Sound Performance Lab Area 5.1 - Manual (Page 4)

4
Area 5.1
The Area 5.1 unit should not be installed near units which
produce strong magnetic fields or extreme heat. Do not install
the unit directly above or below power amplifiers. Generally
choose a place with sufficient air circulation.
The mic array has to be placed the way that the LCR heads
(those closer to the microphone center/90° angle) are facing the
sound source. Be aware that placing the mic array close to the
ground may result in ground reflections and comb filtering
effects. The best horizontal position for the mic array is right on
the crossing between the direct sound field and the diffuse sound
field.
BEFORE switching on power, make sure that the microphones
are connected with the Area 5.1 unit. (optional multicore lead
recommended). Check that the voltage details quoted on the
back panel are the same as your local mains electricity supply. Use
a minus (-) screwdriver to set the voltage selector to the required
voltage.
NOW switch on the Area 5.1. Chassis ground and AC ground can
be disconnected by the “Ground Lift” switch (GND LIFT) on the
back panel, if hum problems occur. An AC power cord is included
to feed the IEC-spec, 3-prong connector.
After switching on the Area 5.1, proceed as follows:
1) Press the Ch. 1-4 Lock button of channel 5.
2) Turn the Mic Gain control of channel 5 clockwise until sufficient
recording level is indicated at the PPM output meters (all other
mic gain controls follow precisely)
Installation
Standard Recording
Setup
Connect all devices BEFORE
switching on the Area 5.1
See chapter Operation/Monitoring,
page 8, for further information on
stereo headphone monitoring