Installed sanctuary systems
100 Seat Church Sound System
Quick answer
A complete 100 seat church sound system costs about $5,534 in equipment. It runs a pair of 1,000 watt powered 12 inch mains, an 18 channel digital rack mixer, two wireless channels, a lectern microphone, wired in-ear monitoring and four ADA assistive listening receivers.
A 100 seat room is about 800 square feet with a throw of roughly 35 feet to the back row, and that short throw is the thing that makes this build affordable: the power calculation comes out around 200 watts per box for speech and a small band, so a pair of 1,000 watt powered cabinets has headroom to spare. Everything below is a real current model with a verified listing, and the total is the sum of those listed prices.
The single most common mistake at this size is buying a console with more channels than the room will ever use and loudspeakers that cannot reach the back wall. Spend on the speakers.
The complete build: $5,534
Loudspeakers and stands
A left and right pair covers a room this size. Mount them on wall brackets or stands so the horn is above head height and aimed at the back row, not at the front pews.
| Item | Why this one | Qty | Price | Buy |
|---|---|---|---|---|
 QSC CP12 12-Inch Compact Powered Loudspeaker | A 1,000 watt powered 12 with a 75 degree pattern, which reaches the back of a 35 foot room without shouting at the front row. | 2 | $1,299.98 | Price |
 Ultimate Support TS-90B Telelock Tripod Speaker Stand Pair | A TeleLock stand pair that holds height without a pin, so a speaker cannot drop if a volunteer leaves the pin out. | 1 | $219.99 | Price |
| Loudspeakers and stands subtotal | $1,519.97 | |||
Console and signal
An 18 channel rack mixer driven from a tablet. No console surface, which is the trade for the price and the footprint.
| Item | Why this one | Qty | Price | Buy |
|---|---|---|---|---|
 Behringer X AIR XR18 18-Channel, 12-Bus Digital Mixer for iPad/Android Tablets with 16 Programmable Midas Preamps, Integrated Wifi Module and Multi-Channel USB Audio Interface | Sixteen programmable Midas preamps and six aux sends, with full scene recall so a rotating volunteer team starts from a known state every week. | 1 | $509.00 | Price |
 Behringer UMC202HD Audiophile 2x2, 24-Bit/192 kHz USB Audio Interface with Midas Mic Preamplifiers | A clean stereo feed from the console into the streaming or recording computer, which is far better than taking audio off a camera microphone. | 1 | $86.90 | Price |
 Whirlwind IMP 2 1-Channel Passive Instrument Direct Box | Passive direct boxes for the keyboard and the acoustic guitar. Nothing to power and very hard to break. | 2 | $158.00 | Price |
| Console and signal subtotal | $753.90 | |||
Microphones
Two wireless channels covers a preacher and a roaming handheld. The headworn system is deliberate: it keeps the capsule a fixed distance from the mouth, worth roughly 6 to 10 dB of usable gain over a lapel.
| Item | Why this one | Qty | Price | Buy |
|---|---|---|---|---|
 Shure BLX14/P31 Wireless Headset Microphone System - H10 Band | A headworn wireless system for preaching. The fixed mouth distance is what stops the feedback a lapel causes in a small live room. | 1 | $379.00 | Price |
 Shure BLX24/SM58 Wireless Microphone System - 14-Hour Battery Life, 300 ft Range, UHF | A wireless handheld on the SM58 capsule, for announcements, testimony and a roaming speaker. | 1 | $389.00 | Price |
 Audio-Technica PRO49QL Propoint Gooseneck Microphone | A quick-mount gooseneck for the lectern that unplugs from its base, so it can be locked away midweek. | 1 | $129.00 | Price |
 Shure SM58 Pro XLR Dynamic Vocal Microphone | Wired vocal microphones for the worship team. The standard for fifty years and every visiting musician already knows it. | 2 | $218.00 | Price |
 Audix OM2 Dynamic Vocal Microphone | A hypercardioid backing vocal microphone, which rejects more of the room than the SM58 for very little more money. | 1 | $99.00 | Price |
 On-Stage MS7701B Euro Boom Mic Stand (For Vocal and Instrument Microphones | Tripod boom stands. Buy one more than you think you need: the spare always gets used. | 4 | $127.80 | Price |
| Microphones subtotal | $1,341.80 | |||
Monitoring
Wired in-ears rather than floor wedges. At this room size a wedge puts more sound into the congregation than into the musician, and the stage volume is the whole problem.
| Item | Why this one | Qty | Price | Buy |
|---|---|---|---|---|
 Behringer P2 Ultra-Compact Personal In-Ear Monitor Amplifier | A belt-clip headphone amplifier fed from an aux send. Forty dollars turns a spare aux into a wired in-ear mix. | 2 | $79.80 | Price |
 Shure SE215 PRO Wired Earbuds - Professional Sound Isolating Earphones, Clear Sound & Deep Bass, Single Dynamic MicroDriver, Secure Fit In Ear Monitor, plus Carrying Case & Fit Kit - Clear (SE215-CL) | Sound isolating earphones with roughly 37 dB of isolation, which is the actual point: the musician hears the mix instead of the room. | 2 | $238.00 | Price |
 Sennheiser HD 280 Pro Headphone | Closed-back headphones at the mix position for checking a channel while the room is loud. | 1 | $85.49 | Price |
| Monitoring subtotal | $403.29 | |||
Rack, power and cable
Leave two rack units empty. A rack packed solid is the reason amplifiers and power supplies fail early.
| Item | Why this one | Qty | Price | Buy |
|---|---|---|---|---|
 Gator Cases Content Creator Series Wooden Studio Rack Case with 15.25" Rackable Depth, 12U (GR-STUDIO-12U) | An open wooden rack that looks acceptable sitting at the back of a sanctuary rather than needing to be hidden in a closet. | 1 | $199.99 | Price |
 Furman M-8Dx Merit X Series 8 Outlet Power Conditioner & Surge Protector with LED Voltmeter & Dual Lights Plus Hosa 18 Gauge Electrical Extension Cable | Filtered power with a voltmeter, so the operator can see the building sag when the air handling starts, which is a real cause of odd faults. | 1 | $199.95 | Price |
 Pig Hog PHM50 Series 50' XLR Microphone Cables 2-Pack | Heavy-jacket microphone cable that survives being coiled and stood on every week by a rotating team. | 1 | $53.99 | Price |
 Amazon Basics XLR Microphone Cable for Speaker or PA System, Recording Studio, All Copper Conductors, 6MM PVC Jacket, 50 Foot | Cheap all-copper runs for fixed positions and spares. A dead cable on a Sunday morning is the most common failure in church audio. | 3 | $59.19 | Price |
 Cable Matters 10Gbps Snagless Shielded Cat 6A Ethernet Cable, 100ft | A shielded network run for the tablet access point, kept away from mains wiring. | 1 | $29.99 | Price |
| Rack, power and cable subtotal | $543.11 | |||
Accessibility
Houses of worship are exempt from ADA Title III, so this is not a legal requirement for most churches. It binds a church that rents its auditorium or runs a school, and most churches choose to meet it anyway.
| Item | Why this one | Qty | Price | Buy |
|---|---|---|---|---|
 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 | A complete FM assistive listening kit whose receiver and hearing-aid-compatible counts already meet the 2010 ADA table for a room this size. | 1 | $972.00 | Price |
| Accessibility subtotal | $972.00 | |||
This is a complete system: if a church buys this list it can hold a service on Sunday. What it does not include is installation labor, wall brackets sized to your structure, conduit, electrical work or permits, which together commonly add 30 to 60 percent on an installed system.
- Room size
- About 800 sq ft
- Throw to back row
- About 35 ft
- Power per speaker
- About 200 W needed
- Console channels used
- 10 of 18
- Wireless channels
- 2
- ADA receivers
- 4, two hearing-aid compatible
- Circuits needed
- 1 dedicated 20 A
Prices were accurate when this list was compiled and change often, so confirm each one before the committee votes. Quantities are multiplied into the total. This total covers equipment only: it does not include installation labor, rigging, conduit, electrical work or permits, which on an installed system commonly add 30 to 60 percent.
Why these loudspeakers and not bigger ones
The temptation at every size is to buy more speaker than the room needs, on the theory that headroom is free. It is not: a larger cabinet in a small room has a wider pattern than the seating, so more of its output lands on the side walls and comes back as reverberation. That reads as muddy, and the usual response is to turn it up, which makes it worse.
A 75 degree pattern across a 100 seat room is close to right. If your room is unusually wide and shallow, the wider K8.2 with its 105 degree pattern is the better geometry even though it is a smaller box. Check your own room in the coverage angle calculator.
What it costs to run, not just to buy
Beyond the purchase, a 100 seat system costs roughly $150 to $400 a year in batteries, cable replacement and consumables, and the wireless batteries are most of it.
| Item | Typical yearly cost | Note |
|---|---|---|
| Alkaline batteries, 2 wireless channels | $60 to $120 | Two cells per transmitter per service, three services a week |
| Rechargeable packs instead | $0 after about 18 months | Pays for itself, and removes the Sunday morning battery panic |
| Cable replacement | $40 to $100 | Budget one or two microphone cables a year on a volunteer team |
| Earphone tips and spares | $20 to $40 | Foam tips are consumable and hygiene matters on shared in-ears |
| Assistive listening batteries | $30 to $60 | Four receivers, used weekly |
Switching the wireless transmitters to rechargeable packs is the single change that pays back fastest and removes the most Sunday morning stress.
What you can skip
Skip the subwoofer. A 100 seat room with speech and a small band does not need one, and adding one is how a small room starts sounding muddy rather than full.
Skip the second wireless lapel. Two channels is genuinely enough at this size, and every extra wireless channel is another battery to charge, another frequency to coordinate and another thing to fail. Buy a spare capsule instead of a spare system: a dead capsule is the most common wireless failure and a spare lavalier capsule costs a fraction of a second system.
Skip the graphic equalizer. The XR18 has parametric EQ on every channel and on the output. A separate rack EQ at this size is a box that does nothing the console cannot.
What to upgrade first
Acoustic treatment, before any of it. If the room rings, nothing on this list fixes it. A 100 seat sanctuary with hard walls and a wood floor can have a reverberation time over 1.5 seconds, which destroys intelligibility no matter how good the loudspeakers are. Run the numbers in the acoustic treatment calculator and spend there first.
Then the console, when the band grows. The XR18’s sixteen preamps are the ceiling here. A drum kit alone can use five. When the input list passes about fourteen, move to the X32 Rack or the CQ-18T, which keeps a touchscreen on the box itself so the service still runs when somebody forgets the tablet.
Frequently asked questions
How much does a sound system for a 100 seat church cost?
About $5,534 for the equipment on this list, which is a complete system including wireless, monitoring, a rack and assistive listening. Installation labor, mounting hardware, conduit and electrical work are not included and commonly add 30 to 60 percent on top. A speech-only version without the band microphones and in-ears comes in considerably lower.
How many watts do I need for a 100 seat church?
About 200 watts per loudspeaker for speech and a small band, working from a 35 foot throw, a 96 dB sensitivity cabinet and 10 to 12 dB of peak headroom. The 1,000 watt cabinets in this build are well above that, which is the right direction to be wrong in. Run your own room through the amplifier power calculator rather than using a watts-per-seat rule of thumb, because sensitivity and throw matter more than the seat count.
Do I need a subwoofer in a 100 seat church?
For speech, hymns and a piano, no. For a full band with a kick drum and bass guitar, a single compact subwoofer adds weight the 12 inch mains cannot produce, but in a room this small it also excites low-frequency room modes easily. Treat it as an upgrade you make after you have heard the system without one, not as part of the initial purchase.
Can two volunteers run this system?
One can, which is the point of choosing a console with scene recall. Save a scene for each service type, teach the volunteer to recall it and adjust only the faders, and the system starts from a known good state every week. The second person is for the livestream, not for the audio.
Should we buy powered speakers or passive ones with an amplifier rack?
At this size, powered. There is less to specify, nothing to match and no amplifier rack to buy, and the cost difference is small. Passive systems win in larger rooms and in permanent installs where every amplifier should sit in one lockable rack and where flown cabinets make running mains power to each speaker position awkward.
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.