Re: Assisted Listening systems.

And it came to pass that Frank Wood wrote:

>>I was doing a turn FOH last night and took a good look at
>>the IR transmitters.  Green LED top left corner and two
>>vertical strips either side of centre glowing a very dull
>>red.  Barely noticable with the house up and faint but
>>obvious under blackout.  Last night I was working at the
>>rear of the house - normally I'm right down at the front
>>where obviously the transmitters appear brighter.
> 
> I stand by what I have said: the visible output from these
> is outside the normal visible spectrum.
> 

The output, sure.  But the source is quite within the visile 
range, however.  When the emitters are active, they glow visibly  
red.  DIM, but visible.



-- 
:-)         Christopher Jahn
:-(                

http://mywebpage.netscape.com/xjahn/Main.html

Well, Katrina likes it.