Input connection, Microphones, Mic-1, mic-2, mic-3, and mic-4 – Aiphone PM-30 User Manual
Page 6: Balanced low impedance microphone, Unbalanced low impedance mircrophone
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Turn BASS control knob and TREBLE control knob respectively, clockwise to raise
tone level by approximate +10dB, turn counter-clockwise to lower tone level by
approximate -lOdB.
7.
INPUT CONNECTION:
Microphones
Four microphone inputs are provided. They may be used with balanced or unbalanced
high impedance (50K ohm) or Low impedance (600 ohm) microphone. A microphone
with an unbalanced connection cable of 30' to 60' (10-20m.) may be used, but it
depends on the microphone and its characteristic..
Mic-1, Mic-2, Mic-3, and Mic-4
Mic-1 is unbalanced-High impedance and is provided with a double pole phone jack
located on the front panel.
Mic-2 is balanced Low impedance, and Mic-3, and 4 are unbalanced-Low Impedance,
and are located on the rear panel.
Balanced Low Impedance Microphone
Connect to the double conductor shielded cable.
to Mic 2 Input Terminal
Balanced microiphone
=
Unbalanced High Impedance Microphone
May also be connected to the single conductor shielded cable of unbalanced high
impedance microphone.
unbalanced Microphone
a
Single pole phone plug
to Mic 1 Phone Jack
Unbalanced Low Impedance Mircrophone
to Mic 3 or Mic 4
Phone Jack
unbalanced Microphone
Phonograph
Connect ceramic or crystal cartridge pick-up to Phono input (55mV SOOKohm).
Use a single-conductor or double-conductor shielded cable.
L to PHONO Input Terminal
of Amplifier
Connect to the GNDC^)
terminal of the amplifier.