Power Amplifers

These compact 1RU rack mount amplifiers are suitable for both stand alone PA system use, or as zone amplifiers in larger systems requiring local inputs. All models operate on 240V AC or 24V DC for battery backup operation.The input consists of a 3-pin XLR which can be set for either balanced mic level (3mV) or balanced line level (2V), adjusted via a rear-mounted trimpot. A dual RCA input is also provided with adjustable sensitivity of either 300mV or 1V. Phantom power is also provided on the input XLR. The circuit includes protection features in case of output over voltage, over current and over temperature. All are self re-setting once the fault condition is removed. Visual indication via front panel LEDs display amplifier status at all times. Features Compact 1RU 19” rack mount design Balanced mic or line input 100V line output Phantom power Overload limiting Over voltage limiting On demand fan cooling (60W and 100W versions only) Over temperature shut down protection Dual input connectors Variable input sensitivities 240V AC / 24V DC operation Australian designed & manufactured Specifications Power Outputs A 4240A: 60 watts RMS Distortion: < 0.5%, @ 1kHz Frequency Response Mic input: 50Hz - 12kHz, -3dB Line input: 50Hz - 15kHz, -3dB Sensitivity Mic input: 3mV-2V balanced Line input: 300mV-1V Signal to noise ratio Mic input: > 75dB below rated output Line input: > 81dB below rated output Output Connectors Speakers: Screw terminals (100V line) Input Connectors Inputs: 3 pin XLR balanced or 2 x RCA 24V DC power: Screw terminals 240V AC power: IEC power connector Current Draw Min: 170mA Max: 4.5A Size & Weight Dimensions: ≈ 483W x 210D x 44H Weight: ≈ 5.5kg

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These booster amplifiers are suitable for high-powered installations where each zone requires a specific wattage. They are perfect for shopping centers, pedestrian areas, public transportation hubs, and convention centers. All models can run on both 240V AC and 24V DC for battery backup. The input is through a 3-pin balanced XLR (1V), with a rear-mounted level control to prevent tampering or accidental adjustment.The Redback 250W Public Address (PA) Power Amplifier A4380A, made in Australia, boasts a circuit design with built-in protection features for output over voltage, over current, and over temperature conditions. These features are self-resetting once the fault condition is eliminated. Amplifier status is always displayed through front panel LEDs, providing visual indication. To ensure reliable operation at all times, the amplifier features on-demand fan cooling. Additionally, a dedicated nominal 24V dc 1A output is included on the rear to power additional devices. The unit is also equipped with rack ears for easy installation. Features Robust design incorporating latest Mosfet technology Very Low noise and distortion 70V, 100V and 4-16Ω outputs 240V AC or 24V DC operation 24V DC @ 1 Amp output for external devices Multi stage thermally cued fan cooling Output Peak Limited Thermal Overload protected Signal Presence Indicators Fault Indicators Power Status Indicators Rack Mountable (suits 19 inch racks) Specifications Power: 250 Watt RMS Distortion: < 0.5%, @ 1kHz Frequency response: 50Hz - 15kHz, -3dB Output line: 100V, 70V, or 4 - 16Ω Signal to noise ratio: (peak limiting by-passed) > 90 dB Line output: 600Ω balanced, 0dBV, 3 pin XLR Input Impedance: ~10KΩ Speaker Connection: Screw terminals 24V DC Output: Screw terminals Inputs: 3 pin XLR (1V) 24V-30V DC power: Screw terminals 240V AC power: IEC power connector Indicators: Mains, 24V DC, Power, Signal presence, Over temp, Over current, Shut down, Peak limiting Current draw: 250mA Standby, 17A Full @ 24V DC Protection: 7.5A AC and 20A DC fuse Power supply: 240V AC or 24V DC (nominal) Dimensions: 483W x 340D x 88 mm Weight: 14kg

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Choose a power rating based on the wattage needed for each zone in installations where high power zone amplifiers are required. These models are perfect for use in shopping centers, pedestrian areas, public transportation facilities, and convention centers. All models operate on 240V AC and 24V DC for battery backup and use 3 pin balanced XLR (1V) for input. Rear-mounted level control prevents tampering or accidental adjustment.The design of the circuit includes built-in safeguards in case of over voltage, over current, and over temperature conditions, which are automatically reset once the issue is resolved. Amplifier status is constantly displayed through front panel LEDs, while reliable operation is maintained through on-demand fan cooling. Additionally, a dedicated 24V DC 1A output is available on the rear for powering additional devices. Features Robust design incorporating latest Mosfet technology Very Low noise and distortion 70V, 100V and 4-16Ω outputs 240V AC or 24V DC operation 24V DC @ 1 Amp output for external devices Multi stage thermally cued fan cooling Output Peak Limited Thermal Overload protected Signal Presence Indicators Fault Indicators Power Status Indicators Rack Mountable (suits 19-inch racks) Specifications Power: 125 Watt RMS Distortion: < 0.5%, @ 1kHz Frequency response: 50Hz - 15kHz, -3dB Output line: 100V, 70V, or 4 - 16Ω Input sensitivity: 1V balanced Signal to noise ratio: (peak limiting by-passed) > 90 dB Line output: 600Ω balanced, 0dBV, 3 pin XLR Speaker Connection: Screw terminals 24V DC Output: Screw terminals Inputs: 3 pin XLR (500mV) 24V-30V DC power: Screw terminals 240V AC power: IEC power connector Indicators: Mains, 24V DC, Power, Signal presence, Over temp, Over current, Shut down, Peak limiting Current draw: 250mA Standby, 8A Full @ 24V DC Protection: 5A AC and 10A DC fuse Power supply: 240V AC or 24V DC (nominal) Dimensions: 483W x 340D x 88H mm Input Impedance: ~10KΩ

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These booster amplifiers are perfect for areas that need high power zone amplification. Simply choose the appropriate power rating for each zone's wattage needs. These models are well-suited for shopping centers, public transportation hubs, and convention centers. They all run on both 240V ac and 24V dc for backup battery operation and feature a 3-pin balanced XLR input (500mV). The level control is located on the back to prevent tampering or accidental adjustments.This power amplifier includes built-in protections for potential issues such as output overvoltage, overcurrent, and overtemperature. These features are self-resetting once the problem is resolved. The front panel also displays the status of the amplifier at all times via LED lights. To ensure dependable operation, a fan cooling system is activated as needed. Additionally, a dedicated 24V DC output with a capacity of 1A is located on the rear of the amplifier for powering auxiliary devices. Features Robust design incorporating the latest Mosfet technology Very Low noise and distortion 70V, 100V and 4-16Ω outputs 240V AC or 24V DC operation 24V DC @ 1 Amp output for external devices Multi stage thermally cued fan cooling Output Peak Limited Thermal Overload protected Signal Presence Indicators Fault Indicators Power Status Indicators Rack Mountable (suits 19 inch racks) Specifications Power: 125 Watt RMS Distortion: < 0.5%, @ 1kHz Frequency response: 50Hz - 15kHz, -3dB Output line: 100V, 70V, or 4 - 16Ω Input sensitivity: 500mV balanced Signal to noise ratio: (peak limiting by-passed) > 90 dB Line output: 600Ω balanced, 0dBV, 3 pin XLR Speaker Connection: Screw terminals 24V DC Output: Screw terminals Inputs: 3 pin XLR (500mV) 24V-30V DC power: Screw terminals 240V ac power: IEC power connector Indicators: Mains, 24V DC, Power, Signal presence, Over temp, Over current, Shut down, Peak limiting Current draw: 250mA Standby, 8A Full @ 24V DC Protection: 5A a.c. and 10A dc fuse Power supply: 240V ac or 24V dc (nominal) Dimensions: 483W x 340D x 88 mm Weight: 12.4kg Input Impedance: ~10KΩ

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