HDTenEightyP/NetNews huggingface dataset:
From: LEON@biosci.arizona.edu
Newsgroups: rec.audio.high-end
Subject: What about Amplifiers?
Date: Thu, 21 Jan 1993 9:26:22 -0700 (MST)
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


I currently have a receiver with line-level outputs for a center speaker.
The main speakers on the receiver are at a houndred (100) watts each and
I would like to obtain an amplifier with about the same amount of power
for a center speaker.  What should I consider when looking at amplifiers,
I once heard that overall they are basicly the same. Can someone out
there please comment on this and recommend some amplifiers.


       - Vince -
From: petrik@ulysses.att.com
Newsgroups: rec.audio.high-end
Subject: Repairing the AR ES1 turntable
Date: Thu, 21 Jan 93 17:15:53 EST
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Newsgroup: rec.audio.high-end
Originator: tjk@csd4.csd.uwm.edu

This is the first time I am posting on Usenet, I hope I am doing 
this correctly. Anyway, I need some help. Last week I moved my 
system from one room to another and I, unfortunately, dropped my 
Acoustic Research ES1 turntable down a flight of stairs. Needless 
to say, there was extensive damage: 
(1) the motor does not operate properly (the motor pulley doesn't 
    turn smoothly)
(2) the inner platter is cracked
(3) the tonearm (AR) is inoperable (one of the connecting wires to 
    the cartridge is torn and the entire arm is very "loose")
(4) one of the dust cover hinges broke
(5) the plastic cover cracked
(6) there are numerous scratches on the cherry-wood surfaces and 
    some edges are chipped.
(7) I don't really know how the suspension system was affected.

I called several local dealers and none of them fix AR turntables. I
even called AR in Canton, MA; they told me that they have been out of
the turntable business for 2 years (getting killed by CDs). They have
some parts (like the motor ($60) and inner platter ($83)) but not others
(like the tonearm, cover ...). They can fix the suspension T-bar for $70.
It looks like I'll have to fix it myself, but I wonder if I need 
special tools, or skills to do it. Is the damage too severe to ever 
obtain the quality of sound reproduction it originally had, and thus 
not worth the time and money? 
I'd appreciate any info on where to get parts and any schematics 
(prices if possible). 
Any other advice would be greatly appreciated (email or 908 582-5618).
Thanks in advance,

Petrik
From: "andriccs@duvm.ocs.drexel.edu" <ANDRICCS@DUVM.OCS.DREXEL.EDU>
Newsgroups: rec.audio.high-end
Subject: re: re: digital amps, possible???
Date: Wed, 20 Jan 93 15:37:31 EST
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

    Andrew M Randle (ulamr@ohm.york.ac.uk) writes:

:  Well such amps have been designed. They are called Class D.

As far as I remember, Soundcraftsmen made some Class D, amplifiers.
Maybe you (or Michael Carr) could get some info from them.
Sorry, no phone number.

Chris Andrichak
andriccs@duvm.edu
From: mcvey@mprgate.mpr.ca (Iain McVey)
Newsgroups: rec.audio.high-end
Subject: Re: Two great mysteries of audio
Date: Tue, 26 Jan 93 22:16:56 GMT
Organization: MPR Teltech Ltd., Burnaby, B.C., Canada
  (5.65c/IDA-1.3.5 for uunet!rec-audio-high-end); Tue, 26 Jan 1993 14:17:04 -0800
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

In article <1jusfpINNl6p@uwm.edu> caudle@owlnet.rice.edu (Chris Aaron Caudle) writes:
>In article <1jov32INN53@uwm.edu>, ken@isgtec.com (Ken Newman) writes:
>|> Two things I've been wondering about or been annoyed by:
>|> 
>|> 1) Why are there no pre-recorded metal cassettes, or no pre-recorded
>|>    Dolby C cassettes?

I would assume it is:
1) Standard money-grubbing; no one has asked for it.
2) We are talking high speed dubbing and mass production.  Is metal
   going to make a difference?

I don't buy prerecorded tapes if I can help it, but do receive them as
gifts every so often.  I usually listen to them in the car until they
get intollerable (sometimes this does not take much) then borrow, rent,
purchase the CD and tape over the original tape.  It sounds much better.

Therefore I would assume that the problem is with the process not the
materials...

>Mainly because not EVERYONE has a Dolby C deck, and commercially available
>material needs to be downwardly compatible.  As for metal, I don't know.  
>Most new cassettes are recorded on chrome; maybe the record distributors
>have decided that the quality of the media doesn't justify more expensive
>tape than that, or, more likely, that most people just don't care, so why
>bother?  They are in this to make a profit, for the most part, and not 
>because they are idealistic about preserving art for future generations.

I would agree here.

>|> 2) Why do they not "record" or "press" or "download" :) or whatever
>|>    the appropriate term is, on both sides of a CD?

>Because there would be no place for a label.

Do we need labels?  I for one _love_ to pay an extra $.25 or whatever
for the silk screening.  Put the extra art / info into liner notes, I
say.

- Iain -
-- 
Iain McVey (mcvey@mpr.ca)      | "It's all smoke and mirrors until someone
Software Designer              |  loses an eye - then its special effects"
MPR Teltech Ltd.               | "This bottle of whisky is awful.  I'll be
8999 Nelson Way, Burnaby, BC   |  glad when it's done" - One Scot to another
From: "Raymond P. Pichulo" <PICHULOR@v9.hanscom.af.mil>
Newsgroups: rec.audio.high-end
Subject: RE: Mail Order
Date: 21 Jan 93 09:35:00 EST
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

>I agree 100%!  Besides what could be more unethical than retail
>capitalism in the first place!!  Anyway, I think it is very important to
>give your local dealer a chance to match prices with mailorder.  As Gary
>points out, mail order dealers are still making a profit and many times
>your local dealer will come close (or even beat) the mail order price --
>especially when you consider how much you will spend on shipping..

Don't compare apples and oranges.  The mail order dealer doesn't have the
overhead of maintaining demos, loaners, a showroom, etc. that your retail
dealer has, so you can't honestly expect him to match the mail order price.
You've got to give the retail dealer some allowance for this.
From: thrax@iastate.edu ()
Newsgroups: rec.audio.high-end
Subject: Where to buy speaker drivers
Date: Sun, 24 Jan 1993 20:36:52 GMT
Organization: Iowa State University, Ames, IA
NNTP-Posting-Host: 129.89.7.4
Return-Path: <news@news.iastate.edu>
Originator: tjk@csd4.csd.uwm.edu


I am wondering where to get drivers for my speaker projects.  I have catalogs
for places like MCM and Parts Express, but I am curious about other places to
get raw drivers.  I enjoy building my own speakers, and need new sources. 
Of special interest right now is somewhere to get compression drivers for
horns.  

Any information would be much appreciated.

Thanks...

thrax@iastate.edu
From: cal@gsbux1.uchicago.edu (Cal Lott)
Newsgroups: rec.audio.high-end
Subject: Re: Two great mysteries of audio
Date: Sat, 23 Jan 1993 01:01:11 GMT
Organization: University of Chicago Computing Organizations
NNTP-Posting-Host: 129.89.7.4
Return-Path: <news@wakinyan.uchicago.edu>
Originator: tjk@csd4.csd.uwm.edu

ken@isgtec.com (Ken Newman) writes:



>Two things I've been wondering about or been annoyed by:

>1) Why are there no pre-recorded metal cassettes, or no pre-recorded
>   Dolby C cassettes? Every decent cassette deck for many years
>   (even car decks, for crying out loud) has had metal and Dolby C
>   capability. There must be some demand? Sure metal tape is expensive
>   but so are CD's.

	A&M does (or used to, at least) pre-record on chrome cassettes.
I know of no company that uses Dolby C.

	One reason why companies are largely unconcerned with analog
cassette quality is because the principal consumers of that format are
largely unconcerned with quality. The companies will continue to sell
them as long as it is profitable.

>2) Why do they not "record" or "press" or "download" :) or whatever
>   the appropriate term is, on both sides of a CD? Again, this would
>   be more expensive, sure, but probably much less than two CD's?
>   I certainly wouldn't mind flipping a CD over if I could save 
>   several bucks and obtain the several other obvious advantages
>   of this.

	I don't have a lot of ideas on this one. It may be due to
quality control reasons. (At least, that could have been an issue in
the early days of the medium that has been held over for historical
reasons.) I doubt any pressing plants are set up to manufacture two-
sided CD's, so why bother to develop the technology when there is no
pressing (no pun intended) need for it?

							-Cal
--
----------------------------------------------------------------------
Cal Lott          "Oh, I see-- I thought 'no' meant 'spoon'!" --Dan
Email me, baby!   cal@gsbux1.uchicago.edu   cjl1@midway.uchicago.edu
----------------------------------------------------------------------
From: gfl@herahera.cc.bellcore.com (lenahan,grant f)
Newsgroups: rec.audio.high-end
Subject: Re: Bridged Amps and Hafler DH120 Mods
Date: Tue, 26 Jan 93 14:19:00 GMT
Organization: Bellcore, Livingston, NJ
  (5.65c/IDA-1.4.4 for rec-audio-high-end@uunet.uu.net); Tue, 26 Jan 1993 09:19:04 -0500
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

(Chris Mouzouris) writes:
> Hi,
> I have a pair of Hafler DH120's power amps which I run in bridged mode.
> I have read that bridged amplifiers can suffer from 'load sensitivity'
> and am wondering - 
> 
> 1) If this is true?

It can be.

> 2) If so, why?

Because bridged amps run their outputs in serial, thus
the output impedance is 2X unbridged.
The Hafler has sufficiently low output Z to be OK bridged,
but its power supply will current limit sooner than
really big amps.

> 3) Can this be corrected?

Not practically.
Keep in mind that alll Krell MDA-series amps run this way,
so its not really a problem.
> 
> I am also after any recommendations/information regarding relatively simple
> upgrades that can be made to these amplifiers. I have already made the 
> following modifications -
> 
> 1) Replaced the input RCA's (the standard ones are rubbish)
> 2) Added an IEC mains socket (much more convenient)
> 3) Replaced speaker cable binding posts
>
Dunno about the newer Hafler stuff, but the old (DH200/220) had
poor sounding bridgeing circuitry.  An external "balancing 
module" that does the same thing is available from Sonogy
, but its kinda costly in comparison to the Hafler equipment.
Very good, though.
 
The Haflers also benefit from capacitor upgrades in the 
signal path - many are poor (sonic) quality electrolytics and
ceramic discs.  Film type parallels help significantly.

Grant
From: bellcore!cc.bellcore.com!sma2@uunet.UU.NET
Newsgroups: rec.audio.high-end
Subject: Re: Repairing the AR ES1 turntable
Date: Fri, 22 Jan 1993 11:25:22 -0500
Organization: University of Wisconsin - Milwaukee
	(queueing-rmail) id 112944.18458; Fri, 22 Jan 1993 11:29:44 EST
  (5.65c/IDA-1.4.4 for <walter!uunet!spool.mu.edu!uwm.edu!csd4.csd.uwm.edu!info-high-audio-request@porthos.cc.bellcore.com>); Fri, 22 Jan 1993 11:11:27 -0500
  (5.65c/IDA-1.4.4 for porthos!walter!uunet!spool.mu.edu!uwm.edu!csd4.csd.uwm.edu!info-high-audio-request); Fri, 22 Jan 1993 11:25:22 -0500
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

as a repairman, with that damage, give up the ghost, it'll never work.
Sam Agin
Sam's VCR repair
From: Al.Conte@EBay.Sun.COM (Al Conte)
Newsgroups: rec.audio.high-end
Subject: Re: EAD DSP 7000 Upgrade
Date: 26 Jan 1993 17:25:27 GMT
Organization: Sun Microsystems, Inc.
Distribution: world
Reply-To: Al.Conte@EBay.Sun.COM
NNTP-Posting-Host: 129.89.7.4
Content-Length: 708
Originator: tjk@csd4.csd.uwm.edu

>I have a DSP 7000 (original w/receiver chip upgrade) and am curious about
>the value of their upgrade package (which would make it a "series II").

>I know what's in the package and how much it costs...does anyone have any
>comments on how it sounds?


I just got off the phone with EAD not 5 minutes ago.
I was talking with Greg over there, and he said that the new upgrade
consists of a change from the Analog Devices DAC chips to the new
Burr Brown units, (the same ones in the top of the line Theta unit.
Greg said that if you like the unit now with the crystal upgrade and the
AD DACs, you'll love the new Burr Brown units.
The cost is $449.00 bucks.
I'm sending mine in tomorrow morning.


Al Conte
From: <MPA15C!ARTHUR@TRENGA.tredydev.unisys.com>
        Please change any mailing lists or aliases.
        Both the old and the new addresses will work for a short time.
Newsgroups: rec.audio.high-end
Subject: Re: CJ Amp for Sale
Date: 21 JAN 93 12:49
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Comments: Automatic Return Receipt Requested
Originator: tjk@csd4.csd.uwm.edu

Tom, if I may have a brief space for a personal issue: A gentleman had
contacted me about the amp I offered in Digest #18.18; an unexplained software
corruption here caused me the loss of several messages, including his.  With
our somewhat shaky Internet gateway I'm not certain if he ever got my initial
personal response.  If he's still interested, I'll need to be re-contacted.  If
he never got my Email, we'd better go landline: work 714-380-6335; home
714-472-8915.  Thanks.

  Arthur L. Shapiro        ARTHUR%MPA15C@TRENGA.TREDYDEV.UNISYS.COM
  Software Engineering
  Unisys Corporation       Speaking as a civilian, rather than for
  Mission Viejo, CA        Unisys, unless this box is checked: [ ]
From: gmw1@cunixa.cc.columbia.edu (Gabe M Wiener)
Newsgroups: rec.audio.high-end
Subject: FOR SALE: High-end gear
Date: Sun, 24 Jan 1993 19:56:08 GMT
Organization: Columbia University
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

I have the following high-end equipment for sale:

Mirage M-1 speakers, originally purchased 1989, with
new midrange drivers updated by Mirage, with 1-meter
MIT 750-extended speaker cable.  Speakers are bi-wirable    $3,500
(your pickup from New York City)

Mark Levinson 26S preamplifier with phono section	$4,700 + shipping

Audio Reseach DAC-1/20
includes 1-meter MIT Shotgun cables			$3,000 + shipping

Lexicon CP-1 surround processor				$850 + shipping


--
Gabe Wiener - Columbia Univ.     "This 'telephone' has too many shortcomings 
gmw1@cunixa.cc.columbia.edu       to be seriously considered as a means of 
N2GPZ in ham radio circles        communication. The device is inherently of
72355,1226 on CI$                 no value to us." -Western Union memo, 1877
From: mblisd!isdserv1!chrism@sunaus.Aus.Sun.COM (Chris Mouzouris)
Newsgroups: rec.audio.high-end
Subject: Bridged Amps and Hafler DH120 Mods
Date: Tue, 26 Jan 93 17:00:54 EST
Organization: University of Wisconsin - Milwaukee
NNTP-Posting-Host: 129.89.7.4
Content-Length: 869
Originator: tjk@csd4.csd.uwm.edu

Hi,
I have a pair of Hafler DH120's power amps which I run in bridged mode.
I have read that bridged amplifiers can suffer from 'load sensitivity'
and am wondering - 

1) If this is true?
2) If so, why?
3) Can this be corrected?

I am also after any recommendations/information regarding relatively simple
upgrades that can be made to these amplifiers. I have already made the 
following modifications -

1) Replaced the input RCA's (the standard ones are rubbish)
2) Added an IEC mains socket (much more convenient)
3) Replaced speaker cable binding posts
  
I am planning to 'hardwire' them in bridged mode and attempt to bypass
the ambience recovery switch/circuitry.

Any other suggestions/warnings would be most appreciated.

Thanks,

-----------------------------------
Chris Mouzouris
GPO Box 5215
Sydney NSW
Australia  2001
-----------------------------------
From: nm1@ukc.ac.uk (N.McBride)
Newsgroups: rec.audio.high-end
Subject: Linn Klyde
Date: 25 Jan 93 16:15:12 GMT
Organization: Computing Lab, University of Kent at Canterbury, UK.
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


In reply to the question on the Linn Klyde.....

I had an Asaka, and recently decided on a new cartridge. The
Klyde, in my opinion, was a good deal better than the Asaka,
though perhaps not quite as `euphonic'. All in all I'd
rate the Klyde somewhere around Karma territory.

However, it was the Arkiv that impressed me. It made the
Trioka sound bad! With this cartridge, I think Linn have
really got it right. Although value for money is always
hard to comment on, I reckon it's worth the extra.
In fact I bought one. And think it's worth every penny.

Neil McBride
Unit for Space Sciences
University of Kent, UK.
From: gds@aluxpo.att.com
Newsgroups: rec.audio.high-end
Subject: New Hafler Kits???
Date: Wed, 27 Jan 93 13:29:25 EST
Organization: AT&T
Distribution: usa
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

	I currently have a 13 year old Hafler DH-200 that I have been
	very happy with. I am going to upgrade soon and would like to
	know if Hafler equipment is still available in kit form?

	Glenn
From: weems@cs.umass.edu (CHIP WEEMS)
Newsgroups: rec.audio.high-end
Subject: Linn Klyde
Date: 22 Jan 93 22:28:00 GMT
Organization: University of Massachusetts CS Department
NNTP-Posting-Host: 129.89.7.4
News-Software: VAX/VMS VNEWS 1.41
Originator: tjk@csd4.csd.uwm.edu


Does anybody have personal experience with the Linn Klyde cartridge?
I'm curious as to how it compares with their other models such as the
Karma, Troika, and Asaka. Has anybody heard the Arkive yet? If so,
did you feel it was $1000 better than the Klyde?

Chip
From: worden@silver.ucs.indiana.edu (elizabeth worden)
Newsgroups: rec.audio.high-end
Subject: Re: Moving coil headamp
Date: Thu, 21 Jan 1993 17:06:41 GMT
Organization: Indiana University
Distribution: usa
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

In article <1jmi78INNi3v@uwm.edu> qazi@csd4.csd.uwm.edu (Aamir Hafeez Qazi) writes:
>
>My dad has a Powerlight Studio MC-5 Moving Coil Headamp (or pre-preamp)
>for use with a moving coil cartridge.  He doesn't need it anymore, so I
>thought I'd ask if anyone is interested in purchasing it.  I am wondering

I also have the same type of pre-preamp.  Is anyone interested?
From: rup@piis10.joanneum.ac.at (Georg RUPPERT (DIBAG))
Newsgroups: rec.audio.high-end
Subject: Re: tube amp design -- new Glass Audio
Date: 26 Jan 1993 16:25:06 GMT
Organization: Technical University of Graz, Austria
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

John A. Shriver (jas@proteon.com) wrote:
: .....
: Definitely must reading for tube amplifier homebrewers.  Well written,
: well edited, with logical and readable schematics.  Just about on a
: par with a good Crowhurst article.
: 
: If you had given up on Glass Audio due to the rather spotty editorial
: content (ancient articles, inscrutable schematics, bad writing) in
: 1992, this article alone is worth the $20 a year.
: 

As being from Austria, Europe, I have never heard anything about this
magazine. Could you give me information about subscription, please?

Regrets,
Georg.

[Post it. -tjk]

-----
Georg RUPPERT                         | e-mail: rup@piis10.joanneum.ac.at
Institute for Digital Image           |         
Processing                            | phone:  (++43/316) 8020-755
JOANNEUM RESEARCH GRAZ /  AUSTRIA     | fax:    (++43/316) 8020-720
From: caudle@owlnet.rice.edu (Chris Aaron Caudle)
Newsgroups: rec.audio.high-end
Subject: Re: Two great mysteries of audio
Date: Fri, 22 Jan 1993 20:54:58 GMT
Organization: Rice University
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu

In article <1jov32INN53@uwm.edu>, ken@isgtec.com (Ken Newman) writes:
|> 
|> 
|> Two things I've been wondering about or been annoyed by:
|> 
|> 1) Why are there no pre-recorded metal cassettes, or no pre-recorded
|>    Dolby C cassettes? Every decent cassette deck for many years
|>    (even car decks, for crying out loud) has had metal and Dolby C
|>    capability. There must be some demand? Sure metal tape is expensive
|>    but so are CD's.
|

Mainly because not EVERYONE has a Dolby C deck, and commercially available
material needs to be downwardly compatible.  As for metal, I don't know.  
Most new cassettes are recorded on chrome; maybe the record distributors
have decided that the quality of the media doesn't justify more expensive
tape than that, or, more likely, that most people just don't care, so why
bother?  They are in this to make a profit, for the most part, and not 
because they are idealistic about preserving art for future generations.
 
|> 2) Why do they not "record" or "press" or "download" :) or whatever
|>    the appropriate term is, on both sides of a CD? Again, this would
|>    be more expensive, sure, but probably much less than two CD's?
|>    I certainly wouldn't mind flipping a CD over if I could save 
|>    several bucks and obtain the several other obvious advantages
|>    of this.
|
Because there would be no place for a label.

Chris Caudle           
caudle@owlnet.rice.edu
From: gfl@herahera.cc.bellcore.com (lenahan,grant f)
Newsgroups: rec.audio.high-end
Subject: Cartridge reccommendation
Date: Wed, 27 Jan 93 15:31:46 GMT
Organization: Bellcore, Livingston, NJ
  (5.65c/IDA-1.4.4 for rec-audio-high-end@uunet.uu.net); Wed, 27 Jan 1993 10:31:49 -0500
NNTP-Posting-Host: 129.89.7.4
Originator: tjk@csd4.csd.uwm.edu


Hello, folks.

I'm looking for net.wisdom regarding a phono cartridge.

My preferences:
	-neutral/warm balance
	-good tracking
	-compliance compatable with Well Tempered Arm
	-output not important (low output MC OK)
	-considered Sigma Genesis 2000, Grado Sig TLZ
	-used with Sonogy Concerto / RIAA
	(can load for anything 1 ohm => 100k, 20 dB => 80 dB)
	
I'm looking for serious comments only, from those who have
made tough comparisons.  My past experiences have been:

Talisman S => I hate this bright, screechy dog
Blue POint => ditto
Supex 1000/2000 => Nice, but poor tracking
Grado Sig 8M => nice, but no cigar
Shure V15V MR => better than i expected, great bass, lousy detail
Sony ??44 => demo in arm today, shows promise (at $60 !!)

Thanks, folks!

Grant
gfl@hera.cc.bellcore.com
From: sgg5e@galen.med.Virginia.EDU (Stephen G. Graber)
Newsgroups: rec.audio.high-end
Subject: Moving Coil "Fluxbusters"
Date: Fri, 22 Jan 1993 21:50:24 GMT
Organization: University of Virginia
NNTP-Posting-Host: 129.89.7.4
Summary: Do they work?  Lets beat this one to death!!!!!!
Originator: tjk@csd4.csd.uwm.edu

Several people have expressed the opinion that "fluxbusters" can be of
use in improving the deteriorated sound of moving coil cartridges.
The idea is that a magnetic flux builds up in the coil windings of
these cartridges, adversely affecting their sound.  Periodic
degaussing is supposed to remove this flux and restore the sound.
I must admit to being both skeptical, and ignorant of the theoretical
reasons why it might (or might not) work.  Seems to me it would be
interesting to hear both theoretical and empirical points of view.
If I could locate such a device I'd try it on my now lifeless sounding
Monster AG1000 and make up my own mind!  The stylus is a bit worn but
not bad by inspection with a microscope- the cartridge probably has
close to a 1000 hours on it.  Its my feeling that the cantilever
suspension has worn out.  Comments anyone?  Thanks!

--
Stephen G. Graber                  sgg5e@Virginia.EDU
Department of Pharmacology         
University of Virginia             work: (804) 924-9977
Charlottesville, VA 22908          home  (804) 973-1283