Multichannel Amplifier
The WORK PA 4150 L is a Class D amplifier designed for 70/100 V line-loop audio distribution systems requiring multiple independent outputs. It features four 150 W channels, a switching power supply and built-in protection circuits for fixed installations.
ARTICLE N° 124973
Presentation
The WORK PA 4150 L is a four-channel installation amplifier designed to power multiple sound distribution circuits on 70 V or 100 V networks. Each output delivers 150 W of power, allowing amplification to be distributed across different zones or groups of loudspeakers from a single rack-mounted unit.
Thanks to its Class D architecture and switch-mode power supply, the PA 4150 L maintains a compact 19-inch rack-mount form factor whilst incorporating four independent amplifier modules. The selection between 70 V and 100 V operation is made via DIP switches to adapt the unit to the type of network in use.
Each channel has its own volume control as well as dedicated LED indicators for monitoring operating status: signal presence, clipping and protection activation. This design facilitates the adjustment and monitoring of an installation comprising multiple broadcast lines.
The audio connections use Euroblock connectors for inputs and outputs, providing a connection suitable for permanent installation in a equipment rack. The amplifier also incorporates several electronic safety features to protect against short circuits, open circuits, excessive temperatures, ultrasonic signals and radio-frequency interference.
With its four independent channels, the WORK PA 4150 L is suitable for distributed sound systems in commercial premises, retail outlets, schools, hotels, multi-purpose halls or facilities requiring several separate audio zones.
Thanks to its Class D architecture and switch-mode power supply, the PA 4150 L maintains a compact 19-inch rack-mount form factor whilst incorporating four independent amplifier modules. The selection between 70 V and 100 V operation is made via DIP switches to adapt the unit to the type of network in use.
Each channel has its own volume control as well as dedicated LED indicators for monitoring operating status: signal presence, clipping and protection activation. This design facilitates the adjustment and monitoring of an installation comprising multiple broadcast lines.
The audio connections use Euroblock connectors for inputs and outputs, providing a connection suitable for permanent installation in a equipment rack. The amplifier also incorporates several electronic safety features to protect against short circuits, open circuits, excessive temperatures, ultrasonic signals and radio-frequency interference.
With its four independent channels, the WORK PA 4150 L is suitable for distributed sound systems in commercial premises, retail outlets, schools, hotels, multi-purpose halls or facilities requiring several separate audio zones.
Features
Canals
4
Amplification type
Class D
RMS power (W)
150
Weight
4,7 kg
Power supply
220 V
Packaging
Single unit
19" rack
1U
Connectors
Terminal block / Euroblock
Input channels
4
Other features
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WORK PA 4150 L
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Class D PA amplifier
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Operation: 70/100 V line
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Number of channels: 4
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Power output: 4 × 150 W
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Switch-mode power supply (Switch Mode Power Supply)
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70/100 V line selection via DIP switches
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Independent volume control per channel
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LED indicators:
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Signal
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Clip
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Protection
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Input sensitivity: 1 V ±0.1 V
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Input impedance:
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Balanced: 20 kΩ
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Unbalanced: 10 kΩ
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Frequency response: 100 Hz – 15 kHz
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Gain: 40 dB
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Harmonic distortion (THD+N): < 0.1 %
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Signal-to-noise ratio: > 95 dB
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Damping factor: > 200
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Crosstalk: > 70 dB
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Connectors:
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Audio inputs: Euroblock
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Audio outputs: Euroblock
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Protections:
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Short circuit
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Open circuit
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Overheating
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Ultrasound
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Radio frequencies (RF)
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Power supply: AC 110–240 V, 50/60 Hz
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Form factor: 19" rack – 1U
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Dimensions: 483 × 44 × 290 mm
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Weight: 4.7 kg
