Induction Loop System with Network Control


Medium-area system offers DSP audio processing, calibration tools for ease of installation, audio override, pink noise generator, and the option of a local or PC app configuration.

Single output (7 amps). Ideal for perimeter and single array installations.


System Includes

  • (1) DL107 NET DSP induction loop amplifier
  • (2) PLR BP1 body-pack receivers with batteries
  • (2) EAR 013 single mini earbuds
  • (1) BAT KT6 Dual Drop-in Charger Kit (includes CHG 3502 Dual Drop-In Charger and (2) BAT 026-2 AA NiMH batteries)
  • (1) PLW F300  300 ft. roll of flat power loop wire
  • (2) FWT 001 rolls of flat wire warning tape
  • (1) IDP 009 ADA wall plaque (T-Coil)
  • 5-year Warranty on amplifier





1 RU Rackmount, 19” W x 1.75” H x 10” D.  Chassis is 17” W.


DL107: 9.2 lbs (4.2 kg)

DL207: 9.2 lbs (4.2 kg)


Case: Black, white and blue legends on front, white legends on back.   LCD: Backlit Blue.

Fan cooling

Variable Speed, Temperature Controlled

Power supply

Internal, Universal 100-240 VAC, 50/60 Hz, 200 Watt.  Fuse: 5 x 20 mm, 5 A, 250 V.   

AC power plug is IEC 320-C14.

Heat output @ 120 VAC

DL107 : Sleep State: 63 BTU/hr; Idle State: 71 BTU/hr; Driving one loop @ 9.5 A: 339 BTU/hr

DL207: Sleep State: 63 BTU/hr; Idle State: 84 BTU/hr; Driving two loops @ 9.5 A each: 638 BTU/hr


(1x) RJ-45; 10-100 MBps.


(1x) standard-B. USB 1.1, 2.0 or 3.0 supported.


0-35° C ( 32-95° F), 0-90% relative humidity,

Coverage area*

DL207 (dual output amplifier): 

30,000 sq. ft. (2,786 sq. m.)  (Perimeter Loops, 3:1 aspect ratio, both outputs driven) 

18,000 sq. ft. (1,672 sq. m.)  (Perimeter Loops, 1:1 aspect ratio, both outputs driven) 

DL107 (single output amplifier): 

15,000 sq. ft. (1,393 sq. m.)  (Perimeter Loop, 3:1 aspect ratio) 

9,000sq. ft.   (836 sq. m.)     (Perimeter Loop, 1:1 aspect ratio) 


Dante input

On “D” models only. (1x) RJ-45;100 Mbps. Minimum latency:   2 ms.  Audio sample rates supported: 44.1, 48 kHz.  Resolution: 24 bits. 

Line inputs

(1x) 3-position terminal block, 10 kΩ input impedance.  Configurable/accepts -10 dBV, -4 dBu, +4 dBu, +8 dBu, balanced or unbalanced. Level adjustable 0 to -96 dB.

Mic/Line inputs

(1x) XLR 3-pin jack.  Input impedance: 1.5 kΩ Mic, 10 kΩ Line. Configurable/Accepts:  Mic, Line -10 dBV, Line +4 dBu, or Line +8 dBu, balanced or unbalanced.  Phantom supply (24V).

70-100 V input

(1x) 2-position terminal block; high/speaker-level input (accepts 25 V, 70 V or 100 V) from distributed audio/paging systems.


Line outputs

(1x) 3-position terminal block; loop-through of Mic/Line Input 1 & Line Input 2, +4 dBu,  Balanced or Unbalanced.  The line outputs mirror the audio of the loop output.

Loop output(s)

(1x) 2-position terminal block per output

Audio output delay

Adjustable from 0 to 165 msec

Headphone output

(1x) 1/4” stereo headphone jack, on front of unit.  Monitored input or output selectable in menu.

Loop fault relay

(1x) 3-position terminal block providing NC, NO and Common.  Contact rating: 2.0 A @ 30 VDC.

Loop output drive voltage

16.1 Vrms (22.8 Vpk) continuous

Rated loop output current*

9.5 Arms (13.4 Apk) per output

Loop resistance range

0.5 Ω to 3.0 Ω (DC)


Rated load*

0.5 Ω DC with 135 µH inductance

Frequency response

45 Hz to 9.0 kHz ± 2 dB (1 kHz ref.)

Rated loop THD*

<1 % at rated output current (1 kHz sine wave).


Front controls

Front LCD display menu access/adjustment via control button/dial.

Adjustable settings

Input mixing, parametric equalization, compression, metal loss compensation, high and low-pass filters, AGC and audio delay, output levels. See User Manual for adjustment range(s).

Internal calibration tools

Test tone generator with pink noise, loop current adjustment/matching.  See User Manual for details.

Other features

Save/load configuration, loop test, priority input selection with adjustable threshold, loop fault relay, open/short and thermal protection.  See User Manual for details.

Network control & firmware

Function control and calibration by DigiLoop PC App via ethernet (RJ-45).  PC App requires Windows 7 or higher. 

Firmware updates through USB only.


2 years


CE, UL, ULC, FCC, Industry Canada, RoHS, WEEE, CB scheme, RCM

Standards compliance

This product is designed to meet the IEC-60118-4 standard when correctly designed, installed and commissioned.

Test Specifications provided to the IEC 62489-1 standard.


Accessories for Induction Loop System with Network Control [DL107 SYS]

EAR 013 Single mono earbud

FWT 001 Loop Warning Tape

IDP 009 ADA Wall Plaque (T-Coil)


Induction Loop Certification Form (IEC 60118-4) Supplements English
Loop System Quick Setup Guide Manuals English


Williams Sound - Digi-Loop Amplifiers

Our full line of Induction Loop Amplifiers

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