Bose PM8500

Configurable 8-Channel Power Amplifier with Onboard DSP

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The Bose PowerMatch PM8500 configurable professional power amplifier provides concert-quality sound with a high level of scalability and configurability. The PM8500 offers multiple channel and power options, an integrated audio DSP, front panel interface and USB connection. An expansion slot supports inputs from optional digital 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. The PM8500 provides USB connection for single-unit setup and control using Bose ControlSpace® V3.0 or higher software.

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. The amplifier is capable of driving both low impedance and 70/100V loudspeaker loads directly.

PowerMatch amplifiers can be fully configured using ControlSpace Designer software via the onboard front panel USB connection. 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.

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

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.

Regenerative 4-quadrant power supply enables higher power density while allowing the reuse 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.

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.

Bose PM8500 Specifications:

  • THD For Power Rating:
    • 2 Ohms: < 0.1%
    • 4 Ohms: < 0.1%
    • 8 Ohms: < 0.1%
    • 70V: 1%
    • 100V: 1%
  • Mono Mode:
    • 2 Ohms: 450 Watts
    • 4 Ohms: 500 Watts
    • 8 Ohms: 300 Watts
    • 70V: Tap selectable
    • 100V: Tap selectable
  • V-Bridge Mode:
    • 2 Ohms: 450 Watts
    • 4 Ohms: 1000 Watts
    • 8 Ohms: 1000 Watts
    • 70V: 800 Watts
    • 100V: 1000 Watts
  • I-Share Mode:
    • 2 Ohms: 1000 Watts
    • 4 Ohms: 500 Watts
    • 8 Ohms: 300 Watts
    • 70V: Not available
    • 100V: Not available
  • Quad Mode:
    • 2 Ohms: 1000 Watts
    • 4 Ohms: 2000 Watts
    • 8 Ohms: 1000 Watts
    • 70V: 1600 Watts
    • 100V: 2000 Watts
  • Maximum Rated Power: 4000 Watts (500W x 8 channels at 4 Ohms)
  • Peak Output Voltage: 71 / 142 V (Mono / V-Bridge, I-Share, and Quad modes)
  • Voltage Gain: 33 / 36 / 33 / 36db (Mono / V-Bridge / I-Share / Quad modes)
  • Audio Performance:
    • Frequency Response: 20 Hz - 20 kHz (at 1 W and ±0.5dB)
    • Signal-to-noise Ratio, Analog input: >102dB (1dB 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)
    • 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, 2-band RoomMatch® array EQ
    • Maximum Output Delay: 3 s
    • Output Limiter: Peak and RMS voltage


NOTE: For further information and specifications on this amplifier, please refer to the attached Data Sheet under the Documentation Tab

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