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Page 14 Installation and Operating Guide English
Installation and Operating Guide pro.Bose.com
Hardware Installation
Unpacking
The product carton includes the following items:
Figure 3. Carton contents
PowerMatch
®
amplifier Installation and Operating Guide Detachable IEC power
cord
Connector Accessory Pack (contents vary according to model number):
PowerMatch models
Input
connectors
Output
connectors
Shorting
jumpers
Fault
connector
Plastic wire
tie-wraps Accessory Kit PN
PM8500, PM8500N
8 2 4 1 9 343511-0010
PM8250, PM8250N
PM4500, PM4500N
4 1 2 1 5 343511-0020
PM4250, PM4250N
Rack Mounting
PowerMatch amplifiers are designed to fit standard 19-inch (48 cm) rack equipment, occupying 2 rack-units (RU) in height, requiring a
mounting depth of 21 inches (53 cm) from the front rack rail. Use four fasteners with washers (not supplied) to mount the amplifier front
panel rack ears to the equipment rack rails. Rack-mount tabs are also provided on the rear of the chassis to secure the amplifier using
rear rack mount ears (not provided). Rear rack mounting is recommended in cases when pre-assembled racks with amplifiers are trans-
ported to installation venues.
Ventilation
PowerMatch amplifiers are designed to operate under a wide range of conditions, with continuous operation up to 104° F (40° C)
ambient temperature. To ensure safe operation, the front and rear airflow vents should never be blocked. Air flows into the front of the
unit and exits the rear vents. The internal fans automatically increase speed when the amplifier is generating more heat. Should the unit
exceed safe operating temperature, a gradual reduction of gain will automatically be applied for thermal protection. If the automatic
gain reduction does not reduce operating temperatures to safe conditions, the unit will mute all outputs and the red FAULT LED will
illuminate on the front panel.
AC Mains Outlet Requirements
PowerMatch amplifiers feature an efficient, universal switch-mode power supply with fast-tracking Power Factor Correction (PFC)
and can operate with AC mains line voltages from 100 to 240 volts at 50/60 Hz. With typical music program material, amplifier model
PM8500 provides full rated power from a single 20-amp, 120V (common in USA) AC mains outlet, or single 16-amp, 230V (common
in Europe) mains outlet. The mains circuit requirement for models PM8250, PM4500, and PM4250 is lesser, as full rated power can be
achieved using a 15-amp, 120V (USA) AC mains outlet or a 10-amp, 230V (Europe) AC mains outlet.
High-power amplifiers draw large amounts of current from the AC mains. Use of extension cords to power the amplifier could introduce
significant impedance and a resulting voltage drop on the mains that may interfere with normal operation of the amplifier.
In countries like Japan where 100V AC mains are used, the following guidelines will be helpful to ensure optimal performance:
• Ensure a minimum of 100V AC at the amplifier plug when the amplifier is idle.
• Use a dedicated mains circuit for each amplifier.
• Locate the amplifiers as close as possible to the mains outlet.
• If used, extension cords should be 14 AWG (2 mm
2
) or larger, and less than 6.6 ft (2 m) in length.
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