- Description
Details
Bose PowerMatch PM4250N 4-Channel Power Amplifier 4 x 250 Watts at 4 Ohms
The Bose® PowerMatch PM4250N 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.
QuadBridge™ Technology
Allows the 4 available channels to be configured as Mono, V-Bridge, I-Share or Quad mode, allowing the total available power of the amplifier to be allocated to one or more output channels. The amplifier is capable of driving both low impedance and 70/100V loudspeaker loads directly.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.
- Features
Features
- QuadBridge™ Technology
- Bose® ControlSpace® Designer™ software
- Auto-Standby/Auto-Wake function
- Dual voltage and current feedback loop
- PeakBank™ power supply
- Fast-tracking power factor correction
- Class-D PowerMatch amplifier
- Specification
Power Rating 2 Ω THD for Power Rating, Typical < 0.1 % Mono Mode 250W V-Bridge Mode 250W2 I-Share Mode 500W Quad Mode 1000W2 4 Ω THD for Power Rating, Typical < 0.1 % Mono Mode 250W V-Bridge Mode 500W I-Share Mode 250W2 Quad Mode 1000W 8 Ω THD for Power Rating, Typical < 0.1 % Mono Mode 250W V-Bridge Mode 500W I-Share Mode 150W2 Quad Mode 500W2 70 V THD for Power Rating, Typical 1 % V-Bridge Mode 400W Quad Mode 800W 100 V THD for Power Rating, Typical 1 % V-Bridge Mode 500W Quad Mode 1000W Maximum Rated Power 1000W (250W x 4 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 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 4 x 4 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 Analog Input Channels 4 (balanced line level) Input Impedance > 100 kΩ Sensitivity 0, +4, +12, +24 dBu, selectable Maximum Input Level +24 dBu (at 24 dBu sensitivity setting) Connectors, Input 3-pin Phoenix Contact® (green color; part # 1776168) Digital (Optional Card) Input Channels 4, selectable range Sensitivity Digital: 0, -12, -20, -24 dBFS, selectable Connectors, Input Card Dependent Audio Outputs (Output Channels) 1 to 4 (configurable), 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 configuration, output attenuation, EQ on/off, preset select User Interface Controls 240 x 64 LCD. Additional controls available w/ ControlSpace® Designer™ software Electrical 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 4 A Efficiency, 1/3 Rated Power > 66 % (pink noise input signal) Cooling System Microprocessor-controlled, variable-speed fans, front to rear airflow Output Stage Topology Class-D Operating Temperature 32 °F - 104 °F (0 °C - 40 °C) Overload Protection High temperature, DC, HF, short, voltage limiter, current limiter, inrush current,breaker protection General Setup and Configuration Software ControlSpace® Designer™ software V3.2 or greater Physical 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 Mounting Depth 21" (533 mm) Dimensions (H x W x D) 3.5" (88 mm) x 19" (483 mm) x 20.7" (525 mm) Net Weight 24.4 lbs (11.1 kg) Shipping Weight 30.0 lbs (13.6 kg) - Documents
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