Bose PowerMatch PM8250N

The Bose® PowerMatch PM8250 configurable professional power amplifier provides concert-quality sound with a high level of scalability and configurability for fixed installation sound reinforcement systems. Ethernet-equipped versions enable network configuration, control and monitoring, and an expansion slot supports input from optional digital audio accessory cards. PowerMatch amplifiers utilize numerous Bose technologies to deliver an unprecedented combination of performance, efficiency and ease of installation-all in a reliable, proprietary design.


Key Features

QuadBridge™ Technology - Allows each 4-channel loudspeaker block to be configured as Mono, V-Bridge, I-Share or Quad modes, allowing the total available power of the amplifier block to be allocated to one or more output channels. V-Bridge and Quad modes can drive either low impedance or 70/100V loads.

Bose® ControlSpace® Designer™ software - PowerMatch amplifiers can be fully configured using ControlSpace Designer software via the onboard front panel USB connection, or the rear panel Ethernet connection (network models only). Using ControlSpace Designer software you can access additional features including: Parametric EQ stages, load sweep of each output channel and auto standby. ControlSpace Designer software is also used to integrate network model PowerMatch amplifiers into larger control and monitoring systems comprised of Bose ESP processors and CC control centers.

Auto-Standby/Auto-Wake function - When enabled, this function automatically enters/exits Standby Mode, allowing the system to consume less power.

Dual voltage and current feedback loop - Proprietary design combines Class-D efficiency with a unique current and voltage feedback loop circuit that continuously monitors and controls both the current and voltage delivered to the loudspeaker load. Independent of power level and load impedance, the amplifier consistently delivers the widest possible dynamic range, frequency response and lowest possible distortion.

PeakBank™ power supply - Regenerative 4-quadrant power supply enables higher power density while allowing the re-use of energy from reactive loads that is normally wasted in conventional Class-D designs. This highly efficient amplifier design delivers sustainable and repeatable low frequency response.

Fast-tracking power factor correction (PFC) - Efficiently manages the current drawn from the AC mains, allowing the amplifier to drive loudspeakers to maximum output longer without power fluctuation. PFC provides superior transient response and functions at peak burst power much longer than conventional Class-D amplifier designs to satisfy the requirements of even the most demanding program material.


Physical

Dimensions
3.5" H x 19" W x 20.7" D (88 mm x 483 mm x 525 mm)- 2 rack space

Net Weight
28.3 lb (12.8 kg)


Technical Summary

Maximum Rated Power
2000 W (250 W x 8 channels at 4 ohms)

Input Channels
8 (balanced line level)

Output Channels
2 to 8 (configurable)


Applications

Houses of worship
Retail stores
Atriums and malls
label_application_restaurants
Auxiliary zones
Conference centers
Hospitality venues


Specifications
Power Rating
THD for Power Rating, Typical
2 Ω 4 Ω 8 Ω 70 V 100 V

< 0.1 % < 0.1 % < 0.1 % 1 % 1 %
Mono Mode
250 W 250 W 250 W Not available3 Not available3
V-Bridge Mode
250 W2 500 W 500 W 400 W 500 W
I-Share Mode
500 W 250 W2 150 W2 Not available Not available
Quad Mode
1000 W2 1000 W 500 W2 800 W 1000 W
Maximum Rated Power 2000 W (250 W x 8 channels at 4 ohms)
Peak Output Voltage 71 / 142 V (Mono / V-Bridge, I-Share, and Quad modes)
Voltage Gain 30 / 33 / 30 / 33 dB (Mono / V-Bridge / I-Share / Quad modes)
Audio Performance Specifications
Frequency Response 20 Hz - 20 kHz (at 1 W and +/- 0.5 dB)
Signal-to-Noise Ratio, Analog Input >99 dBA (1 dB below rated power, A-weighted)
THD < 0.4 % (at 1 W, 20 Hz to 20 kHz)
Intermod Distortion - SMPTE < 0.4 % (60 Hz, 7 kHz)
Channel Separation (Crosstalk) > 65 dB (adjacent channels, at 1 kHz)
Damping Factor > 1000 (10-1000 Hz, 4 ohms, at amplifier output)
Integrated DSP
A/D and D/A Converters 48 kHz / 24-bit
Total Latency (Analog In - Amp Out) < 0.95 ms
Input to Output Signal Routing 8 x 8 matrix
Loudspeaker Presets Bose Professional
Input EQ 5-band PEQ (+/- 20 dB), notch, shelving, high pass, low pass
Bandpass Filters (Crossover) Butterworth, Bessel, or Linkwitz-Riley, up to 48 dB/octave
Loudspeaker EQ 9-band PEQ (+/- 20 dB), shelving, high pass, low pass
Array EQ Filters 2-band RoomMatch® array EQ
Maximum Output Delay 3 s
Output Limiter Peak and RMS voltage
Audio Inputs
Input Channels
Analog Digital (Optional Card)

8 (balanced line level) 8
Input Impedance
> 100 kΩ N/A
Sensitivity
0, +4, +12, +24 dBu, selectable Digital: 0, -12, -20, -24 dBFS, selectable
Maximum Input Level
+24 dBu (at 24 dBu sensitivity setting) N/A
Connectors, Input
3-pin Phoenix Contact® (green color; part # 1776168) Card Dependent
Audio Outputs
Output Channels 2 to 8 (configurable)
Connectors, Output 8-pin Phoenix Contact® connectors (part # 1778120), supports 10-24 AWG wire
Indicators and Controls
LED Status Indicators Signal, limit, clip, fault
User Interface Controls Mute, input sensitivity, output attenuation, EQ on/off, preset select. 240 x 64 LCD. Additional controls available w/ ControlSpace® Designer™ software
Electrical Specifications
Mains Voltage 100-240 V (50/60 Hz)
Mains Connector IEC 60320-C14 (Inlet)
Minimum AC Line Voltage 80 V (reduced output power)
Maximum Inrush Current 15.4 A (230 VAC, 50 Hz)
Maximum RMS Current Draw 8 A
Efficiency, 1/3 Rated Power > 68 % (pink noise input signal)
Output Stage Topology Class-D
Overload Protection High temperature, DC, HF, short, voltage limiter, current limiter, inrush current, mains circuit breaker protection
Physical
Dimensions 3.5" H x 19" W x 20.7" D (88 mm x 483 mm x 525 mm)- 2 rack space
Net Weight

28.3 lb (12.8 kg) Shipping Weight: 34 lb (15.4 kg)
Mounting Depth 21" (533 mm)
Operating Temperature 32 °F - 104 °F (0 °C - 40 °C)
Cooling System Microprocessor-controlled, variable-speed fans, front to rear airflow
General
Setup and Configuration Software ControlSpace® Designer™ software V3.2 or greater
PC Interface Connection USB (Network version adds Ethernet RJ45)
Fault Notification Output NC/NO Relay Contact (1 A, 30 VDC), 3-pin Phoenix Contact® connector (orange color; part # 1976010)