[sdiy] Using D-Sub connectors as patching elements

[Oren Leavitt]

On 2/22/2012 4:33 PM, Dave Kendall wrote:
>
> 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
>
>

Speaking of D-Subs as patch connections. I have been entertaining the 
idea of using 9 pin D-Subs in an 8 voice patchable polysynth. Each pin 
routing signal/CV for single voice.
Maybe 8 ASM-1 type synths.

- Oren

>>
>> ----- 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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