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Description
Williams AV DL207 SYS Digi-Loop Medium Area, Dual Channel Hearing Loop SystemThe DL207 SYS hearing loop system maximizes modern amplifier technology. Its network control capability provides seamless, remote system set up, operation, and monitoring of the induction loop system via a laptop or tablet. DSP audio processing offers flexible, powerful software control of mixing, equalization, compression, and more. Powerful Class D pulse width amplifier maximizes the efficiency of the unit. The assistive listening systems design
The DL207 SYS hearing loop system maximizes modern amplifier technology. Its network-control capability provides seamless, remote system set-up, operation, and monitoring of the induction loop system via a laptop or tablet. DSP audio processing offers flexible, powerful software control of mixing, equalization, compression, and more. Powerful Class D pulse-width amplifier maximizes the efficiency of the unit.
The assistive listening system’s design offers a dual 9.5 A rms loop output for dual loop or phased array configuration. A 70-100 V input connects to a distributed speaker/paging system, ensuring announcements are heard by hearing aid users.
Meet IEC 60118-4 standards on system performance when integrated into a correctly designed and installed system. The DL207 SYS is also tested to IEC Specifications 62489-1 Benchmark Standards.
Specifications
| GENERAL | |
| 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) | |
| INPUTS | |
| 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. |
| OUTPUTS | |
| 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) |
| AUDIO | |
| 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* | [lt]1 % at rated output current (1 kHz sine wave). |
| OTHER | |
| 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. |
EAR 013
| Plug | 3.5 mm mono |
| Cord length | 39 inches |
| Impedance | 32 Ohms |
| Frequency Range | 20 - 20kHz |
| Max input power | 5mV |
| Sensitivity | 128dB @ 1kHz |
| Driver size | 13 mm |
| Weight | 9g |
| Replacement earpad | EAR 015 |
FWT 001
| Description | Cloth-based warning tape, 2 in. Width, 165 ft Length per roll. |
| Dimensions | 6" Dia x 2" W x 165' L Roll |
| Weight | 1.28lbs |
| Color | White cloth. Williams Sound logo, T-Coil Logo, and Warning Text. |
| Warning Text | Warning: Do not cut or disturb - Hearing assistance induction loopwire |
| Used with | PLW F300, PLW F500 |
PLR BP1
| Dimensions: | 4.1"H x 2.85"W x 1.38"D (104 mm H x 72 mm W x 35 mm D). |
| Weight: | 4.6 oz (130 g) with batteries, 2.6 oz (73 g) without batteries. |
| Color/Material: | Black ABS/polycarbonate molded plastic case. |
| Battery Type: | (2) AA (1.5VDC) Alkaline or NiMH (rechargeable). |
| Battery Life: | Up to 200 hours with Alkaline batteries. |
| LED Indicator: | Green LED indicates power on, flashes when batteries are low. |
| Headphone Jack: | 3.5mm stereo TRS jack works with mono or stereo headphones. |
| Volume control: | External switched thumb wheel controls power on/off and volume level. |
| Tone control: | Rotary control inside battery compartment (1kHz reference at 400mA/m input with Tone at mid position) |
| Induction Coil: | Maximum reception: receiver oriented vertically |
| Power Output: | 35mW (max) into 33 ohms mono impedance |
| THD: | [lt]2% |
| Frequency Response: | 300Hz to 10KHz, -6dB |
PLW F500
| Length | 500 ft (152.4 m) |
| Width | OD: 22 mm (with insulation) ID: 19 mm (bare copper) |
| Thickness | OD: 0.17 mm (with insulation) ID: 0.1 mm (bare copper) |
| Cross Sectional Area (Bare Copper) | 1.9mm2 |
| Spool Dimensions | 8-1/8” W x ¾” H (20.6 cm W x 1.9 cm H) |
| Spool Weight | 6.5 lbs (2.9 kg) |
| Color/Material | Copper with Mylar (polyester) encapsulation |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Tough and sturdy
Size: Medium
Have lasted my dog for years now and she is a tough chewer. Worth the money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
★★★★★ 5
Our German Sheppard loves these
Size: Medium
These cost a bit more than tennis balls, but they are so much nicer and longer lasting. For starters, they stay cleaner than tennis balls because they’re smooth rubber. Dirt won’t build up on them and if anything does stick, like grass or soil, it falls off once the dog slobber dries. They’re also thick, so they don’t fall apart or blow out like a normal tennis ball does in our dog’s jaws after 30 seconds. Our GS chomps on these like crazy and the only damage they’ve suffered is a crack that developed from the edge of the hole, but the crack is growing very slowly and none of these balls have totally failed yet. The balls do whistle when thrown ant high speed and that may help a dog track and locate it, but I’m not sure. Our neighbors hear the whistling too so it’s far from silent. Lastly the orange ball is easy to locate out in our yard, but the dark blue practically disappears.
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Reviewed in the United States on April 6, 2025
★★★★★ 5
Great for smaller dogs
Size: Small
These two balls are perfect for the smaller mouthed dog that loves to play fetch.
These balls are not only super durable (lots of teeth biting), but float in the baby pool we use for our miniature dachshunds.
The value here is much better than you’d find anywhere else. The noise, if bitten hard enough, was “low” at best. Easy to spot/find if overthrown. Will definitely buy again once these are in bad repair; so far, so good-love these for my fur babies!
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Reviewed in the United States on October 8, 2024
★★★★★ 5
My dogs favorite balls
Size: Medium
These are great for my dog who always has to have a ball in her mouth. Not too hard so I don't have to worry about her teeth. They last for ever. They do lose their shape a little over time (like I said, she always has a ball in her mouth) they become a little oval in shape. They still bounce, she still chases it and she still chews on it so I don't think she notices or cares. I've gotten her a bag full of these over time and I have only seen one that she chewed a chunk out.
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Reviewed in the United States on September 28, 2023
★★★★★ 5
My Dachshunds Love These
Size: Small
These balls are durable, flexible material, highly chewable without being easily destroyed. I stuff them with Milkbone Maro Snacks, which are just the right size to twist into the holes in the ball. My dogs literally get an hour+ chewing and chasing entertainment from these. They chew them, they sometimes 'pop' out of their mouths, go rolling across the floor, dogs chasing them. This satisfies their urge to hunt prey. Dachshunds can easily tear this kind of stuff-it-toy apart. These have lasted for a long time without tearing or shredding. I would NOT recommend them for a dog much larger than a tweenie weenie. They're a bit on the small side and might be swallowed by a larger dog. It would be cool it they also came in a larger size (and probably ball wall thickness also) for the bigger dogs to enjoy. These stuff-it chew balls are better than the kong balls my dogs had before these. Highly recommend them.
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Reviewed in the United States on April 19, 2024