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. All models include a choice of six source options on 2 inputs. Input one 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 is also provided on input one with adjustable sensitivity of either 300mV or 1V. Input two consists of three sets of dual RCA sockets on the rear panel and a 3.5mm jack on the front panel. Auxiliary source inputs are selected via the front panel switch. Input one can be DIP switch selectable to VOX mute input two. Phantom power is also provided on input one XLR. Volume level controls are provided on the front panel for inputs one and two. 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 VOX muting Phantom power Four auxiliary inputs 3.5mm Jack Input (Front Mounted) 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 SPECIFICATION Power Outputs A 4255A: 100 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 Aux inputs: 300mV - 1V 3.5mm input: 600mV 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 1: 3 pin XLR balanced or 2 x RCA Input 2: 3 x RCA and 3.5mm Jack 24V DC power: Screw terminals 240V AC power: IEC power connector Size & Weight Dimensions: ≈ 483W x 210D x 44H Weight: ≈ 6kg *Specifications are subject to change without notice. warranty We offer 10 years warranty on this product from its date of purchase.
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