a component speaker system
 I plan to use my current Alpine #3522 30w+30w to run the mid woofers and use the
20w+20w output from my Kenwood head to run the tweeters.  Would this setup provide adequate power for both of the speakers?  What kind
of crossover would I have to use?

  Please forgive the awkward spacing on this posting because I am new w/ VI editor.

Your opinion on this subject would be appreciated.

                                                              Thanks.


Newsgroups: rec.audio.car
From: gianos@leland.Stanford.EDU (Edward Alexander Gianos)
Subject: Q:  Tweeter wiring from CSR..
Organization: DSG, Stanford University, CA 94305, USA
Date: Sat, 3 Oct 92 02:50:05 GMT

In the latest (Nov/Dec) CSR, about one of the installs, page 42, col3, PP2:
 
"  Next, the installer replaced the stock 3.5 inch dash speakers with 
   Infinity's 1-inch Polycell tweeters.  The tweets fire straight up into
   the windshield from a custom 1/4 inch Masonite plate; Barish wired them
   out of phase so the reflected sound is in phase when it reaches Fine's
   ears.  "
 
Whoa, I try to understand what I read in the mags, and follow the install
(often poorly written) articles, but this paragraph threw me.  Why would
someone wire tweeters out of phase?  Isn't the wavelength so small that
you could make no determination?  I can understand time-alignment, but I
do not understand this.
 
Instead of assuming they are wrong and I know everything, can anyone
tell me why this was done/said?   Enquiring minds......
 
Ed 

Newsgroups: rec.audio.car
From: jsmith@ug.cs.dal.ca (Jeff N Smith)
Subject: Wanted-->Help with a folded horn design subwoofer box?
Organization: Math, Stats & CS, Dalhousie University, Halifax, NS, Canada
Date: Fri, 2 Oct 1992 19:09:49 GMT

Help!

I am looking for any information on designing a folded horn subwoofer box.  I would
prefer a computer program but any information would be useful.  I have Perfect
Box 4.56, Rockford Fosgate Installers Guide (this is where I saw the design)
and the Stillwater Designs (Kicker) Speaker builders guide and none of these 
have any information.  

This type of box is odd in size (unusually large) but will play VERY LOW.

Finally I would like to know if there are any other computer programs
available other than PerfectBox, Kicker mention one called LEAP.

Any information on complex enclosure would also be appeciated (isobaric,
band pass, 6'th and higher order, folded horn etc.).

Thanks for any help or suggestions you might have!

Jeff Smith		Dalhousie University
jsmith@ug.cs.dal.ca	Halifax, Nova Scotia

>>>IASCA Finals are only two weeks away<<<<
GOOD LUCK to those who made it there!!
From: max@hal.COM (Harry Max)
Newsgroups: rec.audio.car
Subject: Best Amps
Date: 7 Oct 92 00:35:11 GMT
Organization: HaL Computer Systems, Inc.
NNTP-Posting-Host: itude.hal.com



	There's been an awful lot of Alpine bashing 
	lately.  I've been considering a 45 watt per 
	side Alpine stereo amp for my front speakers,  
	which are Boston Acoustic Pro 6.2s.

	I already have an Alphasonic PMA 20-35 for 
	the rear 6x9s.  Any comments or suggestions?

	max
-- 
Harry Max, Special Staff
HaL Computer Systems, Inc.            Phone:   (408) 379-7000 1155
1315 Dell Ave.                        FAX:          (408) 370-5022
Campbell, CA  95008                   E-mail:          max@hal.com
Newsgroups: rec.audio.car
From: st1q9@elroy.uh.edu (Devine, Della M)
Subject: decreasing enclosure size with multiple drivers?
News-Software: VAX/VMS VNEWS 1.41    
Organization: University of Houston
Date: Mon, 28 Sep 1992 03:51:00 GMT

Hello everybody in Audio land!

     I just got back from two back to back audio competitions this
sunday and had one helluva time!!  I went to a semi local unsanctioned
event and saw some really cool ideas that i think i can implement as the 
money becomes more plentiful and then at the larger, sanctioned event i
saw some really cool stuff that i have seen before and some cool stuff that
i have not.. Anyway, what i wanted to ask was this:
  There was this truck entered in the contest that had 12  Kicker C-12"s.
He was running them off of three Orion 225 HCCA amps. He also had an orion
280 running his 4- 6.5's, 2-5's, 2-4's. and 4-D-20's. All kicker speakers.
Now, he talked with Kicker after a couple of competitions and found out that
they recommend decreasing the volume of the enclosures when running a
multiple amount of drivers..(more than four). This intrigued me and i 
decided to ask the vast net land for an answer. Why is this? I mean, he was
told to drop the volume required of these subs (2.0 ft^3 per driver) down
to 1.4 ft^3 per driver! I mean, i can understand 5%-10% but a whole 30%?
This was straight from Kicker themselves! He said that their justification
for this was that the speakers did not need the ability to reproduce
the ultra low bass that was needed with only two to four subs. Since their
accoustical coupling would take care of that. The kicker is (pun intended)
that once he did this his spl went up from 144.6 to 147.8! I mean, an almost
doubling of theoretical input power into the subs! And according to him and
his father (the guy who paid for it all!) the sound quality went up
immensely! It's tighter and he said it even sounds deeper! 
I was wondering what all of y'all thought about this? Why is this? and
what are the limits to doing this? I've seen many vehicles with 4-8 
subs and they all are in smaller than recommended enclosure volumes.
like a c-15 down from 3.0 ft ^3 to 2.25 ft^3... (kicker C-15 that is).

                                thanx
                                william c devine ii
Newsgroups: rec.audio.car
From: tjd28@cas.org ()
Subject: Amp problem...
Organization: Hapless Hackers Corp.  Columbus, Ohio
Distribution: na
Date: Tue, 6 Oct 1992 12:05:30 GMT

Last night, I was hooking up my amp, when my buddy, who was supposed to be
helping me, hit the amps remote turn on wire against a live power wire and
caused a nice little puff of smoke to come from the amp.  Everything on the
amp still works except for the right speaker ground wire.  Does anyone have
any idea what could have happend?  And, how could I go about fixing it, or,
can I just use the left ground for both speakers?

Also,  before we smoked the amp, the remote turn on from the stereo, would
activate the amp and crossover when the radio is on, but when I put in a cd
the amp turned off and the crossover stayed on.  Also,  the power light on
the crossover dimmed during the use of a cd, but got real bright when playing
the radio.

HELLLLLLLLLP!

In over my head again...

Thanks alot,

Trav
tjd28@cas.org
From: kmr4@po.CWRU.Edu (Keith M. Ryan)
Newsgroups: rec.audio.car
Subject: Re: ALL YOU
Date: 28 Sep 1992 02:08:41 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: kmr4@po.CWRU.Edu (Keith M. Ryan)
NNTP-Posting-Host: thor.ins.cwru.edu


In a previous article, thumper@garfield.catt.ncsu.edu (Chris Mojica) says:

>Why don't you give me your address just so I can go BOOM! BOOM! by your house.
>What a geek, where did he learn such obscene language.  Geeezzzzz.......

	From having to listen to all that offensive rap music?


:-)
-- 

	What God wants Gods gets... God help us all
From: ssave@ole.cdac.com (The Devil Reincarnate)
Newsgroups: rec.audio.car
Subject: Noise canceller
Date: 4 Oct 92 19:10:08 GMT
Organization: CDAC, WA


  A simple question to net.wisdom:

  How do active noise cancelling headphones work?  Anyone?
  I got curious after I read in an Auto magazine that Toyota
  is coming out with active noise cancelling inside the passenger
  compartments in some of its 1994 models.  Must be an extension 
  of existing noise cancelling headphones, n'cest pas?


  -Shailendra
  ssave@ole.cdac.com
From: kmr4@po.CWRU.Edu (Keith M. Ryan)
Newsgroups: rec.audio.car
Subject: Re: Car Insurance Was Re: help: how to replace $600 stolen radio ?
Date: 3 Oct 1992 08:23:39 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: kmr4@po.CWRU.Edu (Keith M. Ryan)
NNTP-Posting-Host: slc12.ins.cwru.edu


In a previous article, al1x+@andrew.cmu.edu (Amit Likhyani) says:

>Excerpts from netnews.rec.audio.car: 2-Oct-92 Car Insurance   Was Re:
>hel.. by T.M.Haddock@usho21.hou28 
>>    But now, if I fail to arm it and stuff happens - low 
>>    to no dough.  Especially, not for any hi-end audio gear.
>
>How the hell are they going to know whether you armed it or not?
>
>
 	That's why passive arming alarms usually get better discounts, yet
they offer less protection.
-- 

	" It's time for Congress to tell the president to shove his 
	veto pen up his deficit! "  
					- Rep. Jim Traficant.
From: dlou@ECE.UCSD.EDU (Dennis Lou)
Newsgroups: rec.audio.car
Subject: Re: Input Jacks
Date: 26 Sep 92 06:40:32 GMT
Organization: University of California, San Diego

In article <38614@sdcc12.ucsd.edu> miliu@sdcc13.ucsd.edu (zaphod beeblebrox) writes:
|>In article <1992Sep25.150334@zapruder.UCSD.Edu> dlou@ece.ucsd.edu writes:
|>>In article <6232@blue.cis.pitt.edu.UUCP>, macman+@pitt.edu (Dennis H Lippert) writes:
|>>My Sony Unilink cassette/radio has a set of RCA inputs destined for
|>>a Unilink CD changer (CDU300/500) as well as RCA outs for front and rear.
|>>Has anyone tried plugging something into these inputs without connecting
|>>the Unilink bus?  Is it necessary to spoof the Unilink bus?  Anyone know
|>>how to spoof the Unilink bus if it is necessary?
|>>I would rather connect a *single* disc player in the front rather than a
|>>changer in the back.  (or I would like to connect my portable CD player
|>>without using those horrid dummy cassettes)
|>
|>I have a Technics head unit with rear "AUX" input.  It is an 8-pin
|>DIN jack.  I want to hook up my portable CD player to it.  I wonder
|>if these DIN connectors are proprietary or, if I were to get a
|>changer/head unit combo, for instance, if I can get two different
|>brands if both use the same connectors.  Someone should market a kit
|>for converting these inputs to standard RCA.

You know, this whole thread reminded me of something I saw the other
day in the latest Crutchfield catalog...

Apparently, there is a product called SmartSwitcher (page 7, if you
have the catalog handy).  Apparently, it is designed to allow you to
add a CD changer to a factory in-dash receiver.  The company is
Peripheral Electronics and the number, as best as I can make out in
the fuzzy picture, is 619-458-1547.

Hey, 619-458-xxxx, that's within 4 miles of here!  Perhaps me and
Zaphod should check it out!

--
Dennis Lou             || "But Yossarian, what if everyone thought that way?"
dlou@ucsd.edu          || "Then I'd be crazy to think any other way!"
[backbone]!ucsd!dlou   |+====================================================
dlou@ucsd.BITNET       |Steve Jobs and Steve Wozniak went to my high school.
From: kmr4@po.CWRU.Edu (Keith M. Ryan)
Newsgroups: rec.audio.car
Subject: Re: THE FINAL WORD ON POW
Date: 29 Sep 1992 23:07:11 GMT
Organization: Case Western Reserve University, Cleveland, OH (USA)
Reply-To: kmr4@po.CWRU.Edu (Keith M. Ryan)
NNTP-Posting-Host: thor.ins.cwru.edu


In a previous article, hhtra@usho21.hou281.chevron.com (T.M.Haddock) says:

>In article <1a9rr1INNc0f@usenet.INS.CWRU.Edu>, kmr4@po.CWRU.Edu (Keith M. Ryan) writes:
>|> 	Now, don't get me wrong. I use good quality cables, not because of
>|> any mysticisms, but because they tend to be more flexible, and better insu-
>|> lated. However, I buy mine at ~$.50/m. This is for 4 ga! And, I buy original
>|> Monster Cable speaker wire 10 ga. for about the same.
>
> Say Keith, ol' buddy, ol' pal.  :)
>
> Don't keep it to yourself, let the rest of us know where we can get it too. 
>
> S'okay?  
>
> If ya do, I promise not to say another word about it!
>
> TRAVIS
>
	

	I bought several huge rolls, wholesale from an electronics store
back in Jax. using their wholesale catalog, about three years ago. I can not 
remember their exact name off hand, but I may be able to get it. The more
you bought, the cheaper it got. I have no idea what the going rate is going
for now. The power cable I believe was "excaliber" brand. ( no relation to
the alarm company. ) Lots of people I know back in Jax. use it for power lines.
The only problem, is it only comes in red! ( to the best of my knowledge, I've
never seen it in anyother color ) And, I found that a local store brand, 
( Ventrex ?) makes goldplated connectors, fuse holders, distribution blocks,
etc which were very similar to Street Wires and the like, yet a fraction of
the cost. ( inspite of what they'll like you to believe, gold plating is not
that expensive to do ) I also like a "store-brand" damping material. Its very
similar to the expensive ones, bonds better ( IMHO ), and a whole lot cheaper.
Can't remember its name though.

	Also, as a hint, it usually is a whole lot cheaper to buy cable ala
"by the foot/meter" and add your own connections, then to buy the similar pre-
cut/pre-connected cables. However, your milage my vary. 

-- 
	Mr. Bush has the dubious distinction of the second largest tax
raise in US history; right behind Mr. Reagan. They're the real slickersters,
with their theivery fingers in our wallets, with a grin and a gleem in their 
eyes.   What a "no new taxes" bastard.
Xref: sparky rec.audio.car:3913 ba.market.misc:7435 ba.market.vehicles:3489
From: blake@wk60.nas.nasa.gov (Matthew W. Blake)
Newsgroups: rec.audio.car,ba.market.misc,ba.market.vehicles
Subject: FOR SALE: Soundstream Car Stereo
Date: 29 Sep 92 15:59:54 GMT
Distribution: usa
Organization: NAS, NASA Ames Research Center, Moffett Field, CA



      *********  For Sale:  Soundstream Car Stereo   ***********

              *********     Price:  $175    **********


I have a Soundstream TCA-40 AM/FM/Cassette car stereo for sale.  This is
a fairly simple unit with a very clean look.  It has very high quality 
radio and cassette capabilities and the power amp is extremely clean, the 
4 watts sound like 25 watts from a Sony.  Features:

- AM and FM have 5 presets each, scan for stations
- Cassette has Dolby B, music search, metal tape, tape release at power down  
- Includes separate bass & treble, balance, front/rear fader
- pre-amp outs
- 4 watt/channel (4 channel) or 8 watts/channel (2 channel) speaker output 
- separate cable with aux input for portable CD
- My cost 2 years ago was $350 plus tax, licence, dealer prep, etc.


= = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = =
If interested in this item, either email me or phone in the evenings 
between 6pm and 9pm.

Matt Blake
blake@nas.nasa.gov
(415) 965-7439 from 6pm - 9pm