www.cleveracoustics.co.uk
ZM 107 Audio Mixer
User Manual
7
Operating instructions
rear panel AUX 2 sockets are connected in parallel and cannot be used simultaneously.
18. CH1-5 inputs:
Balanced mic/line inputs equipped with combo XLR / 6.35 mm Jack sockets.
19. LINE/MIC/PHANTOM switches:
Use these switches to set what type of audio source is connected to each MIC/LINE input: a
microphone without phantom power (MIC), a microphone with +15V of phantom power (PH), or a line-
level device (LINE).
Note: Most dynamic microphones do not require phantom power, while most condenser microphones
do. Consult your microphones documentation to find out whether it requires phantom power.
20. CH1 priority potentiometer:
MIC CH1 would have priority over other input channels. This function can be disabled by adjusting
the MIC priority knob at the back of the unit. When the knob is turned ant-clockwise to the leftmost
position, a signal received by the CH1 MIC/LINE input will not affect the other input signals at all.
Turning the knob from the leftmost position towards the right position will gradually have the CH1 MIC/
LINE input volume have priority over all other input signals. When the knob is turned to the rightmost
position, a signal received by the CH1 MIC/LINE input will mute all other input signals entirely.
Power on/off procedure:
Prior to making any connection to the mains power or audio inputs/outputs, turn all level controls
counter clockwise to the
“0”
position and all tone (equaliser) controls to the mid (zero) point. Deselect
all monitor and zone selection controls.
Switch on the zone mixer and any audio sources (MP3 players, CD players, Microphones etc) before
powering the systems amplifier ON. The last product to be switched on should be the power/slave
amplifiers to prevent any unwanted noise or potential damage to speakers or amplifiers. If you wish
to power off the system, turn the amplifier’s master volume control counter clockwise to the
“0”
position before switching the amplifier OFF before any audio sources are switched off. By following this
procedure it will prevent acoustic shocks to the speakers or potential damage to system components.
After connecting all audio sources and powering on the system, adjust the level of each audio input,
select the zone routing in order to achieve the desired “mix” for each zone. Care should be taken
to when adjusting microphone input volumes and the master volume, adjust both of these in small
increment’s to avoid feedback (howl around). The goal is to achieve a clear balance between music
and voice ensuring announcements can be clearly heard.
