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Engineered for professional PA installations where high order performance standards and ultra reliability are demanded, the A 4075 and A 4085 conservatively deliver 125W and 250W RMS power respectively. Frequency response extends from 50Hz to 15kHz ±3dB at a total harmonic distortion (THD) of less than 0.5% @ 1kHz. Voice/Vox muting, including an Input 1 priority function, bass and treble controls and phantom powering capability enable unparalleled flexibility for a wide scope of applications such as schools, shopping centres, workshops, mine sites and office buildings. Operates from 240VAC mains or 24VDC permitting battery backup operation during mains power failure. Output can be 100V line, 70V line or low impedance (4 - 16ž) loads. Thermal overload protection circuit and fuses on both AC and DC circuitry provide excellent fault condition protection and robust performance.
Features:
• LED bargraph VU meter
• Input presence signal indicator
• Output peak limited
• Multi-stage thermally cued cooling
• 2U 19" rack mount
• Tape record out terminals
• Remote volume facility
• Optional alert, evac, bell & chime tone generator (A 2073)
• Vox activated 24V DC output
• 6 balanced inputs with 3 pin XLR or 2 X RCA sockets
• Phantom powering available on all inputs
• Three levels of priority
• Option for mic or line to operate vox muting for each input
• Push to talk (PTT) terminals on rear panel
• Bass and treble tone controls
• Power amp line out connector
• Output terminals for 100V line, 70V line and 4 - 16 Ohm loads
• 240V AC mains or 24V DC power operation
• Thermal and fuse overload protection
• Inbuilt short circuit protection
• 300mA trickle charge facility for 24V DC batteries
• Australian designed and assembled
• 10 Year warranty
Specifications:
Power output: 125 watts RMS
Distortion: < 0.5%, @ 1kHz
Output line: 70V, 100V or 4 - 16 Ohm
Line output: 600 Ohm balanced, 0dBV
Frequency response:
Mic inputs: 50Hz - 12kHz, -3dB
Aux inputs: 50Hz - 15kHz, -3dB
Input Sensitivity:
Mic inputs: 3mV balanced
Aux inputs: 100mV-1V
Signal to noise ratio:
(Limiting bypassed)
Mic inputs: > 75dB below rated output
Aux inputs: > 81dB below rated output
Output connectors:
Speakers: Screw terminals
Line out: 3 pin XLR
Input connectors:
Inputs: 3 pin XLR balanced or 2 x RCA
24V DC power: Screw terminals
240V AC power:IEC power connector
Muting: PTT via microphone switch contacts or VOX muting
Controls:
Mic inputs: Volume
Aux inputs: Volume
Bass: ±10dB @ 100Hz
Treble: ±10dB @ 10kHz
Master:Volume
Power: On/off switch
Indicators: Power, fault, VU meter, signal present, output peak limiting
Power Supply: 240V AC or 24V DC
Fuse Protection: 5A AC, 10A DC
Dimensions 483W x 330D x 88H mm
Weight: 14.5kg
Colour: Black
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