[microsound] Sure WL-183 redux

[Kim Cascone <kim@xxxxxxxxxxxxxxxxx>]

> WL-183 Shures which run $190 a pair.
> http://www.sweetwater.com/store/detail/WL183/

I was intrigued with these mics so I read the spec sheet and found a  
slight problem with using these Sure's with plug-in power devices:
the standard 'plug-in power' device works by supplying +Vdc to an  
electret element via a pull-up resistor which is then blocked with a  
capacitor through which audio passes to the outside world i.e.,  
preamp, HiMD, etc...in effect the audio rides on top of a ~+9v DC  
level which is then removed by means of a capacitor...
the Sure WL-183 does things a little differently: the mic is  
terminated in a TA4F four-pin connector and set up so that pin 2  
supplies power to the electret condenser element while pins 3&4 are  
jumpered and carry the audio...so the power and audio are kept  
separate and assigned their own pins...
in short, one would have to make extensive mod's to an existing 'plug- 
in power' device in order to use these Sure's...


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