Streaming your church service through OBS Studio with audio from your Mackie ProFX16v3 is simpler than many churches realize. The mixer’s USB interface provides clean audio directly to your streaming computer, and OBS’s straightforward configuration makes setup quick. This guide walks you through the complete process.
USB Audio Fundamentals
The Mackie ProFX16v3’s USB interface transmits your mixed stereo output to your computer. Unlike larger digital mixers that might send multiple independent audio channels, the ProFX16v3 sends your main mix. This simplicity is actually an advantage for small churches—one mix serves both your PA system and your streaming audience.
This direct connection eliminates intermediate devices. You don’t need a separate audio interface. USB cable from mixer to computer is all that’s required.
Physical USB Connection
Connect a USB cable from the ProFX16v3’s rear panel USB port to an available USB port on your streaming computer. Use a quality cable, preferably not longer than 15 feet. USB 3.0 ports (usually blue) work more reliably than USB 2.0 for audio applications.
Power on the ProFX16v3 and allow it to boot. Your computer should recognize the mixer as a USB audio device within a few seconds. If it doesn’t appear, try a different USB port on your computer.
Installing Required Drivers
On Windows, you might need to install Mackie ProFX16v3 drivers. Visit Mackie’s website, download the latest drivers for your operating system, and install them. Restart your computer after driver installation. After restart, the mixer should appear in your audio input devices.
On Mac, the ProFX16v3 usually works without additional drivers, though checking Mackie’s website for the latest macOS compatibility is recommended.
Verifying USB Recognition
In your computer’s sound settings, verify that the Mackie ProFX16v3 appears in your audio input devices. On Windows, open Sound Settings and look for the mixer in the input device list. On Mac, open System Preferences > Sound and verify it appears in the input list.
If the mixer still doesn’t appear, try a different USB cable. Worn or defective cables are a common cause of device recognition issues.
Installing OBS Studio
Download OBS Studio from obsproject.com and install it on your streaming computer. OBS is free, open-source software that handles video and audio capture for streaming to multiple platforms simultaneously.
Launch OBS and you’ll see the main interface. You’ll configure audio first, then add video sources if you have cameras or graphics to display.
Configuring OBS Audio Input
In OBS, navigate to Settings > Audio. Under the Devices section, you’ll see a Microphone dropdown (or sometimes called “Primary Audio Input”). Click this dropdown and select the Mackie ProFX16v3 from the list of available audio devices.
Once selected, OBS begins monitoring audio from your mixer. You should see the OBS audio meter respond when you speak into your microphones or adjust faders on the ProFX16v3.
Setting Optimal Audio Levels
In OBS’s Audio Mixer panel at the bottom of the window, you’ll see your audio level meter. Speak into your microphones on the ProFX16v3 and adjust the input level slider in OBS until your meters show average levels around -18 dB with occasional peaks reaching -12 dB.
This level range provides professional-grade audio with adequate headroom. If your audio seems too quiet in OBS, first adjust the ProFX16v3’s main output fader. If it’s still too quiet after that, then boost the input level slider in OBS.
Alternatively, you can handle all level adjustments on the ProFX16v3 itself, keeping your streaming computer’s input at unity gain. This approach—managing levels at the source rather than in software—produces cleaner results.
Testing Audio Before Streaming
Before your first actual livestream, run a complete test. Start OBS, ensure your ProFX16v3 is feeding audio, and watch the meters while speaking into your microphones. Do audio levels look appropriate? Does the meter respond smoothly without dropouts?
Do a test stream to a private YouTube or Facebook stream. Let it run for several minutes while your worship team practices music and speaking. Listen to how the audio sounds on the receiving end. Does anything sound distorted, too quiet, or strange?
This test rehearsal reveals any issues before they affect your actual broadcast audience.
Creating Your OBS Scene
In OBS, create a new Scene for your broadcast. Add a Video Capture Device source if you have a camera pointed at your pulpit or worship area. If you don’t have a camera, add a color background or graphics.
Your Mackie audio is already configured globally through the audio settings, so you don’t need to add audio sources individually within the scene. Audio flows from your mixer to OBS automatically based on the global device settings.
Handling Audio Dynamics During Services
Your ProFX16v3 has compression on each channel. Use this to smooth out vocal performance variations. Gentle compression (not too extreme) makes voices sound more consistent while still preserving natural performance dynamics.
Also use the EQ capabilities on each channel. A slight presence peak around 3-4 kHz can enhance vocal clarity for streaming listeners using headphones. A gentle cut below 100 Hz prevents excessive low-end buildup.
Multi-Platform Streaming
OBS can stream to multiple platforms at once with the free Multiple RTMP Outputs plugin, or by sending one stream to a relay service like Restream. When you start streaming, the same video and audio goes to every platform.
The ProFX16v3 simply provides audio to OBS. OBS handles the complexity of sending that audio to multiple destinations.
Local Recording for Archive
OBS can simultaneously stream to the internet and record locally to your computer. Enable Local Recording in OBS’s file settings. Your stream gets recorded while also broadcasting live.
These local recordings become valuable archives. You can edit them for podcast production, create highlight clips for social media, or maintain them as ministry archives that members can access later.
Troubleshooting Audio Issues
If audio cuts in and out during streaming, check your USB cable first. Reseat it firmly on both ends. If dropout persists, try a different USB cable—defective cables commonly cause intermittent audio issues.
If audio sounds distorted, you’re probably feeding OBS too much level. Reduce the input level slider in OBS or reduce the ProFX16v3’s main output fader. Professional audio should never sound distorted.
If audio seems very quiet to your streaming audience, increase the ProFX16v3’s main output fader. If it’s still too quiet, increase the input level slider in OBS. But generally, audio problems come from too much level rather than too little.
Network Considerations
Your USB audio connection is local to your computer—it doesn’t depend on internet connectivity. Even if your internet connection is poor and causes video streaming problems, your audio will remain unaffected.
This separation between local audio quality and internet streaming quality means temporary internet hiccups don’t cause audio dropouts. Your online viewers might experience video buffering, but your audio stays clean and stable.
Building Mixing Discipline
Develop habits that support streaming quality. Always test your audio levels before services begin. Speak into each microphone, verify that OBS meters are responding appropriately, and make any adjustments needed before going live.
Keep notes about typical mixing levels. If your lead vocal is typically set to -8 dB on the ProFX16v3, write this down. These notes help you recreate consistent mixing week to week, ensuring your streaming audience experiences consistent audio quality.
Your Mackie ProFX16v3 with OBS now provides complete livestreaming capability. This budget-friendly, straightforward approach enables small churches to reach online audiences with professional-quality audio while maintaining familiar analog mixing simplicity.