The Behringer X-Air XR18 is a headless digital mixer designed for mobile, portable, and rackmount applications. Unlike the X32 Compact with its physical control surface and screen, the XR18 has no built-in display or faders. Instead, it’s controlled entirely through the X Air app running on tablets or phones. For churches seeking a compact, lightweight, networkable mixer that doesn’t require expensive control hardware, the XR18 is an excellent choice.
Understanding the XR18’s Architecture
The XR18 is an 18-input networked mixer with 16 mic preamps, six aux buses, four effects engines and a main L/R bus. It connects to your network via Wi-Fi or Ethernet, and you control it through the X Air app running on iPads, Android tablets, or even iPhones. The XR18 itself is a small 1U rackmount unit—about the size of a pizza box—that handles all the audio processing.
Because there’s no physical control surface attached to the mixer, you have complete freedom to place the XR18 wherever audio connections make sense. Many churches mount it in a rack next to their amplifier or in a central equipment location. The wireless app control means your operator can be anywhere in the venue with an iPad, mixing from the audience perspective.
The XR18 is significantly less expensive than the X32 Compact while delivering similar mixing power. The trade-off is that you must provide your own iPad or Android tablet to control it. If you already own a tablet, the XR18 becomes a very affordable mixer option.
Physical Installation and Connections
Unpack the XR18 and place it in a standard 19-inch equipment rack using the included rackmount ears. It occupies just 1 unit of rack space (1.75 inches of height), leaving plenty of room for other equipment. Alternatively, it can sit on a shelf or table; you don’t need to rack it if you don’t have a rack available.
The rear panel has all the audio connections. You have 16 XLR microphone inputs, analog outputs for your main L/R pair (balanced XLR), and USB for optional direct computer connection. The XR18 also has Ethernet and Wi-Fi connectivity for network operation and app control.
Connect your audio sources—microphones, instruments—to the XLR inputs just like you would with any other mixer. Connect your main output to your power amplifier. These are standard audio connections you’ve likely made before.
Powering On
Connect the included power supply to the XR18 and plug it into a standard outlet. The mixer powers on automatically. Look at the front panel—there are a few indicator lights showing power and network status. Unlike the X32, there’s no screen to interact with. All your mixing happens through the app.
Network Setup: Wi-Fi vs Ethernet
The XR18 connects to your network wirelessly via Wi-Fi or through a wired Ethernet connection. For most churches, Wi-Fi is convenient—no cables to run, and you can place the mixer anywhere with power.
To set up Wi-Fi, press the Setup button on the XR18’s front panel (there’s a small Setup button, not immediately obvious). Look for network configuration options. You’ll need to enter your church’s Wi-Fi network name and password. The XR18 connects to your Wi-Fi.
However, Wi-Fi has reliability challenges in live production. Even a brief disconnection can cause issues during service. For production use, Ethernet is more reliable. Run an Ethernet cable from your network switch to the XR18’s Ethernet port. This creates a rock-solid, low-latency connection.
Many churches use a combination approach: Ethernet for the primary mixer setup, and Wi-Fi as a secondary connection for backup tablet control. Or they run a dedicated Ethernet line for the mixer while other devices use Wi-Fi.
Installing the X Air App
The X Air app is available free from the Apple App Store (for iPad) or Google Play (for Android tablets and phones). Search for “X Air” and download the official Behringer app. Installation takes a minute.
Launch the X Air app. It will search your network for any connected XR18 mixers. When it finds your XR18, it displays it in the device list. Tap on your mixer and the app connects. You’re now ready to mix.
The X Air app provides a complete mixing interface replicating all the XR18’s capabilities. You see 16 channel faders, effects, EQ, routing, and all the controls you’d find on a physical console. Everything happens through this touch interface.
Initial Configuration on the App
When you first connect to the XR18, it loads with default settings. All 16 input channels are ready to receive audio and route to the main output. Start by naming your channels for clarity. Tap on each channel and edit its name—“Lead Vocal,” “Kick Drum,” “Guitar,” and so on.
Set the input levels (gain) for each channel just like you would on any mixer. The goal is to set preamp gain so that typical peaks sit around -12 dB on the input meter. This requires listening to each source while watching the app’s metering.
Verify that your channels are routed to the main output (LR). This should be the default, but confirming it prevents surprises. Set your main output level to approximately 0 dB unity gain. The actual volume in the room is controlled by your power amplifier.
Wireless Versus Wired Control
One unique advantage of the XR18 is that you can control it wirelessly from multiple devices simultaneously. Your primary operator uses an iPad from the front of the house. Your streaming engineer uses a separate tablet controlling the same mixer from a different location. Both are controlling the same mixer without interference.
This flexibility is powerful for churches that stream, because the streaming engineer can manage their own mix independently while the house engineer manages the main mix. Both connect to the same XR18 via the same Wi-Fi network.
For maximum reliability during critical moments (live service), use Ethernet for at least one device. If Wi-Fi has any glitches, your wired connection stays solid.
Basic Audio Flow
Once configured, the audio flow is straightforward. Microphone or instrument audio enters an XLR input, travels through the XR18’s digital processing, and exits through the main output to your power amplifier. The X Air app controls how that signal is processed—fader position, effects, EQ, routing.
The beauty of the XR18 is that the processing is identical to the full-size X32. You’re getting professional-grade digital mixing in a compact, affordable package.
Training Volunteers
Because the XR18 has no physical faders, training is slightly different than with physical consoles. Volunteers need a tablet (you provide one or they use their own). They launch the X Air app, the XR18 appears in the app automatically, and they can begin mixing.
The touch interface is intuitive for anyone who’s used a smartphone. Dragging a fader on the screen works like any other app. Most volunteers pick it up quickly.
For scene-based operation (covered in detail in other guides), volunteers can load a pre-configured scene and focus on just adjusting a few key faders. This requires minimal training.
Expandability and Limitations
The XR18 is limited to 16 input channels. If your church grows beyond that, you’d need a larger mixer. However, 16 channels covers most small to mid-sized churches’ needs.
The XR18 doesn’t support Dante networking or advanced digital audio networking. For simple churches, that’s fine. For those planning complex multiroom setups, know that the XR18 has limitations.
The XR18 does support USB audio and multi-track recording, making it suitable for churches that want to record services.
Getting Started This Week
Your first steps: Mount the XR18 (or place it on a shelf). Connect audio cables. Power it on. Download X Air. Connect to the network. Name your channels. Test audio flow to your main speakers.
In your second week: Create your first scene with all channels configured properly. In the third week: Export a backup of your settings.
The XR18 is less intimidating than larger consoles, yet it’s fully capable of professional worship production. Welcome to wireless mixing.