I'm trying to help out my local Middle School. They inherited eight Nady
Platinum series 802 UHF wireless microphones from the High School. They
were purchased in 1998. While they are getting a little old, they really
only get used for about 10 perfoamnces and 10 rehearsals a year, so they
haven't seen much use. I don't think they're worth much and the school
has
little or no money to repair or replace them. That's why I'm trying to
help
them.
I work with a local community theatre and the High School also, primarily
with lighting their plays. Since I can at least spell "audio", I'm as
close
to an "expert" as they've got. (So, boy are they in trouble!) I hardly
even know enough about microphones to consier myself dangerous. So please
excuse my ignorance.
I was able to get one transmtter/receiver pair working well enough to go
through all the microphone cables and make sure there were no broken
wires,
a common problem with these things. I did quite a bit of re-soldering and
even replaced a few connectors.
The problem now is that most of them still don't work. There are only two
adjustments that I can find that are labeled and I'm willing to "play"
with,
the "gain" in the transmitter and the "sensitivity" in the receiver.
I started by setting them as the manual says they should have been from
the
factory: gain set about mid point and sensitivity turned all the way down.
With the sensitivity set low, no amount of gain gets me a signal to the
amp.
If I turn the sensitivity up, at some point it jumps from no signal to a
constant screech. Feedback? I suppose.
Sometimes I can get the sensitivity set right at the border between
nothing
and screech. Then the signal cuts in and out.
Since several are doing the same thing, I'm thinking it's some adjustment
that I don't know about. Anybody have any suggestions or steps I should
follow to help me resolve this? Otherwise they'll probably just toss them
out.
Thanks,
Larry Pint
New Prague, MN USA
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