|[AMRadio] Microphone assistance|
John E. Coleman (ARS WA5BXO)
wa5bxo2006 at pctechref.com
Thu Aug 31 17:40:51 EDT 2006
You are correct Mike,
One way to help with the cable capacitance trouble, if a XFMR is to
be used to step up the voltage, is to put the XRMR close the input circuit
or preferably in the speech amp chassis and incorporate a 3 pin XLR
connector. Run balanced low Z from the microphone to the XLR input and
using the shield of the cable for just a shield and not common the audio of
the microphone. The mixer is a good plan if available and may have other
uses. Mine also has compression using a Light Dependent Resistance device
to regulate the audio level.
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