Williams AV DL207 NET D Digi-Loop Medium Area Dual Channel Hearing Loop Dante Amplifier

Williams AV DL207 NET D Digi-Loop Medium Area Dual Channel Hearing Loop Dante Amplifier

DL207 NET D Hearing Loop System: Enhanced Efficiency and Powerful Performance

The DL207 NET D hearing loop system is a cutting-edge device that maximizes modern amplifier technology. It features network-control capability that allows for seamless, remote system set-up, operation, and monitoring using a laptop or tablet. The DSP audio processing technology provides flexible and powerful software control of mixing, equalization, compression, and other features. Additionally, the powerful Class D pulse-width amplifier ensures maximum efficiency of the unit.

This assistive listening system is designed with a dual 9.5 A rms loop output for dual loop or phased array configuration. It also features a 70-100 V input that connects to a distributed speaker/paging system, making sure that announcements are heard by hearing aid users.

The DL207 NET D complies with IEC 60118-4 standards on system performance when integrated into a correctly designed and installed system. It is also rigorously tested to IEC Specifications 62489-1 Benchmark Standards.

Key Features

• Remote control and calibration of the unit through application software
• Continuous high current output of 9.5 Arms (13.4 Apk) per output
• LCD screen with VU metering and easy one-button menu control
• DSP audio processing
• Dante™ input
• USB port for firmware updates
• Input mixing, parametric equalization, compression, metal compensation, high and low-pass filters, AGC, and audio delay
• Power-save mode
• Adjustable output delay for multiple amps in large venues
• Fault warning and active protection against shorted or open circuits and overheating
• Loop fault relay output
• XLR and 3-position terminal block input configurable as microphone input or line-input, balanced or unbalanced
• Standard 1 RU, 19" rackmount size
• Magnetic signal couples directly to devices equipped with telecoils (T-coils) such as hearing aids, cochlear implants, or optional loop receivers
• DL207 suitable for phased-array or dual-loop systems; DL107 suitable for perimeter loop or single array
• Phased-array mode automatically produces a 90° phase shift in slave loop output
• Meets IEC Specification 60118-4 (when designed and commissioned properly)
• Tested to IEC Specifications 62489-1 Benchmark Standards
• Complies with ADA/ADAAG guidelines.

Technical Specifications

System Includes
(1) PLA DL207 NET D - Induction Loop Amplifier
(1) WLC 004 - Line Cord (US)
(1) IDP 009 - ADA Wall Plaque (T-Coil)
Dimensions
1 RU Rackmount, 19” W x 1.75” H x 10” D. Chassis is 17” W.
Weight
DL107: 9.2 lbs (4.2 kg)
DL207: 9.2 lbs (4.2 kg)
Color
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
Ethernet
(1x) RJ-45; 10-100 MBps.
USB
(1x) standard-B. USB 1.1, 2.0 or 3.0 supported.
Environment
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.
Warranty
2-year warranty against component failure and manufacturing defects. See Full Warranty statement on the website for details.
Approvals
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.