[Boatanchors] question

[bonddaleena at aol.com]

Hi. It's time for "Ron's dumb question of the week"......

I notice that on ePay, there are a lot of Krohn-Hite 'Band Pass 
Filters', at some pretty good prices (I suppose).  I have a K-H 
function generator and it is VERY well made and $.
How would one of these filters work as an audio filter??
Some have the ability to do both high pass and low pass at the same 
time, others let you choose one or the other. I have quite a few audio 
filters here, but thought that one of these K-H filters configured to 
cut off below, say, 700 Hz and above 750 Hz would make a heck of an 
audio filter for CW.

Or would it?? It seems that can function from just a couple of Hz up to 
waaay beyond our hearing limit..

thanks!!!!

ron
N4UE