Operotion
1. Position the microphones and connect them to the D. TEMP WARNING-Check for air blockage,
PRO MASTER'" Use both inputs on each channel ~f dirty air filter, shorted speaker cable or excessive
more than SIX microphones are to be connected. heat near the console.
Use low-impedance microphones cables and to
minimize loss and interference if long microphone E. SHUTDOWN-Check for excessive console
heating or cooling fan failure.
cable lengths are needed.
2. Position the speakers and connect them to the PRO
MASTER. Make sure the combined speaker load is Mointenonce
not less than ohms. 4 Use minimum cable lengths to
maximize output power. Use the proper cable size The PRO MASTER is an exceptionally
for the required length. well-designed unit. All components are of the
highest quality, operating well within their
3. Make any rear-panel patching connections respective ratings to assure long life. The fol-
required (refer to SETUPS section). All patching lowing list of Do's and Don'ts describes mini-
connections except the MIC OUTPUTare standard mal operating precautions and maintenance to
two-conductor, %-inch phone jacks.
provide years of dependable service.
4. Connect any external effects device to the PRO
MASTER EFFECTS OUTPUT and AUX INPUT
jacks. Power for the external effects device can be DO clean the air filter every 100 hours of
obtained from the PRO MASTER rear-panel operation (more frequently in dusty or dirty
UNSWITCHED AC receptacle (1 00 watts areas). Stand the console on its rear bump-
maximum). ers, remove the screw securing the filter, and
5. Connect the PRO MASTER line cord to an ac source slide it out of its slot. Rinse the filter in or water
a mild detergent solution, allow to dry, and
capable of supplying 500 watts. If extension cords replace.
are required, make sure they are 18 AWG or larger.
6. Make sure the PRO MASTER air louvers are not DO unplug the console before cleaning. DO
blocked. Check to make sure the air filter is clean clean the outer surfaces of the console with a
clean, damp cloth and mild detergent. DON'T
7. In low ambient light conditions, a high-intensity, use strong solvents or cleaning fluids.
low-wattage lamp (not supplied) can be plugged
into the rear-panel UNSWITCHED AC receptacle
DO use an 18 AWG or larger heavy-duty
(1 00 watts maximum). extension cord when additional line cord
8. If des~red, the supplied Instruction Plate can be length is needed.
mounted on the PRO MASTER front panel above
the DB PEAK indicators. IMPORTANT The Instruc- DON'T operate the console with air louvers
tion Plate adhes~ve backing is designed for perma- blocked, or placed on a radiator or heat-
nent mounting; for temporary mounting, leave the producing equipment. Avoid operation in
paper backing in place and use double-sided tape. direct, hot sunlight.
9. Set the front-panel controls their to initial settings DON'T replace the rear-panel fuse with a
(orange marks). Set the INPUT ATTEN controls for
different size or type. Use only 4A, SLO-BLO,
the usage on each input. Turn on the rear-panel 250V, type 3AG.
power ON-OFF switch.
10. Adjust the MASTER VOLUME control to the desired DON'T risk fire or shock hazard by operating
level. Using program material similar to the actual the console in rain.
performance, adjust the MONITOR, EFFECTS1
DON'T use unbalanced low-impedance
REVERB and EQ controls as desired for the most
pleasing sound. microphones with the SIMPLEX 24V switch
on; turn off the switch if not required for power-
11. Using the FEEDBACK FINDER" set the equalizer ing condenser microphones. If simplex
for the highest feedback-free sound level. The power is in use, connect unbalanced low-
equalizer controls can then be "touched up" for
impedance microphones through line a
most pleasing sound. matching transformer (Shure A95UF)
12. During operation, observe the various LED to a HI IMP INPUT:
indicators for possible setting corrections:
A. INPUT CLIP-If on constantly, use the INPUT
ATTEN to reduce the input signal and eliminate Troubleshooting
the distortion. (Set for occasional flashing.)
Should any difficulty be encountered in
B. DB PEAK-Observe action to monitor output console operation, the problem can often be
power level.
traced to some simple source such as an error
C. PA OVERLOAD-If on constantly, reduce in interconnection. The.following is offered as a
14 volume andlor check speaker load. basic guide to this type of problem. |
ACEC
SHURE
