Version 2 - 9 January 2008
Page 7 of 10
© Prime Audio - PO Box 353, Kerrimuir VIC 3129, Australia - Ph.03 9383 1399 – www.primeaudio.com.au
General Installation
DO NOT run microphone cables near mains, data, telephone or 100V line cables.
DO NOT run 100V line cable near data, telephone or other low voltage cables.
DO NOT exceed 90% of the amplifiers output power when using 100V line (speech
only).
DO NOT exceed 70% of the amplifiers output power when using 100V line (high
level background music).
DO NOT use re-entrant horn loudspeakers for background music unless the loudspeaker has been
specifically designed for this purpose.
AVOID
jointing the microphone cable, when this is unavoidable make sure a good screened connector is
used.
ALWAYS use a unbalanced or floating low impedance microphone terminating into a unbalanced input on
long microphone cable runs.
ALWAYS use a mains grade double insulated cable for the loudspeaker cable runs.
ENSURE that all loudspeakers are in-phase.
ENSURE that there are no short circuits on the loudspeaker line before connecting to the amplifier.
Front Panel Control
1.
Power Switch
– for normal use this control should be on. It is suggested that the power switch be turned off for
weekends or holiday breaks.
2.
Channel Volume Controls Nos 1-5
– these level controls provide volume adjustment out over the speakers of the
various input services that may be connected to the Amplifier. These may be microphone, cassette, CD etc.
3.
Treble Control
– adjusts higher frequency response of the amplifier.
4.
Bass Control
– adjusts the lower frequency response of the amplifier. These controls are usually set midway.
5.
Chime
– “Pre-announcement” chime to call attention that an announcement is about to be made. This function
may be set to operate automatically when connected to a suitable microphone via connections on the rear panel.
6.
Bell Switch
– pressing this button will generate an electronic bell sound for as long as the button is depressed.
The feature may be activated by time clock or other means via the rear panel terminals. The primary function of
the bell is to signify starts or ends of particular periods of time eg. lunch breaks, school classroom periods etc.
7.
Alert Switch
– the alert switch generates an emergency alert electrical tone. This tone is to Australian Standard.
Its purpose is to call attention to a possible emergency and for those in the building or area to cease activities and
remain quietly for further instructions.
8.
Evacuation Switch (EVAC)
– this switch will general an electronic emergency evacuation tone to Australian
Standard. This tone is used to call attention for the immediate and orderly evacuation of the building to a
pre-determined evacuation plan.
9.
Green – Red L E D
– this row of lights starting from left to right, green to red shows at what level the amplifier is
operating. The normal operation levels for any source should be in the green areas, with the occasional peak into
red. Continuous operation in the red will overdrive the amplifier and may cause damage and distortion of sound.
