G228 INSTRUCTIONS
V. INPUT CONNECTIONS
INPUT CONNECTIONS
Microphone:
The G228 volume control should be fully OFF (fully counterclockwise) when making any connection
to a microphone input. Any low impedance 150 to 600 ohm microphones may be used: Connect the
microphone cable shield to the ground screw terminal. Connect the two “hot” wires to the - and +
microphone input terminals on the G228.
IV. PRODUCT OVERVIEW
4 of 8
Grommes~Precision
Precision Electronics
847-599-1799
800-SINCE-46
FAX: 847-599-6178
1331 Estes Ave.
Gurnee, IL 60031
USA
www.grommesprecision.com
Grommes~Precision is an American manufacturer of original, custom, and private labeled audio/electronic equipment for use in commercial, consumer, and industrial applications since 1946.
Auxiliary:
The Input Impedance of each Auxiliary input is 10K ohms. Connect a CD player, radio tuner, or tape
deck to any Auxiliary input using and audio patch cable having standard RCA type phono plug at
each end. The Auxiliary input of each channel is internally mixed with the MIC input. If you have both
a microphone and an auxiliary signal source connected simultaneously to a channel and you want to
hear only the microphone, the microphone , the volume control on the auxiliary signal source must
be turned down. If you want to hear only the auxiliary signal source, then the microphone’s on-off
switch (located on the microphone body) may need to be switched off.
MAIN
TAPE
MIX
