HDTenEightyP/NetNews huggingface dataset:
From: kludge@grissom.larc.nasa.gov ( Scott Dorsey)
Subject: Re: XLR-type Connector of choice?
Organization: NASA Langley Research Center and Reptile Farm
Date: Sun, 16 Aug 1992 22:59:22 GMT

In article <1992Aug16.183759.7010@ac.dal.ca> powell@ac.dal.ca writes:
>John Henders writes:
>> 
>> 	I want to add a third vote for Switchcraft, especially in live 
>> situations. Even the newest Neutrik's have exposed plastic parts on
>> their plugs, and these break.
>> 	However, I just saw a new xlr from Cannon, and it is very nice, 
>
>This wouldn't by any chance be the Cannon AXR?
>If so, IMHO bad choice as the strain relief is a big screw that just 
>tightens down on the cable and crushes it.

I second this.  I've had problems using Amphenol low-triboelectric noise
cables with the things; the pressure combined with the very soft insulation
causes a lot of early failures.

I use the Switchcraft connectors, but that's mostly because the local
electronics place stocks them.  I never seem to have enough time to order
connectors ahead of time; I always need them in an emergency when I don't
have a particular cable.  I've never had one go bad (which is saying
something).  The Neutrik connectors are great, too, but they take a week
or so to get around here.
--scott
Newsgroups: rec.audio.pro
From: tchannon@black.demon.co.uk (Tim Channon)
Subject: XLR-type Connector of choice? 
Distribution: world
Organization: null
Date: Sat, 15 Aug 1992 00:16:09 +0000

>Is there such a thing as a better and a worse XLR-type connector,
>or are Switchcraft, ITT/Cannon, and all of the others about the same?
>
So everyone uses Neutrix! So do we but in this case it's PCB mount since we 
make equipment. In the early days they did have serious quality problems but 
this is long gone.

A point to watch though is incompatibility -- not all connecters fit 
together mechanically.

Anouther point is availability of hard gold plate if you need it.

Third point -- plastic is light so that might be an advantage.

  TC. 
    E-mail: tchannon@black.demon.co.uk or tchannon@cix.compulink.co.uk
From: chrisc@gold.gvg.tek.com (Chris Christensen)
Newsgroups: rec.audio.pro
Subject: Re: Help converting optical SPDIF to electrical form
Date: 13 Aug 92 17:30:13 GMT
Organization: Grass Valley Group, Grass Valley, CA

In article <4674@blue.cis.pitt.edu.UUCP> ebe@pitt.edu (Elmer Beachley) writes:

>I would like to connect the optical output of my cd player (which I
>presume to be SPDIF format) to the electrical (rca connector) interface
>on my AudiomediaII board (which is definitely SPDIF format).  Does anyone
>know of a converter that does optical to electrical conversion?  A
>schematic would be o.k., too.

I believe that there are High-end audio convertors that would fill
your needs but that's not what I am going to suggest!

In looking at the schematics for my Denon DTR-2000 DAT machine I have
noted that the optical input (and output for that matter) do the
conversion from 'tricity to light.......

For your application I believe that you would only need the optical
reciever and then built up the coaxial driver (and that was done with
simple electronics on my Denon.....

I will supply that page of the schematic if you are interested?
-- 
Chris Christensen                  The opinions I express are my own,
chrisc@gold.gvg.tek.com            and sometimes they are wrong!
916-478-3419 FAX 916-478-3887      After all, I *AM* only human.
From: jrusby@darkwing.uoregon.edu (Jim T. Rusby)
Newsgroups: rec.audio.pro
Subject: digital effects for dig. audio workstations
Date: 12 Aug 92 15:56:01 GMT
Organization: University of Oregon Network Services

SOmeone recently posted an inquiry with regards to digital effects units
that feature digital I/O. My modem quit before I could reply, so I cannot
reply to the party directly.  We have a workstation and digital effects
unit interfaced via digital I/O.  Please e-mail me directly and I would be
happy to discuss this setup.
jrusby@darkwing.uoregon.edu

thanks-
Jim
From: st_waldman@zodiac.dsto.oz.au
Newsgroups: rec.audio.pro
Subject: Loudspeaker design software available
Date: 17 Aug 92 03:48:25 GMT
Organization: D.S.T.O. Aeronautical Research Laboratory

I have available a software program called CALSOD (Computer-Aided
Loudspeaker System Optimization and Design), which I have
written in my spare time.

It uses a SPICE-like data file approach to allow the speaker designer
to simulate the sound pressure and impedance response of individual
loudspeaker drivers. The models include the complex impedance of a
driver, as well as the phase response of the sound pressure. These
are created by minimum-phase curve-fitting techniques, which seek to
match any data sheet information or other measured data that might
be available.

A crossover network can be defined in any arbitrary configuration,
and an optimizer is included to help with the design work. Note that
the summed response of multiway systems can be optimized, as can the
more simple case of the filtered response of individual drivers when
connected to the crossover.

The program has modules that allow the user to analyse the sound 
pressure and impedance response of drivers in vented-box, closed-box,
passive-radiator, and band-pass enclosures. The voice-coil inductance
is modelled using frequency dependent resistive and reactive terms,
yielding excellent agreement with measured data. This ensures that
your crossover termination takes into account the drivers true
impedance response, and does not simply assume a constant resistance 
plus a simple inductance.

The cost is AUD$99 (approx. US$75), and this includes air mail postage.
The user manual is on a disk, and runs to about 200 pages, and includes
full details of all the modules. 

There is a professional edition of the program that costs AUD$449. This
has support for active crossovers, off-axis driver radiation patterns, 
imports data from common audio test systems, and a full printed manual
is included. The optimizer is also improved, and can handle multiple
responses while carrying out the crossover optimization. The curve-fitter
is also able to automatically fit impedance curves to determine Fs, Qms,
and Qes (yielding Qts).

If you have any questions, please email me directly. If you provide 
your full mailing address, I can send you out a short 6-page brochure
describing the programs features.

Witold Waldman
WITOLD@HOTBLK.DSTO.GOV.AU
From: collin@angelo.amd.com (Collin K. Ong)
Newsgroups: rec.audio.pro
Subject: Help! Info needed on woofers
Date: 13 Aug 92 16:58:02 GMT
Organization: Advanced Micro Devices, Santa Clara, CA

I've located some woofers that I'm interested in, but they have no specs,
so I was hoping somebody could look them up and give me some specs, or some
off the cuff general knowledge about them.

Here's what I know:

10" Subwoofer, dual voice coil
Poly cone/foam suspension
64oz magnet
200 Watts (peak?)

They are manufactured by Carbonneau Loudspeakers in West Michigan and 
the box is labeled: "Perfect Interface, 6-10in STS-108DVC"

The retailer claims that they were used in Rockford Fosgate boxes, but they
appear new.  An Ohmmeter measured 6.9 ohms and 7 ohms across each of the
coils.  Does this automatically mean that they are 8 ohm rated?  I found this
odd because I expected Rockford stuff to be 4 ohm for car.

I'm looking for Thiel-Small parameters, general reputation of Carbonneau, or
anything else on these woofers.  What is a normal price for these?

Thanks alot...

Collin Ong
collin@brahms.amd.com
From: jrusby@darkwing.uoregon.edu (Jim T. Rusby)
Newsgroups: rec.audio.pro
Subject: Re: Rudy Van Gelder: Digital vs Analog
Date: 20 Aug 92 21:02:14 GMT
Organization: University of Oregon Network Services

>In article <18030003@hpnmdla.sr.hp.com> kurts@hpnmdla.sr.hp.com 
>(Kurt Strain) writes:
>
>(text edited)
>
>>I think if you want to moderate a group, get it moderated. Don't have some
>>wise ass make cheap shots on e-mail.  It really makes some of you guys look
>>particularly mean and snobby.  That's my impression so far.

Really, most of the pro audio posters have exhibited common courtesy and
respect for others in their communications. This is an attitude lacking in
the preceding paragraph. Is it really necessary to get personal about
this? My son is sitting next to me and he is surprised at the way adults
treat each other at times.

This is audio, not politics.  
Newsgroups: rec.audio.pro
From: tchannon@black.demon.co.uk (Tim Channon)
Subject: Non-linear digital? 
Distribution: world
Organization: null
Date: Sat, 22 Aug 1992 06:31:37 +0000

>Hi guys. I'm not a pro and I have no desire to be in any flame war (this week>!)
>As an honest question, which linearity problems do you mean? The specs I've
>seen for eg the Crystal ADC and quite a few low bit DAC's suggest they are
>linear to very low levels. Are these specs hiding something?

Not that I'm aware. The specs say what they say and no more.

Whether there are questions that we are not asking is anouther matter. You may 
find the papers reprinted in the 1992 Crystal databook make interesting 
reading.

Sampling jitter is an example of something which is causing problems. This is 
something which is more of a system problem than anything to do with the A/D 
or D/A. Dirty in dirty out. (one of the reprints discusses this)

You may have seen wow and flutter figures quoted as 'unmeasurable' or 'zero' 
in some digital tape machine specs. If wow is present it frequency modulates 
the sampling clock. I'll let you work out how  rapidly and by how much the 
clock can move if this sort of 'jitter' (not strictly) is kept withing 100ps 
per sample.

Just for fun I'll christen this 'witter'!

  TC. 
    E-mail: tchannon@black.demon.co.uk or tchannon@cix.compulink.co.uk
                                
Newsgroups: rec.audio.pro
From: bower@pecan.cns.udel.edu (Tyson Bower)
Subject: Re: speaker cabinet software
Organization: University of Delaware, Newark
Distribution: na 
Date: Wed, 12 Aug 1992 02:54:44 GMT

There is a shareware program available that performs a similar function.
It will run on IBM PC's and clones with either CGA or EGA capability.
A math coprocessor and/or a fast machine is nice, but not necessary.
It is called perfect box, and is available via anonymous FTP.
I am not completely sure about this address, but you can try it
and see if you can't hunt it down.

ftp 128.89.7.4

Try looking in the directory   pub/high-audio/software

It has a large database with it containing over 800 pre-loaded
drivers.  You can add as many of your own as you wish.  It concerns
itself only with enclosures for the woofer; midrange and tweeter
considerations are not computed.
From: jpl10@DUTS.ccc.amdahl.com
Newsgroups: rec.audio.pro
Subject: Pro DJ CD players
Date: 15 Aug 92 13:18:31 GMT
Reply-To: jpl10@DUTS.ccc.amdahl.com ()
Organization: Amdahl Corporation, Sunnyvale CA

I'm looking for some advice regarding professional CD players for DJ use.
Specifically:  1)  What model #'s do you recommend from Sony, Denon,
                   Technics, and Tascam players?

               2)  What publications/magazines are available that have
                   made comparisons on any of these players?

Basically what I'm looking for in a player is both balanced and unbalanced
outputs, pitch control, and one that is durable enough inside and out that
can endure the stress of mobile DJ use.  I don't need any special features
except for pitch control as mentioned above.  Single tray unit preferable.
I have only seen the Denon 2000F locally and have heard good things about
it but would like to look at other units comparable before making a
decision.  Also for those of you reading this that live in the Northern
California Bay Area, what shops can you recommend that sell players such
as these?

Please reply via private email.  Thanks in advance!

James
jpl10@amail.amdahl.com
jpl10@DUTS.ccc.amdahl.com
From: kurts@hpnmdla.sr.hp.com (Kurt Strain)
Date: Thu, 20 Aug 1992 17:59:21 GMT
Subject: Re: Rudy Van Gelder: Digital vs Analog
Organization: Milky Way Galaxy
Newsgroups: rec.audio.pro

In rec.audio.pro, v035550@stortek.com (Steve Monroe) writes:

BRING IT BACK? what are you talking about?  as far as  bringing                 
anything back,I was unaware that Mr Van Gelder's quote had been                 
posted here before.  As far as  what this quote was "supposed"                  
to do, I just thought people on this group would be interested                  
in quotes from people like Rudy Van Gelder.                                     
                                                                                
If you think I did this merely to provoke a fight, or start                     
some type of debate, take your miserable little goddamn ego                     
over to alt.conspiracy. I am sick of maggots like you accusing                  
before you have ANY idea of what the facts are:  I was trying                   
to pass on something that was obviously within the scope of                     
discussion for this group.  I thought you would find it interesting.            
                                                                            
Someone else mentioned that this article was duplicated on                      
rec.audio.high-end.  It was a mistake OKAY?                                     



My mistake.  You and Jensen are just sweethearts.  Sorry to interrupt
your name-calling.  Continue.
Newsgroups: rec.audio.pro
From: g_house@goes11.enet.dec.com (Greg House)
Subject: Re: Lindsay-Geyer cables. Any news yet?
Keywords: lindsay,geyer,cable,test
Reply-To: g_house@goes11.enet.dec.com (Greg House)
Organization: Digital Equipment Corporation
Date: Wed, 12 Aug 1992 21:39:12 GMT


In article <5001@gold.gvg.tek.com>, chrisc@gold.gvg.tek.com (Chris Christensen) writes:

|>I will report move info when I have it.  Remember let's kep an OPEN
|>mind!

...and an open pocketbook.  ;^)

Thanks for any information you can give us, Chris.  Should be interesting 
reading.

Greg
From: MATGBB@LURE.LATROBE.EDU.AU (BYRNES,Graham)
Newsgroups: rec.audio.pro
Subject: Re:Non-linear digital?
Date: 21 Aug 92 02:13:43 GMT
Organization: La Trobe University
X-News-Reader: VMS NEWS 1.22

In <BtA9G9.1yz@news.larc.nasa.gov> kludge@grissom.larc.nasa.gov writes:
> 
> Digital recording doesn't really do a good job of reproducing the original
> signal.  There are real linearity problems in any digital system that I have
> yet seen.  On the other hand, analogue recording doesn't do a very good job
> either.  Every analogue system I have used has been noisy and had an uneven
> frequency response.  Recording in general is imperfect.  Only live music is
> any good at all :-).
> 
> --scott
Hi guys. I'm not a pro and I have no desire to be in any flame war (this week!)
As an honest question, which linearity problems do you mean? The specs I've
seen for eg the Crystal ADC and quite a few low bit DAC's suggest they are
linear to very low levels. Are these specs hiding something?
Thanks,
Graham B
Newsgroups: rec.audio.pro
From: tchannon@black.demon.co.uk (Tim Channon)
From: hughc@spectrum.cs.unsw.oz.au (Hugh Clapin)
Newsgroups: rec.audio.pro
Subject: Re: XLR connectors
Date: 21 Aug 92 07:04:28 GMT
Reply-To: hughc@spectrum.cs.unsw.oz.au (Hugh Clapin)
Organization: none


From article <1992Aug12.223743.2753@uicc.com>, by neidorff@uicc.com (Bob Neidorff):
> 
> 
> Is there such a thing as a better and a worse XLR-type connector,
> or are Switchcraft, ITT/Cannon, and all of the others about the same?
> 
> I care about:
> 
> 	Ease of assembly
> 	Durability
> 	Sound Quality
> 	Compatibility with Different Wire Sizes
> 	Cost
> 	Dependability
> 
> Thanks for any comments at all.  I welcome testamonials,
> bug reports, feelings, etc.  Please mail direct.  If there 
> is enough interest, I will summarize to the newsgroup.
> 
>
Whirlwind used to make an XLR that was slightly bigger than
the standard, and so when a Whirlwind XLM was plugged into a
standard size XLF (e.g. Cannon Neutrik, etc.), the connection
would often break under minimal strain. A major bummer.

I don't know if Whirlwind fixed this. The organisation I do some
work for which used them stopped doing so years ago.

Hugh Clapin
hughc@cs.unsw.oz.au
Organization: Junior, Electrical and Computer Engineering, Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.audio.pro
Date: Fri, 14 Aug 1992 09:35:11 -0400 
From: Mark Yeck <my10+@andrew.cmu.edu>
Subject: Re: XLR-type Connector of choice?

I've been using connectors from Whirlwind.  I think they are made by Neutrik,
because they have almost the exact same design. I like them 'cause they're a
bit longer than the Neutrik ones (I guess 'cause they have to fit the Whirlwind
name on them).  Anyway, I've also found Neutrik and Whirlwind XLR's to be a bit
less expensive than Switchcrafts, too.

-mark
From: neidorff@uicc.com (Bob Neidorff)
Newsgroups: rec.audio.pro
Subject: XLR-type Connector of choice?
Date: 12 Aug 92 22:37:43 GMT
Organization: Unitrode Integrated Circuits Corp., Merrimack, NH
Originator: neidorff@makore



Is there such a thing as a better and a worse XLR-type connector,
or are Switchcraft, ITT/Cannon, and all of the others about the same?

I care about:

	Ease of assembly
	Durability
	Sound Quality
	Compatibility with Different Wire Sizes
	Cost
	Dependability

Thanks for any comments at all.  I welcome testamonials,
bug reports, feelings, etc.  Please mail direct.  If there 
is enough interest, I will summarize to the newsgroup.

-- 
Bob Neidorff; Unitrode I. C. Corp.  |  Internet: neidorff@uicc.com
7 Continental Blvd.                 |  Voice   : (US) 603-424-2410
Merrimack, NH  03054-0399 USA       |  FAX     : (US) 603-424-3460
Newsgroups: rec.audio.pro
From: cms2839@ultb.isc.rit.edu (a.stranger)
Subject: Re: XLR-type Connector of choice?
Originator: cms2839@ultb
Organization: Minimalist Music for Hyperactive Children (MMHC)
Date: Fri, 14 Aug 1992 06:46:02 GMT

In article <1992Aug12.223743.2753@uicc.com> neidorff@uicc.com (Bob Neidorff) writes:
>
>
>Is there such a thing as a better and a worse XLR-type connector,
>or are Switchcraft, ITT/Cannon, and all of the others about the same?
>
				so far , my favourites are the whirlwind
connectors , because they are the only XLRs i've seen that make it
possible to remove the outer metal casing without desoldering the
connector itself . this has come in handy in tight micing situations .

-- 
       @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
       @     "Imagination keeps the shadows away  -  Xymox      @
       @~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~@
       @       a.stranger  -  CMS2839@ritvax.isc.rit.edu        @
Newsgroups: rec.audio.pro
From: Dave J <djensen@claven.idbsu.edu>
Subject: Re: XLR-type Connector of choice?
Organization: Morrison Center for the Performing Arts
Date: Thu, 13 Aug 1992 15:08:38 GMT

In article <1992Aug12.223743.2753@uicc.com> neidorff@uicc.com (Bob Neidorff)
writes:
>
>
>Is there such a thing as a better and a worse XLR-type connector,
>or are Switchcraft, ITT/Cannon, and all of the others about the same?
>
>I care about:
>
>	Ease of assembly
>	Durability
>	Sound Quality
>	Compatibility with Different Wire Sizes
>	Cost
>	Dependability
>
>Thanks for any comments at all.  I welcome testamonials,
>bug reports, feelings, etc.  Please mail direct.  If there 
>is enough interest, I will summarize to the newsgroup.
>
>-- 
>Bob Neidorff; Unitrode I. C. Corp.  |  Internet: neidorff@uicc.com
>7 Continental Blvd.                 |  Voice   : (US) 603-424-2410
>Merrimack, NH  03054-0399 USA       |  FAX     : (US) 603-424-3460
>

You should check out the Neutrik (pronounced noi-trick) brand of connectors.
IMO, they offer the most recent innovations in all applicable areas mentioned
above. One major improvement of theirs is a particular model of panel-mounted
shell that is designed to accept either male or female XLR, or female 1/4 inch,
inserts.

Dave Jensen                           You see...what you want to see,
djensen@claven.idbsu.edu              And you hear...what you want to hear. 
expressing only myself                    - Harry Nilsson, "The Point"

Newsgroups: rec.audio.pro
From: charlesg@cco.caltech.edu (Charles Grosjean)
Subject: Re: Help converting optical SPDIF to electrical form
Organization: California Institute of Technology, Pasadena
Date: Thu, 13 Aug 1992 17:36:20 GMT

ebe@pitt.edu (Elmer Beachley) writes:

>I would like to connect the optical output of my cd player (which I
>presume to be SPDIF format) to the electrical (rca connector) interface
>on my AudiomediaII board (which is definitely SPDIF format).  Does anyone
>know of a converter that does optical to electrical conversion?  A
>schematic would be o.k., too.

One solution would be to use a NEC PLR101 (Toslink receiver).  This will
convert your optical out in TTL levels.  From here you just need to massage
that into +/- 0.5V levels for the coax input.  Since your board probably
converts the coax input into TTL at some point, you might just consider wiring
in a switch and hooking the receiver directly into the "Digital Audio
Interface Receiver" as Yamaha calls it =-).

The NEC part (which is also made by Toshiba, HP, etc.) was available at
Marshall a while ago in a kit which contained a transmitter, receiver and
1 meter of optical cable, I'm not sure if it still is.

Charles
Newsgroups: rec.audio.pro
From: gmw1@cunixa.cc.columbia.edu (Gabe M Wiener)
Subject: Re: Help converting optical SPDIF to electrical form
Reply-To: gmw1@cunixa.cc.columbia.edu (Gabe M Wiener)
Organization: Columbia University
Date: Thu, 13 Aug 1992 05:07:49 GMT

In article <4674@blue.cis.pitt.edu.UUCP> ebe@pitt.edu (Elmer Beachley) writes:
>
>I would like to connect the optical output of my cd player (which I
>presume to be SPDIF format) to the electrical (rca connector) interface
>on my AudiomediaII board (which is definitely SPDIF format).  Does anyone
>know of a converter that does optical to electrical conversion?  A
>schematic would be o.k., too.

[Stuff deleted]
>2) buy an SPDIF to AES/EBU protocol translator (~$500) that also provides
>   optical-in/electrical-out.

I'd recommend you get the Digital Domain FCN-1 Digital Format Converter
for ~$400.  Besides doing what you want, it also is one of the most 
useful boxes you will ever own if you're into digital recording.  It
has performed more miracles in the field than any other tool I know
(well, maybe the sphere :-).

Seriously though, the box is essentially any format in, any format out.
Great for cleaning off garbage in the bitstream and for getting two 
supposedly incompatible devices to speak to each other.  Also allows
for assertion/denial of copyright and elimination of SCMS if you should
need it.


--
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
Newsgroups: rec.audio.pro
From: killer@exterminator.cs.hut.fi (Kalle Kivimaa)
Subject: Re: Rudy Van Gelder: D v. A
Organization: Helsinki University of Technology, CS lab
Date: Fri, 21 Aug 1992 23:18:51 GMT

In <1992Aug21.175158.8764@iccgcc.decnet.ab.com> ireland@iccgcc.decnet.ab.com writes:
>loss. And I know alot of people who use analog multi-track decks, but mix
>down in digital with good results.

This is because there aren't any good multi-track digital decks
available.  You can get several dB's of S/N more out of a good
analog deck than of a digital counterpart.
--
************************************************************************
* The night sky over the planet Krikkit is the least interesting sight *
* in the entire Universe.  -- Douglas Adams, HHGTG                     *
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Newsgroups: rec.audio.pro