Roger.Norwood wrote:
> I think I must have been asleep! Just when did the quarter-inch jack
> become the 7mm phone jack?
> I used to use quarter-inch tape in the past, discussions of which
> have appeared in this group frequently but nobody refers to it as
> 7mm tape do they?
First I've heard of it. Actually 6.3mm, same as the NATO ammunition.
> I know when the mini-jack arrived it was known as the 3.5mm jack, as
> it didn't quite measure/8th inch, but presumably the inventor/
> developer decided to design it from a metric beginning.
The 1/8" mini-phone (American) morphed into the 3.5mm stereo mini-
phone (Japanese).
> The quarter-inch jack was originated in imperial, not metric
> measurements and I can only ever call it a quarter-inch or mono jack
> and refer to the stereo version as balanced or TRS depending on its
> use or context. Perhaps it measures 7mm but its not how I see it.
Agreed. "Quarter-inch phone" or "quarter-inch TRS" is the accepted
professional description. TRS alone may be insufficient as the smaller
"bantam" jacks are popular in studio patch bays and are used for
inserts on Sonosax field mixers.
-Dan Dugan
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