Bose PM4250- User Manual

PowerMatch® PM4250 / PM4250N

configurable power amplifier

TECHNICAL DA

TA SHEET

Bose

Professional Systems Division

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p r o . B o s e . c o m

Product Overview

The Bose® PowerMatch PM4250 configurable professional

power amplifier provides concert-quality sound with a high

level of scalability and configurability. The PM4250 offers

multiple channel and power options, an integrated audio

DSP, front panel interface and USB connection. Ethernet-

equipped versions enable network configuration, control and

monitoring. 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. Available

in two versions, the PM4250 provides USB connection for

single-unit setup and control using Bose ControlSpace® V3.0

or higher software. The PM4250N adds Ethernet connectivity

for network control and monitoring of multiple “N” version

amplifiers.

Applications

Designed for a wide range of applications, including:

• Houses of worship

• Retail stores

• Atriums and malls

• Restaurants

• Auxiliary zones

• Conference centers

• Hospitality venues

Key Features

•

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.