PROFESSIONAL CLASS-D LOOP AMPLIFIERS

The Opus Technologies LD2.2 is next-generation, low-loss magnetic loop amplifiers. This device incorporates two independent amplifiers out of phase.
They provide an output current of 2x7Arms, as well as a AGC to ensure optimum audio quality. The amplifier incorporate a fault synthesis that controls continuously the loop and the amplifier. The information is displayed on the front panel and can be deported thanks to a dry contact.
It can equip adjoining rooms (amphitheater, courtroom, etc) with two magnetic loops installed hairpin. This type of installation makes it possible to limit the external radiation of the magnetic field, to guarantee uniformity of coverage and to provide a power wich makes it possible to limit the distortions due to the presence of metal.


TECHNICAL DATAS:


Coverage max: single loop 1200m² (20x60m²)
Coverage max: multiloop 525m² (15x35m²)

INPUT
Audio input 3 differencial inputs: 2x line/microphone and 1X 100V
Connector type Phoenix and/or Combo Neutrik
Phantom supply 12V 2mA
Sensitivity -50dB micro, +40dB 100V, -10dB line
Slave input 6,35 mm jack plug, second LD2.2
Priority 100V, input 1

POWER SUPPLY
Type Integrated
Voltage 115/230Vac (automatic) 50/60Hz
Power 500A
Idle consumption 9W

AUDIO CHARACTESRITICS
THD <0,5% at 1ohm /1KHz / full current
Automatic Gain Control AGC optimized for speech, dynamic > 36dB
Bandwidth 80Hz to 9,5KHz


OUTPUT
Loop impedance 0,5O to 3O
Output voltage 34Vrms (48Vpk)
Peak current 2X11A
Peak current (at 1KHz) 2X7Arms

FUNCTIONS
LED displays Power, Protect, Clip and Correct Loop
Metal loss correction Adjustable from 0 to 3dB/octave
Relay NO/NC fault relay

DIMENSIONS
HxLxD 42 x 200 x 215mm
Weight 1,2 kg