PowerMatch® PM4250 / PM4250N
configurable power amplifier
TECHNICAL DATA SHEET
Bose Professional Systems Division
2
OF 7
pro.Bose.com
Technical 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 See footnote 3 See footnote 3
V-Bridge Mode
250 W
2
500 W 500 W 400 W 500 W
I-Share Mode
500 W
250 W
2
150 W
2
Not available Not available
Quad Mode
1000 W
2
1000 W
500 W
2
800 W 1000 W
Maximum Rated Power 1000 W (250 W 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 Specifications
Frequency Response 20 Hz - 20 kHz (at 1 W and +/- 0.5 dB)
Signal-to-Noise Ratio, Analog Input > 99 dB (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, 2-band RoomMatch® array EQ
Maximum Output Delay 3 s
Output Limiter Peak and RMS voltage
Audio Inputs
Input Channels
Analog Digital (Optional Card)
4 (balanced line level) 4, selectable range
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 1 to 4 (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 configuration, 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 Circuit Recommendation 15A (120 V) or 10A (230 V)
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)
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
24.4 lb (11.1 kg) Shipping Weight: 30.0 lb (13.6 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
(9 pages)
(78 pages)
(40 pages)
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