Caption Monitor Setup: Screens, Phones and Placement

The simplest caption monitor setup puts live captions on the phone of every person in the room, so nobody depends on where a screen sits. Live Caption AI does this with a QR code: the speaker runs it on a phone or laptop, attendees scan and read. No app to install, no hardware to rent, no stenographer to book. If you also want a shared screen up front, this guide covers where it goes, how large the text should be, and how to test it before people arrive.

TL;DR

• Start with phones. A QR code gives each attendee a personal caption display, at their own seat and their own text size.
• If you add a shared monitor or projector, put it where people already look, ideally just below the main screen, and show at least two lines of text.
• Size text for the farthest seat. One-inch characters are legible up to about 50 feet, according to a sports-venue accessibility white paper.
• Test from every seating position, with the real microphone, before the event, and watch quality during it.
• Captions support your effective-communication duties under the ADA, but an AI tool does not make an organization compliant by itself.

Table of Contents

• What a caption monitor setup actually involves
• Option 1: Captions on every phone through a QR code
• Option 2: A shared screen in the room
• Option 3: Both together
• Step by step: setting up your caption display
• What the ADA says about captions at live events
• Transcripts and privacy
• Put captions on every phone in the room
• FAQ
• Sources

What a caption monitor setup actually involves

A caption “monitor” is any surface that shows the words as they are spoken. That can be a projector screen, a TV on a stand, an LED wall, a confidence monitor on stage, or the phones in people’s hands. Every setup has the same three parts:

1. A source of words. Someone or something turns speech into text.
2. A route. The text travels from the source to the display.
3. A display. People can see it, read it and keep up.

Traditional live captioning with a human captioner (called CART, for Computer-Assisted Realtime Translation) works like this: a transcriber types what is said into a computer that projects the words onto a screen. The captioner usually sends a link, and the organizer sets up a screen and projector or individual monitors to display it. The same guidance notes that larger events can offer QR access on attendees’ own devices.

That last point is the one most churches and small event teams find most practical. A shared screen has to be placed, powered, cabled and aimed. A phone is already in the pocket of the person who needs the captions.

Option 1: Captions on every phone through a QR code

This is the setup we recommend first, because it removes most of the equipment questions.

How it works with Live Caption AI

• The speaker opens Live Caption AI on a phone or laptop and starts a session.
• A QR code appears. Put it on a slide, a bulletin insert, a table card or a sign at the door.
• Attendees scan it and read live captions in their phone’s browser. No app, no account.
• Viewers can switch between the original text and a translation, when you have turned translation on.

Why it solves the placement problem

A wall screen is read from wherever someone sits. A phone is read from 15 inches away. The person in the back row of the balcony, the parent in the nursery overflow room and the guest sitting at an angle to the projector all get the same clear view. Text size is something each reader can adjust on their own device, so you are not choosing one size for the whole room.

What to prepare

• A place for the speaker’s phone or laptop with reliable power and a connection. Check your venue’s Wi-Fi or cellular coverage in the seating area, since the captions travel over the network.
• A clear microphone feed or a speaker who talks close to the device. Caption quality starts with audio quality.
• The QR code in at least two visible places, plus a spoken announcement at the start.

The Free plan gives basic on-device captions. Paid plans unlock the cloud-based features that put captions on attendees’ phones. Professional is $19.99 a month with unlimited captioning, which is the plan most single-room churches and meeting hosts look at. Business starts at $199 per month on the same page.

For a deeper walk-through of the QR approach, see our guide to cloud live transcription via QR.

Option 2: A shared screen in the room

Some rooms benefit from a shared display as well: a sanctuary with a projector already in place, a conference stage with big side screens, a classroom with a wall display. If you add one, these are the decisions that matter.

Where to place it

People read captions most comfortably when they sit close to what they are watching. A white paper on caption access in sports venues recommends making LED displays, handheld devices and televisions available, and placing LED caption displays below the main videoboards when possible. The logic carries over to any room: put captions directly below the main screen, so the eye moves down a few inches instead of across the room. This also echoes the familiar layout of broadcast TV captions.

For a church, that usually means the lower edge of the projection screen or a display on the same sightline as the pulpit or stage. For a conference, it means below or beside the main presentation screen, not on a far wall.

Avoid putting captions where lighting washes them out, or where a speaker, plant or lectern blocks them from part of the room.

How big the text should be

The same white paper cites a manufacturer recommendation of at least two lines of captions, with three or four lines best, and notes that one-inch characters are legible up to 50 feet. Use that as a rule of thumb:

The second row is a straight scaling of the cited ratio, not a published figure. Measure your own room instead of guessing: stand at the farthest seat and check that the text is comfortable, not just readable.

If your room is large, display size becomes the main constraint. Some outdoor and big-venue events turn to a mobile LED screen for exactly this reason. In a typical sanctuary or meeting room, the QR route avoids that cost.

How to mount and position the display

A monitor on a stand is easy to bump and hard to aim. A fixed mount gives you a consistent angle, and a twin pole monitor arm is one way to hold a screen at the height and tilt you set during rehearsal. For a confidence monitor used by the speaker or an interpreter, keep it at eye level so they are not looking down at a table.

Keeping text readable

• High contrast: white or yellow text on a dark background.
• Two to four lines, not a full page of scrolling text.
• A plain, sans-serif typeface with no decorative styling.
• No overlap with slides, lower-third graphics, lyrics or logos.

Option 3: Both together

Many teams end up with a hybrid. The shared screen serves people who like to look up at the front. The QR code serves everyone else, including guests seated far away or at an angle, and anyone who wants a larger font.

The Hearing Loss Association of America points out that captions alone can be challenging and tiring for some people, and that hearing-assistive technology combined with CART gives the highest level of access. Offering several ways to follow along, with clean audio from the sound system as the base, is better than relying on one display.

Step by step: setting up your caption display

1. Decide who the captions are for

Start with the people in your room. Do you have members who are deaf or hard of hearing? Guests who speak another language? A hybrid audience online? The answer shapes whether you need one display, many, or translation.

2. Get clean audio into the system

Caption accuracy depends on audio. Whoever is speaking should use a microphone consistently. The CART guidance advises reminding speakers to use the mic, slow down, and repeat audience questions, since captions cannot pick up what the microphone did not catch. If you use a mixer, give the captioning device its own clean feed or place it close to the speaker.

An AV checklist for live events adds a useful principle: every source needs a defined route to each destination, a clear owner and a tested recovery path. Decide who owns the captions on the day, and what happens if the connection drops.

3. Prepare vocabulary

Generic speech recognition stumbles on names, places and specialist terms. Professional captioners are advised to receive presentation materials, names and technical terms far in advance for the same reason.

Live Caption AI handles this in two ways:

• Specialized models: Medical, Worship & Ministry, and Finance & Earnings.
• Custom Terms: up to 100 names, places and terms the speaker types in before going live.

For a church, load your pastor’s name, staff names, book names, local places and recurring terms. For a finance event, add company and product names. For a medical education session, choose the Medical model. This is for education and information sessions, not clinical use.

4. Set up translation if you need it

Live Caption AI translates into one of 29 languages per session. The speaker picks one source language and one target language, and viewers switch between the original and the translation on their own phones. If your audience speaks several languages, plan a session per language need, or choose the one that serves the largest group. Announce the language option when you show the QR code so people know to look for it.

AV companies running multilingual events should confirm target languages with the client early, and tell attendees which language the session offers.

5. Place the QR code and any shared screen

Put the QR code on the main slide at the opening, on printed programs and on signs at the entrance. If you add a shared screen, place it below the main display and aim it so that nobody has to turn their head far.

6. Test from every seat

The CART guidance recommends testing display methods from every seating position and watching caption quality during the event. In practice:

• Walk to the farthest seat, the side seats and the front row.
• Scan the QR code on an iPhone and an Android phone.
• Speak a few lines with the real microphone, including a name from your Custom Terms.
• Check glare from windows and stage lights.
• Assign one person to keep watching the captions during the service or event.

7. Fix common problems fast

What the ADA says about captions at live events

Under the ADA, covered entities must communicate effectively with people with disabilities. The right aid depends on the nature, length, complexity and context of the communication, and on the person’s normal communication methods. State and local governments must give primary consideration to the aid the person requests.

That means there is no single setup that satisfies every case. A short announcement and a two-hour lecture can call for different aids. Live Caption AI is an AI captioning tool, not a certified or human-reviewed service, and it does not make an organization ADA-compliant on its own. An organization can use it as part of its effective-communication plan. Our ADA effective communication toolkit explains how to build that plan, and your own attorney or ADA coordinator is the person to confirm what your situation requires.

Transcripts and privacy

A caption setup also leaves you with a record, and the details matter to churches and organizations:

• Every session’s transcript is saved automatically to the speaker’s account.
• Transcripts are readable only by the speaker.
• Speakers can delete a transcript from History.
• Session audio is never stored.
• Transcripts export as TXT, SRT, JSON or PDF, and AI summaries are included.

Live Caption AI is not HIPAA-compliant and is not intended for courtroom or clinical use. It suits education sessions, worship services, meetings, classes and events.

What we have learned from watching caption setups

Most caption problems we hear about are not about the screen. They are about distance, audio and setup time. A monitor that works for the first three rows leaves the rest of the room guessing.

That is why we built Live Caption AI around the phone. Everyone already has a display, and everyone can set the text size they need. A speaker starts a session, shows a QR code, and the room is captioned. No hardware to rent. No stenographer to book.

We also think vocabulary is where small teams win or lose. A church that loads its pastor’s name and its ministry terms into Custom Terms, and chooses the Worship & Ministry model, will see far fewer embarrassing misses than one that does not. The same goes for Medical and Finance & Earnings vocabulary at their events.

Captions are one part of access. Good microphones, a clear speaker and a named person who owns the setup matter just as much.

Ryan

Put captions on every phone in the room

If you are replacing a costly human captioner, or trying to caption a service on a church budget, start with the setup that needs no equipment. Professional is $19.99 a month with unlimited captioning, and translation into one of 29 languages is available per session. Business starts from $199 per month for larger organizations. Medical, legal and professional teams can read more on our professional settings page.

Explore Live Caption AI and see which plan fits your room.

FAQ

Where should live captions be displayed in a room?

Put a shared caption display directly below the main screen or on the same sightline as the speaker, so viewers do not have to look away from the action. A sports-venue accessibility paper recommends this placement. Offering captions on phones as well covers the seats a wall screen cannot serve.

How many lines of captions should I show?

Show at least two lines, and three or four if space allows. Fewer lines force the text to move too fast, and more lines make the block hard to scan. Size the characters for your farthest seat, using one inch per 50 feet as a starting point.

Do attendees need to install an app to read captions?

Not with Live Caption AI. Attendees scan a QR code and read captions in their phone’s browser, with no app and no account. The speaker runs the session from a phone or laptop.

Can I show captions in another language?

Yes. Live Caption AI translates into one of 29 languages per session. The speaker chooses one source language and one target language, and viewers can switch between the original and the translation.

Sources

• Best Practices for Working with a Communication Access Real-time Translation provider (NY.gov)
• ADA Requirements: Effective Communication (ADA.gov)
• Communicating Effectively with People with Disabilities (ADA.gov)
• Captioning white paper, Section E, 4th edition (Sports Video Group)
• Effective Communication via Computer-Assisted Realtime Transcription (Hearing Loss Association of America, Seattle)
• Corporate AV Systems Checklist for Live Events
• Twin Pole Mounted Monitor Arm
• Mobile LED screen: when size matters

Recommended

• AV Captioning Workflow: From Speaker Audio to Phone Screens
• Event Hosts: Broadcast Captions to Phones, Test QR 15–30 Minutes Early
• BYOD Captions: Live Captions on Attendees’ Own Phones