[sdiy] 0.141" vs 0.125" jacks (was: 1/8" jack recommendations)

[Graham Atkins]

Hi Chris,

Just watching this thread with interest. I notice that people in the  
US seem to
still have problems relating inches and centimetres....which is not  
surprising
as America has retained it's imperial measurement system. In the UK we  
have
the benefit of growing up with both which makes life a bit easier.

With regard to jacks, I am fairly sure that the 1/4" jack has it's  
origins in telephony
from a time when we were all using imperial measurements. Tiny-Jax  
were made
to allow for greater packing density. I would bet the origins of the  
3.5mm & 2.5mm
jacks were probably be in Japan. Certainly my introduction to them was  
for things
like earphone / headphone jacks on transistor radios. The 3 and 4  
circuit variants
have just evolved from there.

Not everyone wanted to follow that path, for example Germany developed  
the
well known DIN plug. France the SCART connector etc...and so on. The  
humble
1/4" jack must be the great grandfather of them all.

Graham

On 2 Jul 2009, at 10:07, Chris Muir wrote:

>
> On Jul 1, 2009, at 5:31 PM, flightofharmony wrote:
>
>> Also, as far as I have seen, 1/8" jackls/plugs do not exist. At  
>> all, ever. I
>> have yet to find any proof of them ever being manufactured. Has  
>> anybody else
>> ever found some?
>
>
> No. My theory is that because the Tini-Jax were about half the size  
> of 1/4" with the same general look, they were just called 1/8". I've  
> seen no evidence that Switchcraft ever called them 1/8". Plus... no  
> one likes to say (or spell) Tini-Jax :-)
>
> - C
>
> Chris Muir
> cbm at well.com	
> http://www.xfade.com
>
>
>
>
>
>
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