Room and accessibility
Hearing Assist Receiver Calculator
Quick answer
Under the 2010 ADA Standards a 250 seat assembly space needs 10 assistive listening receivers, of which at least 3 must be hearing-aid compatible. Houses of worship are exempt from ADA Title III, though most churches meet the table anyway.
The receiver count is not a percentage, which is what most people assume. It is a stepped table in section 219.3 of the 2010 ADA Standards, and the steps get shallower as the room gets bigger: a 100 seat room needs four receivers and a 1,000 seat room needs thirty-five, not forty.
The honest caveat first, because it changes the decision: houses of worship are exempt from ADA Title III. Most churches choose to meet the table anyway, and the exemption does not cover a church that rents its auditorium to the public or operates a school, so the safe planning assumption is to meet it.
Hearing assist receiver calculator
Receivers required
Assistive listening systems for your seat count
Top matches update when you change your numbers.
Williams Sound FM ADA Kit 1 Large Area Value Kit, Range of up to 1000 feet, Meets new 2010 ADA Accessibility guidelines, Made in USA
$972.00A complete FM assistive listening kit with a transmitter, receivers, earphones and neck loops, assembled to meet the 2010 ADA receiver and hearing-aid-compatibility counts for a small room.
Best for: A sanctuary under about 150 seats
Check price on Amazon
Williams Sound FM ADA KIT 37 FM ADA Compliance Kit, Simple Set-up and Operation, 150' Operating Range, 100 Hours Receiver Battery Life, Meets new 2010 ADA Accessibility guidelines, Made in USA
$1,918.00The larger kit, for the receiver counts a 300 to 500 seat room needs. The ADA table is not linear: a 300 seat room needs 12 receivers and a 1,000 seat room needs 35.
Best for: A 250 to 500 seat sanctuary meeting the ADA counts in one purchase
Check price on Amazon
Listen Technologies LP-4VP-072 Assistive Listening DSP Value Package, Includes LT-803-072 Stationary 3-Channel RF Transmitter, 72 MHz
$1,154.00A stationary transmitter with four DSP receivers on the 72 MHz assistive listening band, which is reserved for this purpose and therefore far cleaner than an unlicensed band.
Best for: A building that wants a dedicated, interference-free listening system
Check price on Amazon
Listen Technologies LR-4200-072 Intelligent DSP RF Receiver 72 MHz, Integrated Neck Loop Lanyard, OLED Display, Dual 3.5mm Outputs, Micro USB Charging, T-Coil Compatible Assistive Listening
$98.28A single additional receiver with the neck loop lanyard built in. This is how you meet the ADA count: buy a base kit, then add receivers until the number matches the seats.
Best for: Topping up an existing system to the required receiver count
Check price on Amazon
Listen Technologies Portable Display RF Receiver (72 MHz)
$119.99A receiver with a display, so an usher can confirm it is on the right channel rather than handing out a unit that turns out to be silent.
Best for: Systems handed out by volunteers at the door
Check price on Amazon
Listen Technologies LA-430 Intelligent Ear Phone/Neck Loop Lanyard, Black, Compatible with All iDSP Receivers, 3.5mm Earphone Jack, Provides the Correct Field Strength and Flat Frequency Respon
$71.00A neck loop that feeds a hearing aid on its telecoil setting directly. At least a quarter of receivers must be hearing-aid compatible, and this is what makes an ordinary receiver compatible.
Best for: Meeting the hearing-aid-compatible share of the ADA receiver count
Check price on AmazonHow many assistive listening receivers does the ADA require?
The full table from the 2010 ADA Standards, section 219.3. At least 25 percent of receivers, and never fewer than two, must be hearing-aid compatible, which in practice means supplied with a neck loop.
A 250 seat assembly space needs 10 assistive listening receivers under the 2010 ADA Standards, of which 3 must be hearing-aid compatible, and a 1,000 seat space needs 35 receivers with 9 hearing-aid compatible.
| Seats | Receivers required | Hearing-aid compatible | Share of seats |
|---|---|---|---|
| 50 | 2 | 2 | 4% |
| 100 | 4 | 2 | 4% |
| 150 | 6 | 2 | 4% |
| 200 | 8 | 2 | 4% |
| 250 | 10 | 3 | 4% |
| 300 | 12 | 3 | 4% |
| 400 | 16 | 4 | 4% |
| 500 | 20 | 5 | 4% |
| 600 | 24 | 6 | 4% |
| 750 | 28 | 7 | 3.7% |
| 1,000 | 36 | 9 | 3.6% |
| 1,250 | 40 | 10 | 3.2% |
| 1,500 | 45 | 12 | 3% |
| 2,000 | 55 | 14 | 2.8% |
| 2,500 | 60 | 15 | 2.4% |
The table steps rather than scaling: 2 receivers up to 50 seats, then 2 plus one per 25 seats to 500, then 20 plus one per 33 seats to 1,000, then 35 plus one per 50 to 2,000, then 55 plus one per 100 above that.
Which type of assistive listening system suits a church?
Four technologies are in common use and they differ mostly in what the listener has to do. That matters more than the specification, because a system nobody uses is not an accessible system.
An induction hearing loop is the only system where the listener needs no receiver at all, because it feeds their own hearing aid directly through its telecoil, which is why usage is far higher than with handed-out receivers.
| System type | What the listener uses | Advantage | Trade-off |
|---|---|---|---|
| 72 to 76 MHz FM | Reserved for assistive listening | Very clean, no competition for the band | Receivers must be handed out and collected |
| 216 to 217 MHz FM | Assistive listening | Clean, longer range than 72 MHz | Same handout logistics |
| Induction hearing loop | Telecoil in the hearing aid | No receiver to hand out at all, total privacy for the user | Installation cost, and a wire loop around the seating area |
| Infrared | Line of sight light | Cannot leave the room, which suits courts and confidential settings | Blocked by obstacles and washed out by sunlight |
| Wi-Fi to a phone | The listener’s own device | No hardware to issue, uses equipment people already carry | Latency behind the live sound, and it depends on your network |
FM on the reserved 72 MHz band is the most common church installation because it is inexpensive and works anywhere in the building. A loop costs more to install and is used far more, which is the more important measure.
What feeds the system matters more than the receivers
The most common failure is not the receiver count, it is what the transmitter is fed. An assistive listening system taking a copy of the house mix delivers exactly the problem the listener already has: a room full of reverberation with the voice buried in it.
Feed it from a dedicated aux send with the speech channels prominent and the music pulled back. The listener wants intelligibility, not balance, and a mix that would sound wrong in the room is usually the right mix in an earpiece. This is the same principle as mixing for a livestream and it is just as often missed. Account for that aux send when you size the console with the mixer channel calculator.
On the equipment itself, a complete kit such as the Williams Sound FM ADA Kit 1 Large Area Value Kit, Range of up to 1000 feet, Meets new 2010 ADA Accessibility guidelines, Made in USA covers a small sanctuary with its receiver and hearing-aid-compatible counts already matched to the table. Larger rooms usually start with a package like the Listen Technologies LP-4VP-072 Assistive Listening DSP Value Package, Includes LT-803-072 Stationary 3-Channel RF Transmitter, 72 MHz and then add individual receivers such as the Listen Technologies LR-4200-072 Intelligent DSP RF Receiver 72 MHz, Integrated Neck Loop Lanyard, OLED Display, Dual 3.5mm Outputs, Micro USB Charging, T-Coil Compatible Assistive Listening until the count matches the seats, with Listen Technologies LA-430 Intelligent Ear Phone/Neck Loop Lanyard, Black, Compatible with All iDSP Receivers, 3.5mm Earphone Jack, Provides the Correct Field Strength and Flat Frequency Respon neck loops covering the hearing-aid-compatible share.
Sources
- 2010 ADA Standards for Accessible Design, section 219.3, assistive listening receiver counts
- Manufacturer published receiver counts and coverage figures for the systems listed
Frequently asked questions
How many assistive listening receivers does a church need?
Under the 2010 ADA Standards a 250 seat space needs 10 receivers, a 500 seat space needs 20, and a 1,000 seat space needs 35. At least a quarter of them, and never fewer than two, must be hearing-aid compatible. Houses of worship are exempt from ADA Title III, but most churches meet the table anyway and it does bind a church that rents its auditorium to the public.
Are churches legally required to provide assistive listening?
Generally no. Religious entities are exempt from ADA Title III, which is the part that covers public accommodations. The exemption is narrower than it sounds, though: a church that rents its auditorium for public events, operates a school or receives certain federal funding may be covered. Treat meeting the table as the safe planning assumption rather than an optional extra.
What does hearing-aid compatible mean?
It means the receiver can feed a hearing aid directly rather than through an earphone, which in practice means it is supplied with a neck loop. The loop creates a small magnetic field that the telecoil in a hearing aid picks up, so the listener hears the feed through their own fitted hearing aid rather than over the top of it. At least 25 percent of receivers must offer this.
Is a hearing loop better than FM receivers?
For usage, substantially. With a loop the listener switches their hearing aid to its telecoil setting and needs to ask nobody for anything, so people who would never approach an usher for a receiver are served. The trade is installation cost and a wire loop laid around the seating area. FM is cheaper to install and works anywhere in the building, but it depends on someone handing out equipment.
Why do people say our assistive listening system does not help?
Almost always because it is fed a copy of the house mix. That delivers the same reverberant, music-heavy sound the listener is already struggling with. Feed the transmitter from a dedicated aux send with the speech channels well forward and the music pulled back. A mix that sounds wrong in the room is usually the right mix in an earpiece.
Can people use their own phone instead of a receiver?
Some systems stream over Wi-Fi to a phone app, which removes the hardware handout entirely and uses a device people already carry. The catch is latency: the audio arrives noticeably behind the live sound, which is distracting when the listener can also see the speaker. It works better as a supplement than as the primary system.
Researched, not professional advice. This page is compiled from published manufacturer specifications, operator manuals, FCC rules, published standards and owner-review consensus, not hands-on testing. Sound system design, rigging loudspeakers overhead, and any electrical work are jobs for a qualified professional: have flown loudspeakers and their attachment points signed off by a structural engineer or a certified rigger, and have all wiring done by a licensed electrician to your local code. Wireless microphone rules change, so confirm the current FCC position before buying. As an Amazon Associate we earn from qualifying purchases.