WARNING
• TO PREVENT FIRE OR SHOCK HAZARD, DO NOT USE THIS PLUG WITH AN EXTENSION
CORD, RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO
PREVENT BLADE EXPOSURE.
• TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOISTURE.
• TO PREVENT ELECTRICAL SHOCK, MATCH WIDE BLADE PLUG TO WIDE SLOT, FULLY IN-
SERT.
This lighting flash with arrowhead
symbol, within an equilateral triangle,
is intended to alert the use to the pres-
ence of un-insulated dangerous voltage
within the products enclosure that may
be of sufficient magnitude to constitute
a risk of electric shock to persons.
The exclamation point within the
equilateral triangle is intended to alert
the user to the presence of important
operating and maintenance (servicing)
instructions in the literature
accompanying suppliance.
This lighting flash with arrowhead
symbol, within an equilateral triangle,
is intended to alert the use to the pres-
ence of un-insulated dangerous voltage
within the products enclosure that may
be of sufficient magnitude to constitute
a risk of electric shock to persons.
IMPORTANT SAFTEY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3 Read all warnings.
4 Follow all Instruction.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturers instructions.
8. Do not install near heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that
poduce heat.
9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one
wider than the other. A grounding type plug has two blades and a third grounding prong. If the provided plugs does not
fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at the plugs, convenience receptacles, and at
the point where they exit form the appliance.
11. Only use attachments or accessories specified by the manufacturer.
12. Unplug the apparatus during lightning storms or when unused for long periods of time.
13. Refer all servicing to qualified personnel. Servicing is required when the apparatus has been damaged in anyway,
such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the
apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
Introduction
The OSD Audio MX Series Multi-Zone Amplifiers are ideal for adding additional power in distributed audio applications or
combining with home theater systems. The MX880 provides 8 channels, MX1280 provides 12 channels and MX1680
provides 16 channels of digital amplification. All MX Series models incorporate features such as bridge mode operation,
global and independent zone triggering, audio sense circuitry with delay time per zone, two Bus Inputs/Outputs and
independent line inputs per zone to meet the wide range of audio applications and projects. All MX Series amplifiers are rated
at 50 watts per channel into 8 ohms and 80 watts per channel into 4 ohms. With the Stereo/Bridge switch in Bridge mode,
each zone of channels are combined for a higher powered mono output of 160 watts into 8 ohms. With high performance
and ultra-low distortion output, the MX series Multi-Zone Amplifiers provide unmatched sound quality for any audio system.
Thermal Protection
All MX series amplifiers are designed with special circuitry to safeguard the amplifier under a thermal overload
condition. Thermal protection mode will only engage when the unit has been run at high volume for extended periods of time
without adequate ventilation and/or when speaker impedances are below the minimum levels for the amplifier. In thermal
protection mode the amplifier will automatically stop output. If this fault occurs, turn off the amplifier, and check that the
speaker impedance rating is above the minimum rating. Also check for adequate ventilation around the amplifier and make
adjustments if necessary. Once the unit has cooled to sage operating temperatures, the amplifier may be powered back on.
Protection Circuitry
Special circuitry has been designed into the MX Series Multi-Zone Amplifier to safeguard under a short-circuit condition.
A faulty speaker can also cause a short circuit condition. The Zone LED indicator will blink rapidly between red and blue.
If this fault condition occurs, turn off the amplifier and check speakers for short circuit conditions when appropriate.
Installation
The MX Series Multi-Zone Amplifiers can be placed on a shelf, as part of an equipment rack, or on a table or cabinet.
During installation, keep in mind that the amplifers require proper clearances for ventilation and heat dissipation.
The amplifier will take two rack spaces with the feet removed.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
MX SERIES MULTI ZONE AMPLIFIER OWNER’S MANUAL
