22 calculators
Church AV Calculators
Every calculator here takes your room's own numbers and shows its formula on the page, so you can check the working before you take the answer to a meeting. Each one also shows the gear that matches the result.
System design
- Amplifier Power Calculator Watts per loudspeaker from your seat count, throw distance, speaker sensitivity and service style, with peak headroom included.
- Church Sound System Cost Calculator What a complete system costs for your seat count and service style, broken into the seven budget lines a committee has to approve.
- AV Budget Allocator Split a total budget across speakers, amplification, console, wireless, monitors and infrastructure in the proportions that actually work.
- Sanctuary Coverage Calculator How many loudspeakers and what pattern your room shape needs, from width, depth and seat count.
Loudspeakers
- SPL Loss by Distance Calculator Sound level at any seat from the inverse square law, and the level you need at the mix position to reach the back row.
- Speaker Coverage Angle Calculator The horizontal and vertical pattern that covers your seating width at your throw distance, and the width a given pattern actually covers.
- Ceiling Speaker Spacing Calculator Spacing and speaker count from ceiling height and coverage angle, at edge to edge, minimum overlap or tight overlap.
- Subwoofer Sizing Calculator How many subwoofers your room and service style need, and whether cardioid placement is worth it.
- Delay Speaker Timing Calculator Milliseconds of delay for an under-balcony or mid-room fill, including the Haas offset that makes it disappear.
- 70 Volt System Calculator Tap wattage, total load and amplifier size for a distributed ceiling system, with the 80 percent headroom rule applied.
Console and signal
- Mixer Channel Count Calculator Build your input list, get the console size you need with room to grow, and see which consoles fit.
- Speaker Cable Gauge Calculator The wire gauge a run needs to keep cable loss under half a decibel, by length and speaker impedance.
- Rack Space Calculator Rack units for your gear list, including the vented space above every amplifier and room for the next thing.
- Power Draw and Circuit Load Calculator Amps drawn by the rack and how many circuits it needs, using the code rule that a continuous load gets 80 percent of the breaker.
Wireless and monitors
- Wireless Microphone Channel Calculator How many wireless channels fit in the TV spectrum open at your building, by analog, digital or high density mode.
- Wireless Battery Budget Calculator Rechargeable packs, charge cycles and the yearly alkaline cost for your transmitter count and service schedule.
- Monitor Mix Calculator How many monitor mixes your platform needs, and whether wedges, wireless in-ears or wired personal mixers are the right answer.
Video and livestream
- Projector Lumens Calculator ANSI lumens for your screen size and how bright the room really is, worked from foot-lamberts rather than a guess.
- Projection Screen Size Calculator Screen height and diagonal from your furthest seat, using the four, six and eight times rule.
- Livestream Bitrate and Upload Calculator Bitrate for your resolution and frame rate, the upload speed you must actually have, and data used per service.
Room and accessibility
Researched, not professional advice. These calculators are planning tools built on standard audio and video engineering formulas, each shown on its own page. They size equipment; they do not design a system, and they are not a substitute for a measurement of your actual room. For a permanent installation engage a qualified integrator, have flown loudspeakers signed off by a structural engineer or certified rigger, and have all electrical work done by a licensed electrician to your local code. As an Amazon Associate we earn from qualifying purchases.