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9
ProMix 4 Installation and Operation Manual
OPERATION
OPERATION
Operation of the ProMix 4 is simple and straightforward. Audio sources are mixed to the
Program output. The ProMix 4 output can be monitored via the monitor system and VU
meter. The console operator can also use headphones, plugged into any of the three ¼”
headphone jacks.
MICROPHONE INPUT CHANNELS
Microphone/line channels are turned on and off using the Microphone/line ON/OFF buttons
(4). When a microphone is ON, the “ON” LED (6) will be illuminated. The relative mix
level is determined by the rotary control (5). The “normal” position is at three o’clock posi-
tion, which yields 5dB of “in hand” gain when the rotary PGM pot is turn fully clockwise.
All microphone channels are programmed to mute the monitor system via configuration dip-
switch. Refer to the section 3.2 for microphone muting configuration.
LINE INPUT CHANNEL
Line channel four is turned on and off using the channel four ON/OFF buttons (4). When
the channel is ON, the “ON” LED (6) will be illuminated.
MONITOR SPEAKER LINE OUTPUT CONTROL
The ProMix 4 program output can be monitored via the Monitor Output. The Monitor out-
put volume is adjusted using the Monitor Out rotary control (16.) The (external) user sup-
plied monitor amplifier should be adjusted so that the Monitor Output produces adequate
volume with the Monitor Out rotary control is set to the twelve o’clock position.
HEADPHONE (HdPh) OUTPUTS CONTROLS
The console operator can monitor the console’s IFB/CUE and PROGRAM output via the
THREE HEADPHONE jacks on the rear panel (10). Headphones with impedances of 32
ohms or higher can be used. Do not use 8-ohm headphones. Each of the headphones chan-
nels are equipped with a CUE/IFB and Program pan pots, (8) which determines what is
heard through the headphones. The PGM pan pots adjust if the program audio is fed to
either the left, right or both ears. The same holds true for the PGM pan pot, which adjusts if
the Cue/IFB audio is fed to either the left, right or both ears. The headphone volume is
adjusted with the HdPh # controls (9).
PROGRAM LIMITER
The ProMix 4 is equipped with a soft program limiter, which may be defeated by disengag-
ing the “Limiter” push-button (10.) The “Limiter” LED will extinguish. The “CLIP” LED
next to the display will flash when the program audio is in a clipped condition.
PROGRAM OUTPUT CONTROL
The Program output level is adjusted using the Program Out rotary control (7.)
VU LED DISPLAY
The ProMix 4 features an accurate VU LED display (17) to monitor the main program out-
put level. Mix levels should be adjusted so most peaks read about 0 VU. The “CLIP” LED
next to the display will flash when the program audio is in a clipped condition. The LED
display is calibrated so that 0 VU 4dBu on the main program output. The VU LED
display may be calibrated using the trimmer accessible through the recessed front panel hole
just below the clip LED.
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