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Listen Technologies Induction Loop Driver Professional ASL Amplifier | 3.5 Amps | Wall Mount

Listen Technologies Induction Loop Driver Professional ASL Amplifier | 3.5 Amps | Wall Mount

SoundPro Item: 51403 | Part Number: CLS1

Regular price $748.60
Regular price $788.00 Sale price $748.60
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MSRP: $788.00 | MAP: $748.60

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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

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
Environmental Protection
IP20
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
Performance
Coverage 1:1 Aspect Ratio
1,290 sq ft (120 m²)
Coverage 2:1 Aspect Ratio
1,615 sq ft (150 m²)
Coverage 3:1 Aspect Ratio
2,150 sq ft (200 m²)
Connectivity
Input 1
Balanced Mic/Line (-73/-31 dBu), 12 VDC Phantom Power
Input 2
Balanced Line (-33 dBu)
Input 3
Isolated 100 V/Low Impedance Mono/Stereo Speaker
Input Impedance
120k, 120k, 7.8k Ohms
Minimum Level
+14/+14/-9 dBu
Maximum Level
+47/+47/+27 dBu
Loop Connector
Screw Terminal
Electrical
Power
230/115 VAC, 30W, 45-65 Hz
Drive Voltage
6.4 V RMS at Maximum Output Current
Drive Current
3.5 A RMS, 5.0 A Peak with 1 kHz Sine Wave
Drive Current Peaks
Short Term > 7 A
Input Power Fuse
T250 mA
Controls
Gain Control
Front Recessed Input Level Control
Metal Loss Correction
Corrects System Frequency Response Due to Metal Structures
Cooling
Natural Convection
Indicators
LEDs
AGC Activated, Loop Current, Power
Drive Current Indication
LED
Construction
Mounting
Vertical Panel Mounting
Dimensions
Width
7.9"
Height
1.7"
Depth
7.9"
Weight
Weight
4.0 lbs
Shipping
Shipping Weight
5.1 lbs
Environmental
Relative Humidity
20 to 90%
Operating Temperature
32°F to 95°F (0°C to 35°C)
Included Items
Includes
CLS1 Induction Loop Driver, Handbook and Installation Instructions, "T" Logo Installed Adhesive Sign (11.7" x 8.3"), P-clip, Nut and Washer
Cable Length
10 AWG
Max Distance 357 ft (109 m) at Full Current
14 AWG
Max Distance 330 ft (101 m) at Full Current
18 AWG
Max Distance 224 ft (68 m) at Full Current
22 AWG
Max Distance 125 ft (38 m) at Full Current
FB1.8
Max Distance 436 ft (133 m) at Full Current

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