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

Related products

OPUS TECHNOLOGIES,
ZI Lagrange II, 9 Chemin de la vieille Ferme,
33650, Martillac, FRANCE
(+33) 09 81 24 00 06  
  contact@opus-technologies.fr