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Large-area system offers flexible, powerful software control of mixing, equalization, compression and phase shift. Potent, class D, pulse-width amplifiers maximize efficiency and reduce size and weight. Dual-amplifier design offers the option of a single 12A output for large perimeter loops or dual 10A outputs for phase loop arrays.
The loop amplifier shall have a RJ-45 ethernet jack to provide configuration capability over an ethernet (10 base T) network.
It shall have an RJ-45 Dante ethernet jack*.
It shall have a USB jack to provide firmware upgrades to the amplifier using a computer.
It shall have two MIC/LINE LEVEL 3-pole terminal block inputs, balanced or single-ended, with 48 V phantom supply in microphone mode.
It shall have a configurable PRIORITY INPUT function.
It shall have a 70-100 V, 2-pole terminal block input, to provide a high/speaker-level input connection for use with distributed speaker systems.
It shall have an internal frequency generator for calibration providing 100 Hz, 500 Hz, 1 kHz, 2.5 kHz and 5 kHz tones, and Pink Noise.
It shall have two LINE OUTPUTS, balanced or single-ended to provide loop-through connections for line level signals going to other equipment such as recording devices or additional loop amplifiers.
It shall have a 1/4” Headphone jack on front panel for monitoring of inputs or outputs, selectable in the menu.
It shall have a loop fault relay output (NC,NO,C) for triggering external systems when a loop fault occurs. This shall be integrated into the RS-232 DB-9 connector.
It shall provide an output drive voltage of up to 33.3 Vrms, 47.6 Vpk per output.
It shall provide an output current of up to 12 Arms, 17 Apk per output.
It shall have a front control interface consisting of a backlit LCD screen and control button/dial.
It shall have adjustable settings for input mixing, parametric equalization, compression, frequency-shaping, metal loss compensation, high and low-pass filters, AGC and audio delay.
It shall display warnings for LOOP FAULT (open loop, shorted loop or out of impedance range), OVER TEMP, and CLIPPING. It shall have protection against loop faults and overheating (amplifier shuts down).
It shall be controllable by devices such as a Windows Surface Tablet, or PC, with PC App software installed.
It shall be compatible with either US or international power systems with the appropriate power cord.
Performance shall meet IEC 60118-4 system performance requirements when loop system is designed and installed correctly.
Specifications/testing shall conform to IEC 62489-1 benchmark testing standards
The loop amplifier shall be the Williams Sound model DL210 NET 2.0.
The loop amplifier with the Dante input* shall be the Williams Sound model DL210 NET D 2.0.
2 RU Rackmount, 19” W x 3.5” H x 12” D. Chassis is 17” W.
14.3 lbs (6.5 kg)
Case: Black, white and blue legends on front, white legends on back. LCD: Backlit Blue.
Variable Speed, Temperature Controlled
Internal, Universal 100-240 VAC, 50/60 Hz, 250 Watt. Fuse: 5 x 20 mm, 5 A, 250 V.
AC power plug is IEC 320-C14.
Heat output @ 120 VAC
Sleep state: 100 BTU/hr; Idle state: 146 BTU/hr; Driving two loops @ 12 A each: 1,040 BTU/hr
(1x) RJ-45; 10-100 MBps.
(1x) standard-B. USB 1.1, 2.0 or 3.0 supported.
RS-232/Loop fault relay
(1x) DB-9 jack. RS-232: Pin 2=Tx, Pin 3=Rx, Pin 5=gnd. Loop fault relay: Pin 1=NC, Pin 4=Common, Pin 6=NO. Relay contact rating: 2.0 A @ 30 VDC.
0-35° C ( 32-95° F), 0-90% relative humdity.
31,400 sq. ft. (2,917 sq. m.) (Perimeter Loop, 1:1 aspect ratio, both outputs driven)
51,660 sq. ft. (4,800 sq. m.) (Perimeter Loop, 3:1 aspect ratio, both outputs driven)
No. Dante input available on DL210 NET D 2.0 model only.
(2x) 3-position terminal block, 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 (48V).
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.
(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.
(1x) 2-position terminal block per output
Audio output delay
Adjustable from 0 to 165 msec
(1x) 1/4” stereo headphone jack, on front of unit. Monitored input or output selectable in menu.
Loop fault relay
Integrated into RS-232 DB-9 jack. Pin 1=NC, Pin 4=Common and Pin 6=NO. Contact rating: 2.0 A @ 30 VDC.
Loop output drive voltage
33.3 Vrms (47.1 Vpk) continuous
Rated loop output current*
12 Arms (17 Apk) per output
Loop resistance range
0.5 Ω to 3.0 Ω (DC)
Integrated into Loop Output A terminal block (switchable in menu). 225 Watts x 1 channel @ 4Ω, 125 Watts x 1 channel @ 8Ω, (Class D). Frequency response = 20 Hz-20 kHz, THD=0.07%.
0.5 Ω DC with 135 µH inductance
Loop 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 LCD display menu access/adjustment via control button/dial.
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.
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.
CE, UL, ULC, FCC, Industry Canada, RoHS, WEEE, CB scheme, RCM
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.
20 - 20kHz
Max Power Input
118 dB @ 1kHz
10-3/8" (L) x 6-¼" (W) x 1/8" (H)
Dimensions: 7" H x 6" W x 1-3/4" D (18 cm H x 15 cm W x 4.5 cm D)
Weight: 12.7 oz.(360 g)
4.1"H x 2.85"W x 1.38"D (104 mm H x 72 mm W x 35 mm D).
4.6 oz (130 g) with batteries, 2.6 oz (73 g) without batteries.
Black ABS/polycarbonate molded plastic case.
(2) AA (1.5VDC) Alkaline or NiMH (rechargeable).
Up to 200 hours with Alkaline batteries.
Green LED indicates power on, flashes when batteries are low.
3.5mm stereo TRS jack works with mono or stereo headphones.
External switched thumb wheel controls power on/off and volume level.
Rotary control inside battery compartment (1kHz reference at 400mA/m input with Tone at mid position)
Maximum reception: receiver oriented vertically
35mW (max) into 33 ohms mono impedance
300Hz to 10KHz, -6dB
|Loop System Quick Setup Guide||Manuals||English|
|Induction Loop Certification Form (IEC 60118-4)||Supplements||English|
|DL210 NET D 2.0 Specifications||Specifications||English|
|Williams Sound - Digi-Loop Amplifiers|
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