LD2.2

Description

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.

The LD2.2 proven technology and quality of manufacturing allow us to offer a 5 years warranty.

Advantages

Class D amplifier
Ultra compact design
Total efficiency up to 92%
Fanless convection
Hight output voltage up to 48Vpk
Automatic gain control
Metal loss correction
Wall rounting attachment
Continuous loop monitoring with NO-NC relay
5 years warranty

Characteristics

LD2.2
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
Phase change	Included
OUTPUT
Loop impedance	0,5Ω to 3Ω
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