BOSE PowerMatch PM4250 เครื่องขยายเสียง 4X250 วัตต์ 4-8 โอห์ม 70/100V

รหัสสินค้า : PowerMatch PM4250

BOSE PowerMatch PM4250 เครื่องขยายเสียง 4X250 วัตต์ 4-8 โอห์ม 70/100V

The Bose® PowerMatch PM4250 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. 

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.

Technical Summary 

General

Product TypePower amplifier

Audio System

FunctionsAmplifierAmplifier ClassDDigital Sound Processor (DSP)YesAudio SpecificationsAmplifier - Response Bandwidth - 20 - 20000 Hz - SNR - 99 dB - THD - 0.4%Output Power / Total1000 WattAmplifier Output Details250 Watt - 2/4/8 Ohm - THD 0.1% - 4 channels

500 Watt - 4/8 Ohm - THD 0.1% - 2 channels (bridged)

1000 Watt - 4 Ohm - THD 0.1% - 1 channels (quad bridged)

400 Watt - THD 1% - 2 channels (70V bridged)

800 Watt - THD 1% - 1 channels (70V quad bridged)

500 Watt - THD 1% - 2 channels (100V bridged)

1000 Watt - THD 1% - 1 channels (100V quad bridged)FeaturesThermal protection, DC protection, high frequency protection, 70V/100V or 2/4/8 Ohm operation

Connections

Connectors4 x balanced audio input (3 pin block connector) - rear

4 x speakers output - rear

USB (4 pin USB Type A) - front

Power

Voltage RequiredAC 120/230 V (50/60 Hz)

Dimensions & Weight

Width19 inDepth20.7 inHeight3.5 inWeight24.47 lbs