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
Max coverage : single loop	1200 m² (20*60 m²)
Max coverage : multiloop	525m² (15x35m²)
Operating temperature	0 to +45°C
Storage temperature	-30 to +70°C
INPUT
Audio inputs	3 inputs: x2 line/microphone, x1 100V
Connector type	Phoenix and/or Combo Neutrik
Phantom supply	12V 2mA
Sensitivity	-50dB microphone, +40dB 100V, -10dB line
Slave entry	Jack 6.35mm
Priority	100V input, INPUT 1
POWER SUPPLY
Type	Integrated
Voltage	115/230V (automatic) 50/60 Hz
Nominal power consumption at 1 Ohm	100 W
Maximum input power	<600VA
Consumption at rest on connected loop	14W at 230V AC, 2 loops of 1 Ohm connected, at ambient temperature after 30 minutes of stabilization
AUDIO CHARACTERISTICS
THD	<0,5% @1ohm / 1KHz / nominal current
Metal loss correction	0 to 3 dB per octave
Automatic gain control	AGC optimized for speech Dynamic > 36dB
Bandwidth	80 Hz to 9,5 kHz at -3 dB
Phase shift	Included
OUTPUT
Loop impedance	0,5Ω à 3Ω
Output voltage	34V rms(48V pK)
Peak current	2x 11Apk
RMS current	2 x 7,5Arms
ADDITIONAL FUNCTIONS
LED display	«Power», «Protect1», «Protect2», «Loop»
Verification (synthesis fault)	Open loop Thermal protection
Relay	NO/NC fault relay 0,5A/125Vac, 1A/24VDC
DIMENSIONS (MM)
HxLxD	42 x 200 x 215 mm
Weight	1,56 kg