[Harp-L] Re: high impedence input (was Re : controlled magnetic mic elements )

[Marion.Spiers@xxxxxxxxxxxx]

In a message dated 8/24/04 6:24:52 PM Eastern Daylight Time, kcmojo 
writes:
"A crystal element works a lot better with a 5 meg input than the typical 
guitar amp 
circuit input of 1 meg. There is a resistor inside the amp, sometimes 
right on the input jack, that accomplishes this. For a few pennies and 
less time than it's taking me to write this you can make a crystal mic 
sound like it's supposed to (provided you have a good element to start 
with)."
 
Ron asks:

" Are u talking of an amp modification, changing a resistor?  I don't 
understand what you're saying here - how is it that we can "make a crystal 
mic sound 
like it's supposed to", so easily and quickly?"

Ron, yes it's an amp mod, but just as easily reversible if that's a 
concern. However, if you don't understand such things, DO NOT open your 
amp up. There are lethal voltages hanging out in there looking for 
somewhere to go. Better to pay someone else for their time and knowledge. 
It will be well worth the small cost when you hear the difference it makes 
with the crystal mic. 

The answer to your question though, is this easy: you unsolder the 1meg 
resistor(typically) and install a 5meg resistor. Or make input #2 the harp 
input and leave #1 for your guitar. 

Harp content:  Your mic/amp combo, when set up properly, will sound better 
and respond to your playing dynamics, which in turn will inspire you to 
play better, and work that mic as part of your instrument.


kcmojo