[sdiy] Using D-Sub connectors as patching elements

[Dave Kendall]

On Feb 21, 2012, at 15:43, Harry Bissell wrote:

> How about D-SUB 9 pin Males on the modules, and female to female 
> cables, THIS way you throw out
> a worn cable. If you use screw-machined male plugs, the pins should be 
> good for many many cycles...
>
> Unfortunately the D-sub cables are not so common anymore...
>
> H^) harry

That seems like a good idea. I may have access to a load of NOS D-sub 
components that were in storage at an A/V place I've worked at.
They probably don't want/need those parts anymore, so it could be a 
cheap and worthwhile experiment (if soldering time is not included in 
that.....)

cheers,
Dave


>
> ----- Original Message -----
> From: Andre Majorel <aym-htnys at teaser.fr>
> To: synth-diy at dropmix.xs4all.nl
> Sent: Tue, 21 Feb 2012 10:21:09 -0500 (EST)
> Subject: Re: [sdiy] Using D-Sub connectors as patching elements
>
> On 2012-02-21 12:05 +0100, ChristianH wrote:
>> On Tue, 21 Feb 2012 10:45:01 +0000 Dave Kendall 
>> <davekendall at ntlworld.com> wrote:
>>> On Feb 21, 2012, at 07:13, Andre Majorel wrote:
>>>> I think I would give 8-way DINs a try
>>>
>>> Just looked at the datasheet for an 8-pin DIN free plug that digikey
>>> stock, and it's rated at 5000 cycles!
>
> What's the rating on the socket ? For DINs, the female part of
> the contact is the one whose mechanical properties (clearance
> and elasticity) are the most critical and simultaneously the one
> that is worked the hardest (flexion).
>
>> And you think that is much?
>>
>> Ok, this may be an academic calculation - but assume a dozen patch
>> changes a day, so after a year it's starting to have problems.
>> I wouldn't consider that good enough, not even for diy. Unless I know
>> it's going to be used significantly less - as they say, YMMV.
>
> It's a difficult problem. Round industrial connectors are
> prohibitively expensive and some patch points won't be used 5000
> times in your life time.
>
> Tiptop Audio use 8-way mini-DINs in their polyphonic modules. I
> expect they're even less reliable than regular DINs. It will be
> interesting to see how well they hold.
>
> -- 
> André Majorel http://www.teaser.fr/~amajorel/
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> -- 
> Harry Bissell & Nora Abdullah 4eva
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