Why Does the Church Sound Like That? (And What We’re Doing About It)
If you’ve ever sat in the back of St. Stanislaus and wondered whether Father was speaking English, Spanish, or more likely ancient Sumerian, you are not alone. And if you’ve sat in the front and needed earplugs, you are also not alone. Our current sound system has, shall we say, a personality. Specifically, it has the personality of someone who shouts at people nearby and mumbles at people far away — which, come to think of it, describes most of us on Monday mornings.
We recently hired Spinnaker Multimedia Solutions to study the problem seriously, and they did something called acoustic modeling; essentially building a computer simulation of our church and testing six different sound system configurations before touching a single wire. The results were illuminating, in an audiovisual rather than spiritual sense.
What the Documents Show
The three documents linked below tell the story. Here’s a plain-English guide to reading them.
The Current System shows our existing four Renkus Heinz ICLX loudspeakers at work. The colored heat map — think weather radar, but for sound — tells the tale immediately. Colors range from deep blue (quieter) through green and yellow to red (loudest). Our current system produces a wide rainbow across the seating area, which sounds festive but is actually a problem. Some seats receive sound at around 94 decibels; others get blasted at 101 decibels. That seven-decibel swing might not sound like much, but in acoustic terms it’s the difference between “I can follow the readings” and “I wonder what’s for lunch.” Ironically, the front pews near the sanctuary — the seats of the devout early arrivers — actually receive less sound coverage than the middle of the church. Virtue, apparently, is its own reward.
The Proposed System shows what happens when we add four more matching loudspeakers (for a total of eight) plus two subwoofers on the floor. The heat map models nearly the entire seating area in a consistent green-to-cyan, meaning virtually everyone hears sound at roughly the same level; between 101 and 106 decibels, a spread of only about five decibels. The speakers are also steerable array units, meaning the sound can be electronically aimed at the congregation rather than bouncing randomly off our beautiful (but acoustically indifferent) ceiling and walls. Less echo. Less muddy reverb. Less hearing strain. More “Fr. Brady actually makes some sense.”
The Sound System Comparison is the technical scorecard evaluating all six configurations tested. The engineers compared systems from three manufacturers (Renkus Heinz, EAW, and JBL) in various quantities and locations. At the bottom of the chart are two key measurements that directly address the experience many of you have described:
- Alcons (Articulation Loss of Consonants) — measures how much consonant clarity is lost due to echoes, reflections, and phase issues. Lower is better. The recommended system scores 7.62 (best among all options tested).
- STI (Speech Transmission Index) — a composite score (0-1 scale) factoring in reverberation, background noise, and signal degradation. Higher is better. The recommended system scores 0.586 (again, best among options).
These aren’t just abstract numbers. They quantify the difference between “I understood that” and “Did he say ‘blessed’ or ‘ressed’?”
The total investment for the loudspeaker project is $45,751.
“Wait, We Already Have Steerable ICLX Speakers — Why Add More?”
The current 4 ICLX speakers are excellent units, but four speakers simply can’t create enough distinct coverage zones to properly serve a long, narrow nave with a high vaulted ceiling and balcony. With only 4 units, each speaker has to cover too wide an area, which means sound inevitably hits walls and ceiling, creating the reverb and echo that makes speech muddy.
The acoustic modeling shows the current system covers only 31% of the seating area within optimal range — meaning 69% of seats are either too quiet or receiving mostly reflected sound rather than direct sound. Adding 4 more speakers creates 8 precisely aimed beams that can put sound directly on people rather than on plaster, increasing optimal coverage to 71% and dramatically reducing the echo that smears intelligibility. Think of it as the difference between 4 floodlights and 8 spotlights — same technology, but enough units to actually shape coverage to the room.
“Why Not Just Put Speakers Down the Side Aisles?”
Good question. A distributed system (speakers every 10-15 feet along the walls) would solve the volume variance problem, but it creates two new ones. First, sound would arrive at your ears from multiple speakers at different times — the speaker above you fires, then the one 15 feet away arrives a split-second later, creating an echo effect that makes speech muddy. Second, and more importantly for a church, the sound becomes disembodied from the liturgical action. When the lector proclaims the Word, you should hear it coming from the ambo, not from a speaker three rows behind you. The steerable array system gives even coverage while preserving directional coherence — everyone hears clearly, and the sound comes from where it should: the sanctuary.
The Two Factors in Poor Church Sound
Understanding what makes church acoustics difficult helps explain why the solution matters. There are two distinct problems:
- Sound Level Distribution — Ideally, everyone should hear at roughly the same volume. The smaller the range in decibels, the better. Our current 7-decibel swing is the problem the new speakers directly address.
- Time Delay — When sound waves arrive at your ear at different times (direct sound from the speaker, plus reflections bouncing off walls and ceiling), they create muddiness. Your brain can’t distinguish the original consonants from the echoes. This is what the Alcons score measures, and it’s why steerable arrays matter — they minimize reflections by putting sound precisely where people sit rather than spraying it everywhere.
All the speaker systems tested (Renkus Heinz, EAW, and JBL) offered some form of multiple directional narrow-focus speakers precisely because this is the only way to control where sound goes in a space with hard reflective surfaces. Getting 100% optimal coverage isn’t something any vendor could guarantee without pushing the price to unaffordable levels. Our church has too many hard surfaces (brick, plaster, wood) and acoustic nooks (balcony overhang, side aisles, architectural details) that inevitably create some challenging zones. The goal is to maximize even, clear coverage for as many seats as possible within a reasonable budget.
Looking Further Ahead: The ultimate solution would involve acoustic treatment — placing sound absorption panels along the back wall and applying sound-absorbing material to portions of the ceiling to reduce the reflections that cause time delay issues. This could be done in stages as a future project, but it represents a separate investment beyond the speaker upgrade. First, we get the sound aimed correctly. Then, if needed, we can reduce the surfaces that bounce it back.
Part Two: Microphones, Mixing, and the Choir Loft
A second project addresses the other half of the sound equation — not just whether you can hear something, but whether what you’re hearing was properly captured and mixed in the first place.
Currently, managing sound at St. Stanislaus requires someone physically anchored to the audio rack making real-time adjustments with equipment not designed for our specific needs. The 11:00am Mass, the Spanish Mass, and our various musical ensembles all have different audio requirements, and our current setup handles this with approximately the same elegance as an elephant performing Tchaikovsky’s ballet.
The solution is an Allen & Heath SQ Rack digital mixing console — a professional-grade 48-channel system controllable wirelessly via iPad from anywhere in the church. Critically, presets can be saved for each Mass and ensemble, so one group’s settings don’t become the next group’s audio archaeology project.
The choir loft gets serious attention as well. Four AKG C214 studio-quality microphones — the same capsule design used in professional recording studios — would be installed for the choir, along with two dedicated microphones for those joining Mass via live-stream. The choir and instrumentalists would also receive two Tannoy column array loudspeakers for stage monitoring, meaning musicians can finally hear themselves and each other clearly rather than performing entirely on faith (admirable as a spiritual disposition; sub-optimal as a rehearsal strategy). A dedicated iPad in the loft allows the music director or volunteer to make adjustments without semaphore signals to the sacristy.
The second project totals $39,224, with labor accounting for a substantial portion given the complexity of running network and audio cabling throughout the building.
The Bottom Line in Non-Engineer Terms
The new loudspeaker system means two things you’ll notice immediately. First, consistent volume: whether you’re in the front pew or the back corner near the baptismal font, you’ll hear at roughly the same level — no more sonic lottery when choosing your seat. Second, clearer speech: steerable technology directs sound toward people rather than toward the ceiling, which means less echo and dramatically better word intelligibility.
The microphone and mixer project means that every Mass — regardless of which choir is singing, which language the liturgy is celebrated in, or how many instruments are involved — receives professional, responsive audio management. For those joining us online, it means a live-stream that actually sounds like a church rather than a phone call from a parking garage.
For a community that gathers to hear — the Word proclaimed, the homily preached, the prayers offered in common, the music lifted to God — these are not minor upgrades. They are, in the most literal sense, about making sure what happens here can actually be received.
We are grateful to the parishioners whose generosity makes this stewardship possible, and we look forward to the day when “I couldn’t hear a thing” is no longer the most common comment in the parking lot.
Questions? Contact the parish office. Documents referenced above are linked below.
