Robert Lawson wrote:
Geoff,
Yep, "we" did go through that a few years ago at length,
When I said "we", I was referring to John/BXO and I (as in replying to
his message). John, Otis, and someone else, forget now who it was...
Steve/K5LTK, perhaps, ordered some D-104 cartridges. In fact, I think
they were the JT-30 replacement crystal cartridges, which have a very
similar sound to them, if not a bit 'richer'.
With the right amount of EQ, any microphone can be made to sound -at
least- acceptable on the air.
John, in particular, came up with an RC network, incorporating some
inverse feed-back on a 12AX7 mic preamp that flattens out the audio
response on most any crystal element mic (like a D-104 or JT-30, etc...)
http://www.qsl.net/wa5bxo/xtal-mic-eq.gif
--
Driving your AM Rig without a scope,
is like driving your car at night, without headlights. (K4KYV)
--
73 = Best Regards,
-Geoff/W5OMR
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