I'm making some 2U high rack mounting boxes, and I'm trying to select
a good multipole connector.
There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC 516 series.

Any other suggestions?



martin


Opinions are like assholes -- everyone has one

"martin griffith" wrote in
message ...

I'm making some 2U high rack mounting boxes, and I'm
trying to select
a good multipole connector.

There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC
516 series.

Any other suggestions?

A lot depends on the duty cycle for this application. How
often will the connectors be mated and unmated?


Opinions are like assholes -- everyone has one

Is there an echo in here? ;-)

My version is

Opinions are like buttholes - everybody has at least one.

On Mon, 23 May 2005 07:55:52 -0400, in rec.audio.pro "Arny Krueger"
wrote:


"martin griffith" wrote in
message ...

I'm making some 2U high rack mounting boxes, and I'm
trying to select
a good multipole connector.

There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC
516 series.

Any other suggestions?

A lot depends on the duty cycle for this application. How
often will the connectors be mated and unmated?
Hi Arny

I'm trying to standardise into a 2U format box with:

1) semi or permanent install
2) line level only/ balanced signals assumed
3) gold plating on contacts
4) inexpensive

XLRs take up too much space on the backpanel and if the XLRs are pcb
mounting it generally increases the PCB layout problems (for me
anyway).

I'd thought of using two part 5.08mm pcb r/a edge connectors, but they
seem to be difficult to get with Au flash. MOQ's etc.

So I keep coming back to EDAC's. Can you recommend any other
connectors?



martin


Opinions are like assholes -- everyone has one

"martin griffith" wrote in message
...
On Mon, 23 May 2005 07:55:52 -0400, in rec.audio.pro "Arny Krueger"
wrote:


"martin griffith" wrote in
message ...

I'm making some 2U high rack mounting boxes, and I'm
trying to select
a good multipole connector.

There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC
516 series.

Any other suggestions?

A lot depends on the duty cycle for this application. How
often will the connectors be mated and unmated?
Hi Arny

I'm trying to standardise into a 2U format box with:

1) semi or permanent install
2) line level only/ balanced signals assumed
3) gold plating on contacts
4) inexpensive

XLRs take up too much space on the backpanel and if the XLRs are pcb
mounting it generally increases the PCB layout problems (for me
anyway).

I'd thought of using two part 5.08mm pcb r/a edge connectors, but they
seem to be difficult to get with Au flash. MOQ's etc.

So I keep coming back to EDAC's. Can you recommend any other
connectors?

The advantage of the EDACs is that they use "hermaphroditic"
pins, they are "self-wiping", and big enough to manually
assemble without a lot of specialized tools and a microscope.
But I wouldn't use them for any kind of location applications
as the pins are too fragile.

In article writes:

I'm trying to standardise into a 2U format box with:

1) semi or permanent install
2) line level only/ balanced signals assumed
3) gold plating on contacts
4) inexpensive

DB-25s, 8 channels to a connector, would be my choice for this based
on your criteria. I don't like them for things that are regularly
being connected and disconnected, but you don't do that. They have
gold plated contacts, they're inexpensive, and they work fine for
balanced connections. In addition, there's a dominant wiring format
used by many manufacturers (as well as a couple of variations) so you
can buy off-the-shelf pre-made cables if you need something in a hurry
or want to save time or trouble with your wiring and can find
something in the length you need.


--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo

For 16 screened, balanced ccts
I have used 56-pole varicons made by Varelco, EDAC or Connectrol.
Usually female housings for o/ps and male housings for i/ps, and you may
need to make extender cables so you will need covers. Some are anchored with
a central threaded bolt. Male sure mating receptacle has a corresponding
embedded nut.
If using multi-pair in one sheath it's very expensive, or use 16 runs of
foil+screened twin 7/0.2 and a series of numbered marker sleeves, and
expandable jacket..
Use chunky sleeves to bind "wrists" of stubs. Use 1mm synth rubber sleeving
to cover screen wires.
Configuration - Stick to "triangles" of hi, lo, scrn laid out as per
BBC-multi format or per another suggested trade format (can't recollect its
name).
However, you will need a supply of crimp or solder gold-plated pins. Allow
5% for failed attempts,
and crimper, loader, and extractor tools. Each cleaved pin handshake is
always 100% mated with its 4 corner areas of positive connection.
Of course, there are some ranges of circular connecting pin-and-socket
friction mouldings doing a similar job, but it's always down to time and
money.

"martin griffith" wrote in message
...
I'm making some 2U high rack mounting boxes, and I'm trying to select
a good multipole connector.
There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC 516 series.

Any other suggestions?



martin


Opinions are like assholes -- everyone has one

In article ,
martin griffith wrote:
I'm making some 2U high rack mounting boxes, and I'm trying to select
a good multipole connector.
There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC 516 series.

Any other suggestions?

The Whirlwind connectors are a lot more rugged than the EDAC stuff. They
are more expensive, but you can drop them in the mud. It's too easy to
bend pins on EDAC connectors in the field.

For fixed studio use, the EDAC connectors are fine. Paired DB-25s are
cheaper, though, and gaining in popularity.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

On 23 May 2005 09:54:16 -0400, in rec.audio.pro
(Scott Dorsey) wrote:

In article ,
martin griffith wrote:
I'm making some 2U high rack mounting boxes, and I'm trying to select
a good multipole connector.
There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC 516 series.

Any other suggestions?

The Whirlwind connectors are a lot more rugged than the EDAC stuff. They
are more expensive, but you can drop them in the mud. It's too easy to
bend pins on EDAC connectors in the field.

For fixed studio use, the EDAC connectors are fine. Paired DB-25s are
cheaper, though, and gaining in popularity.
--scott
Those Whirlwind connects are excellent, I'll probably layout the back
panel so there is a poss. of re engineering for DT12 series.

I've always had a utter loathing of D type connectors, badly designed
IMHO, you can never see the pin numbers with out a magnifying glass,
and there are so many vendors, they all seem to want you to buy a
different grimp tool, ugh.



martin


Opinions are like assholes -- everyone has one

"martin griffith" wrote ...
I've always had a utter loathing of D type connectors, badly designed
IMHO, you can never see the pin numbers with out a magnifying glass,
and there are so many vendors, they all seem to want you to buy a
different grimp tool, ugh.

And yet these words likely passed through at least a dozen of
them between my keyboard and your screen. If you don't like
the competition, you can stick with the original "Amp" version.
And, unlike EDAC, they are available with solder-cup pins so
no crimp tool is needed and they are repairable in the field.

And, BTW, exactly which connectors CAN you read the pin
numbers without a magnifying glass and a strong light?

On Mon, 23 May 2005 08:13:42 -0700, in rec.audio.pro "Richard Crowley"
wrote:



And, BTW, exactly which connectors CAN you read the pin
numbers without a magnifying glass and a strong light?

I *knew* I shouldn't have said that as soon as I hit "send".

anyway, readable connectors:
UK mains plug
XLR
Mono Jack plug ( doesn't need reading)


martin


Opinions are like assholes -- everyone has one

"martin griffith" wrote ...
"Richard Crowley" wrote:

And, BTW, exactly which connectors CAN you read the pin
numbers without a magnifying glass and a strong light?

I *knew* I shouldn't have said that as soon as I hit "send".

anyway, readable connectors:
UK mains plug
XLR

I wish. Maybe my eyes are just going bad.

Richard Crowley wrote:

And, BTW, exactly which connectors CAN you read the pin
numbers without a magnifying glass and a strong light?

Cinch-Jones connectors!
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

martin griffith wrote:

I've always had a utter loathing of D type connectors, badly designed
IMHO, you can never see the pin numbers with out a magnifying glass,
and there are so many vendors, they all seem to want you to buy a
different grimp tool, ugh.

You're using the wrong kind. DO NOT use any of the crimp-on ones. Do
not use ANY of them for audio unless they have machined pins.

These were originally very rugged military-spec connectors, but there have
been a large number of cheap variants made over the years as the computer
industry adopted them (and the computer industry got cheaper and cheaper).
But the original machined-pin ones are still very solid and reliable, and
they have gold-plating and good solder cups. It's true that the pin
numbers are hard to read, though.
--scott


--
"C'est un Nagra. C'est suisse, et tres, tres precis."

On 23 May 2005 11:33:44 -0400, in rec.audio.pro
(Scott Dorsey) wrote:

martin griffith wrote:

I've always had a utter loathing of D type connectors, badly designed
IMHO, you can never see the pin numbers with out a magnifying glass,
and there are so many vendors, they all seem to want you to buy a
different grimp tool, ugh.

You're using the wrong kind. DO NOT use any of the crimp-on ones. Do
not use ANY of them for audio unless they have machined pins.

These were originally very rugged military-spec connectors, but there have
been a large number of cheap variants made over the years as the computer
industry adopted them (and the computer industry got cheaper and cheaper).
But the original machined-pin ones are still very solid and reliable, and
they have gold-plating and good solder cups. It's true that the pin
numbers are hard to read, though.
--scott
I just found the 301 pages of PDF catalogue for the Cannon ITT D
types. (1998)

I hadnt realised that there was a European footprint (mm), as opposed
to a US (inch) footprint. They have probably just swapped the INCH
(mm) to MM (inch) dimensions on the diagrams, maybe.

I think I'll stay with the EDAC. It's not perfect, but it's close
enough for me.

Now, which pinout should I copy.........................



martin


Opinions are like assholes -- everyone has one

Opinions are like assholes -- everyone has one

What's the difference between a toilet and a monitor engineer?
Toilets only deal with one asshole at a time!

Sorry, I could not help myself...

Scott Dorsey wrote:

In article ,
martin griffith wrote:
I'm making some 2U high rack mounting boxes, and I'm trying to select
a good multipole connector.
There are 16 balanced in and 16 balanced out's.

I'm think of sticking with the good old fashonioned EDAC 516 series.

Any other suggestions?

The Whirlwind connectors are a lot more rugged than the EDAC stuff. They
are more expensive, but you can drop them in the mud. It's too easy to
bend pins on EDAC connectors in the field.

Replacing EDAC pins on the multicores we used for lighting control was a
regular maintenance item in my AV tech days.


For fixed studio use, the EDAC connectors are fine. Paired DB-25s are
cheaper, though, and gaining in popularity.

I used DB25s on an audio multicore I made 34 yrs ago ( for live work ) -
couldn't afford anything else. Never ever had a single connection problem. It
still worked when I dragged it out for an event about 5 yrs back. Don't use
the cheap versions of the original with those 'formed' pins though.

Graham

In article writes:

For fixed studio use, the EDAC connectors are fine. Paired DB-25s are
cheaper, though, and gaining in popularity.

The use of the DB-25 connector for audio applications is rapidly
becoming close on my list of least favorite connectors to the mini
phone jack. They aren't meant for many insertions, the securing screws
and nuts don't always match (in threading or length) and they're fussy
to assemble unless you're using small diameter wire and crimp pins.


--
I'm really Mike Rivers )
However, until the spam goes away or Hell freezes over,
lots of IP addresses are blocked from this system. If
you e-mail me and it bounces, use your secret decoder ring
and reach me he double-m-eleven-double-zero at yahoo