PROFESSIONAL CLASS-D LOOP AMPLIFIERS

The LD4.2 is the latest generation of Opus Technologies low-loss loop amplifier.
Capable of delivering two time 15 amp, it is the most powerfull amplifier on the market for low spill lay out, covering large room areas up to 3200 m².
The Combo-XLR-3 and Phoenix Contacton the INPUT 1 and 2 inputs can be configured asconfigured as LINE or microphone inputs microphone inputs (balanced ineach case). A phantom voltage of 12 V can also be activated on the inputs for condenser microphones.
With the Automatic Gain Control (AGC), the device ensures a constant field strength, which results in a very stable sound and high-quality sound reproduction. Its face shift allows to interconnect several amplifiers to cover large area.


KEY FEATURES
• Classe D amplifier
• Integrated power supply
• 100V input
• The most compact and powerfull on the market
• Integrated phase shift 0°/90°0
• Large coverage up to 3200m²
• Protection against short circuit
• Warranty 5 years
• Automatic Gain control ( AGC )
• Wall mounting available
• IEC 62368 compliant


TECHNICAL SPECIFICATION
Power supply: 90 - 265 VAC 50-60 Hz
Max. current: 2x 15 A RMS
Passive protection: 3.15 Afuse
Max. coverage area: 3200 m² according to IEC 60118-4 norm
Max. output voltage: 2x 48 V peak-to-peak
Connections: Speakon connectors
Protections: Active short-circuit protection
Bandwidth: 100 to 5000 Hz (± 3dB)
Distorsion: <1% at rated output power, 1kHz
Loop connection: Screw connectors at the back of the amplifier
Outputs: 2x Slave Out with adjustable phase shift 0°/90°, jack 6,36
Headphone: Headphone output (front) 6,35mm jack

INPUT
IN 1 AND 2: 0.5mV to 100 mV
MIC: 10 kOhm or 25 Mv to 4V
LINE: 10 kOhm
Configurable 12V phantom power, XLR3
IN 3: 100 V input for connection to other sound equipement
Correction: Automatic Gain Control (AGC ) (audio input)
Dynamic range: >36 dB

SETTING AND DISPLAY
Gain adjustment: IN1, IN2, IN3
Treble control: 0 to + 9 dB
Loop current adjustment

INDICATORS
Power supply: Green LED
Input gain level: Green LED
Magnetic loop current: Green LED

PHYSICAL FEATURES
Dimensions: 32 x 144 x 143 mm
Weight: 1,5kg