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Listen Technologies Induction Loop Driver Professional ASL Amplifier | 4.9 Amps | Wall Mount

Listen Technologies Induction Loop Driver Professional ASL Amplifier | 4.9 Amps | Wall Mount

SoundPro Item: 51404 | Part Number: CLS2

$1,017.45
$1,071.00 $1,017.45
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MSRP: $1,071.00 | MAP: $1,017.45

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  • Three Independent Audio Inputs Accommodate Mic, Line, And Speaker-Level Sources In One Chassis
  • Speech-Optimized Automatic Gain Control Maintains Consistent Output Across Dynamic Vocal Range
  • Metal Loss Correction Circuit Compensates For Frequency Attenuation From Building Structures
  • Tamper-Resistant Hinged Cover Secures All Connections And Controls After Commissioning
  • Vertical Panel Mounting Design Enables Discreet Installation In Equipment Closets And Back-Of-House Areas
  • Five-Year Manufacturer Warranty Backed By Technical Support For Long-Term System Reliability
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Engineered for integrators installing assistive listening systems in ADA-compliant venues, this professional induction loop driver provides reliable telecoil compatibility for hearing aid and cochlear implant users. The compact enclosure mounts vertically on any wall surface with tamper-resistant access to all connection points and calibration controls. Automatic gain control optimized for spoken word maintains consistent signal strength across dynamic speech patterns, while the metal loss corrector compensates for frequency-dependent attenuation caused by steel rebar, HVAC ducts, and structural beams.

Three independent input stages accept balanced microphone sources with phantom power, balanced and unbalanced line-level feeds, and direct connection from distributed 100V speaker systems or low-impedance zones. Front-panel LED indicators confirm loop current flow and AGC activation status during commissioning and routine verification checks. The driver operates from standard branch circuits and includes mounting hardware, installation documentation, and large-format telecoil signage for occupant notification.

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Specifications

Certifications
Compliance
ETL Listed
Protection
IP20
Loop
Coverage (1:1 Aspect Ratio)
2,690 sq ft. (250 m²)
Coverage (2:1 Aspect Ratio)
3,337 sq ft. (310 m²)
Coverage (3:1 Aspect Ratio)
4,300 sq ft. (400 m²)
Loop Resistance
0.2 to 1.3 Ohms
Audio
Frequency Response
80 Hz to 6.5 kHz ± 3 dB
Distortion
THD+N < 0.2%, 1 kHz Sine Wave at Full Current
AGC
Optimized for Speech, Dynamic Range > 36 dB
RF
Input 1
Balanced Mic/Line (-73/-31 dBu), 12 VDC Phantom Power
Input 2
Balanced Line (-33 dBu), 12 VDC Phantom Power
Input 3
Balanced Line (-31 dBu)
Input 4
Isolated 100 V/ Low Impedance Mono/Stereo Speaker
Input Impedance
120k, 120k, 7.8k Ohms
Min Level
+14/+14/-9 dBu
Max Level
+47/+47/+27 dBu
Interconnections
Loop Connector
Screw Terminal
Power
Power
230/115 VAC, 30W, 45-65 Hz, Connected via Chassis Screw Terminals
Drive Voltage
6.4 V (RMS) at Maximum Output Current
Drive Current
4.9 A (RMS), 7.0 A (Peak) with 1 kHz Sine Wave
Drive Current Peaks
Short Term > 10 A
Input Power Fuse
T250 mA
Controls
Gain Control
Front Recessed Input Level Control
Metal Loss Correction
Correct System Frequency Response Due to Metal Structures
Cooling
Natural Convection
Indicators
LEDs
AGC is Activated, Loop Current, Power
Drive Current Indication
LED
Dimensions
Width
7.9 in. (200 mm)
Height
1.7 in. (44 mm)
Depth
7.9 in. (200 mm)
Weight
Weight
4.0 lbs. (1.81 kg)
Environmental
Relative Humidity
20 to 90%
Temperature Range
32 F (0 C) to 95 F (35 C)
Included Items
Includes
One (1) CLS2 Induction Loop Driver (4.9 Amps), One (1) Handbook and Installation Instructions, One (1) "T" Logo Installed Adhesive Sign – Large (11.7" x 8.3"), One (1) P-clip, Nut and Washer
Shipping
Shipping Weight
5.1 lbs. (2.31 kg)
Cable Length
10 AWG
Max Distance at Full Current: 232 ft. (71 m)
14 AWG
Max Distance at Full Current: 214 ft. (65 m)
18 AWG
Max Distance at Full Current: 146 ft. (44 m)
22 AWG
Max Distance at Full Current: 81 ft. (25 m)
FB1.8
Max Distance at Full Current: 286 ft. (87 m)

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