Hi, I've been lurking here for over a year just absorbing info, for which
I am quite appreciative having learned a lot. I have been playing
amplifed at home through my home theater system using a mixing board to
get everything I want to go smoothly through that system. However, now I
have acquired some tube amps and have a selection of mics and need a
little info if possible. Since I'm just getting into the variations on
amplified playing, could anyone set me straight on the ins and outs of
impedance matching, what are considered Hi and low Z ranges, etc.
Specifically, I have a tube amp that does not say what the input
impedance is. The schematic shows a 63K resistor between the input jack
and the amplifier circuits. Would this be the input impedance rating? If
not, how do you determine this value? There is also a 1M resistor between
the input jack and a ground. Next question is, if I have a high impedance
mic, say 1 M ohm, what kind of impedance is needed at the amp to properly
match to that? If someone can give me some advice on what is
good-better-best in terms of Z matching or what is inadvisable with
respect to Z matching I would be grateful. If you could also tune me in
to the Z matching devices and how they should be set up that would also
be helpful. I don't really understand the pros and cons of it so any info
would be of benefit.
Cheers.
Jon
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