Congratulations on purchasing this 4-Zone amplifier. It is housed
in a heavy duty 3RU rack mount cabinet and includes a host of
features. It provides an economical solution for smaller
installations including offices, workshops, smaller shopping
arcades, schools etc.
FEATURES
VERSATILE INPUTS
Channel 1 is a front panel mounted 6.35mm phone jack that
accepts either an unbalanced or balanced (tip / ring / sleeve)
microphone. Channels 2-3 comprise balanced XLR inputs via
the rear panel, with mic / line sensitivity adjustment provided, as
well as a switch to provide phantom power for condenser mic
inputs. Channel 4 has a switch to select between balanced XLR
or a pair of RCA line level inputs. Channel 5 comprises a pair of
RCA inputs, switch selectable between line or phono level.
TELEPHONE INPUT
A telephone paging and music-on-hold input connection is
provided via spring terminals on the rear panel. Music sources
can be from a choice of optional modules that are installed into
the front panel slot.
SLOT FOR OPTIONAL INPUT MODULES
A slot in the front panel is provided in order to fit one of the
following optional modules: A 4344A (TP-100RDS) AM/FM RDS
Radio tuner module, A 4346 (CDR-100RDSU) CD/tuner module
with USB.
PRIORITY MUTING
MIC 1, CHIME and SIREN have priority over other inputs. The
muting level can be adjusted via a knob on rear panel.
REMOTE CHIME AND SIREN
This is operated by buttons on the front panel which play various
tones across the speakers. When the spring terminal on the rear
panel is shorted, CHIME is activated.
FOUR ZONES SPEAKER SELECTOR
Any combination of mono speakers (4 or 8ohm) can be selected
via front panel selector switches.
PRE OUT
A preamp output socket is provided enabling connection to extra
slave amplifiers or a signal processor.
24V EMERGENCY OPERATION
The unit will operate from 24V batteries for use in emergency
applications. Screw terminals provided on the rear.
AMP SECTION
• Automatic variable speed fan
• Over current protection
• Load short circuit protection
• Built-in low pass filter circuit
• Output level LED VU meter
SAFETY INSTRUCTIONS
• Please read these instructions before use. DO NOT switch on
the mains power until installation is complete.
• Locate the device away from any heat source, such as
radiators, heating vents or in direct sunlight etc.
• DO NOT install in a confined space such as a cupboard or
book case. Ensure adequate ventilation of the unit.
• DO NOT expose to any form of liquid.
• DO NOT drop any foreign object or liquid inside the amplifier.
• This device should be serviced by a qualified service person.
IN THE BOX
• JD-MEDIA PA Mixer Console
• Power Cord
• Rack Mounting Brackets, Screws And Washers
• Operation manual
OPTIONAL ACCESSORIES
• A 4346 (CDR-100RDSU)
CD Player / AM/FM Radio Tuner
module with FM RDS / USB
• A 4344A (TP-100RDS)
AM/FM Radio Tuner module with
FM RDS
Note:
The three modules listed above fit into the slot on the
PA mixer front panel. Each module includes the antenna
terminal, which fits into the PA amplifier rear panel.
• C 0377
PUSH-TO-TALK Paging Mic which connects using
only a 3-Pin XLR Jack.
Note:
These are the accessories which are supported for this
product in Australia, and which have descriptions within this
manual, as well as having their own manuals.
INSTALLATION
MOUNTING
These amplifiers are designed to fit into standard 19” racking
space, and include the left and right mounting brackets in the
box.
COOLING
When installing in a rack frame, never block the air vents on the
side, and make sure there is enough space (44mm) on either
side of the amplifier to allow air flow. Check the temperature
inside the rack system to ensure it is not above 40 degrees
Celsius. A cooling fan on the rear rack panel is recommended.
JDM
®
4 Zone Public Address Amplifiers
2