1. Introduction
The Bose L1 Pro32 is a portable line array PA system designed for medium-to-large-sized venues and events. It features a 32-driver articulated line array for wide 180-degree horizontal sound coverage and clear audio reproduction. The system is modular, combining with either the Bose Sub1 or Sub2 subwoofer (sold separately) for enhanced bass response. A built-in multi-channel mixer provides essential audio controls, including EQ, reverb, and phantom power, alongside Bluetooth streaming capabilities and access to ToneMatch presets via the L1 Mix app.
2. What's Included
- L1 Pro32 speaker array
- SubMatch Cable
- Built-in mixer
Note: Bose Sub1 or Sub2 modular subwoofers are not included and must be purchased separately for full system functionality.
3. Setup Instructions
The L1 Pro32 system is designed for quick and easy assembly. Follow these steps to set up your PA system:
- Position the Subwoofer: Place your Bose Sub1 or Sub2 subwoofer (sold separately) on a stable, flat surface in your desired location. The subwoofer serves as the base for the L1 Pro32 array.
- Connect the L1 Pro32 Array: Carefully align the base of the L1 Pro32 column array with the receptacle on top of the subwoofer. Gently lower the array until it securely locks into place. The modular design ensures a stable connection.
- Power Connection: Connect the power cable to the subwoofer's power input and then to a suitable AC power outlet.
- SubMatch Cable: Use the included SubMatch Cable to connect the L1 Pro32 array to the subwoofer. This cable transmits both audio and power to the array.

Figure 1: L1 Pro32 array connected to a Bose subwoofer. The array slots directly into the subwoofer's top receptacle.
4. Operating the System
The L1 Pro32 features an integrated mixer for easy control of your audio sources.
4.1 Mixer Controls
The rear panel of the subwoofer houses the mixer controls:
- Volume, Treble, Bass, Reverb: Each input channel has dedicated rotary controls for these parameters.
- Input Channels: The mixer includes two combo XLR-1/4" phantom-powered inputs, a 1/4" input, and a 1/8" (3.5 mm) auxiliary input.
- Mute Buttons: Each input channel has a mute button to quickly silence a specific source.
- Bluetooth Pairing: A dedicated button allows for easy Bluetooth streaming from compatible devices. Press and hold to initiate pairing mode.
- System EQ Presets: Select between optimized EQ presets for different applications: Live Music, Recorded Music, and Speech.
- Phantom Power: Available for condenser microphones on the XLR inputs.

Figure 2: Top panel of the Bose Sub2 subwoofer showing integrated mixer controls for volume, treble, bass, and reverb, along with various input options.
4.2 Bluetooth Connectivity
To connect a Bluetooth device:
- Ensure the L1 Pro32 system is powered on.
- Press and hold the Bluetooth button on the mixer panel until the indicator light begins to flash.
- On your mobile device, navigate to Bluetooth settings and select the Bose L1 Pro32 from the list of available devices.
- Once connected, the indicator light will turn solid. You can now stream audio wirelessly to your system.
4.3 L1 Mix App
The intuitive L1 Mix app provides wireless control over your system from your smartphone. Download the app from your device's app store to access system EQ, ToneMatch presets, volume, tone, and reverb settings remotely.
5. Key Features
- Portable Design: Ideal for small to medium venues, offering easy transport and setup.
- Wide Coverage: Straight-shape extended-frequency line array with 32 articulated 2" neodymium drivers provides 180-degree horizontal coverage for consistent tonal balance.
- Modular Subwoofer Compatibility: Works seamlessly with Bose Sub1 or Sub2 subwoofers (sold separately) featuring RaceTrack drivers for powerful bass in a compact form factor.
- Integrated Mixer: Built-in multi-channel mixer with two combo XLR-1/4" phantom-powered inputs, 1/4" and 1/8" (3.5 mm) aux input, plus Bluetooth streaming.
- ToneMatch Presets: Access a full library of ToneMatch presets for optimized sound for various instruments and microphones.
6. Technical Specifications
| Specification | Value |
|---|---|
| Model Name | L1 Pro32 |
| Speaker Type | Line Array |
| Special Feature | Portable |
| Compatible Devices | Smartphone |
| Color | Black |
| Item Weight | 24.9 pounds (11.3 Kilograms) |
| Product Dimensions | 22.56 x 13.82 x 83.46 inches |
| Power Source | Corded Electric |
| Connectivity Technology | Auxiliary, Bluetooth |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Range | 100 Meters |
| Speaker Maximum Output Power | 17 Watts |
| Mounting Type | Floor Standing |
7. Care and Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior surfaces of the L1 Pro32 array and subwoofer. Avoid using abrasive cleaners or solvents.
- Storage: When not in use, store the system in a dry, temperature-controlled environment. Disassemble the array from the subwoofer for compact storage and transport. Consider using protective covers or bags (sold separately) to prevent dust and damage.
- Handling: Always handle the system components with care. Avoid dropping or subjecting them to strong impacts.
8. Troubleshooting
If you encounter issues with your L1 Pro32 system, refer to the following common troubleshooting steps:
- No Sound:
- Ensure the system is powered on and connected to a working power outlet.
- Verify that all audio cables (SubMatch, input sources) are securely connected.
- Check the volume levels on the mixer and your audio source.
- Ensure the input channel is not muted.
- Poor Sound Quality:
- Check the quality of your audio source and cables.
- Adjust the Treble and Bass controls on the mixer.
- Experiment with different System EQ presets (Live, Music, Speech) to match your content.
- Ensure input levels are not clipping (indicated by red lights on the mixer).
- Bluetooth Connectivity Issues:
- Ensure your mobile device is within the 100-meter Bluetooth range.
- Try unpairing and re-pairing your device.
- Ensure no other devices are actively connected to the L1 Pro32 via Bluetooth.
9. Warranty and Support
The Bose L1 Pro32 Column Array PA System comes with a Limited Warranty. For detailed warranty terms and conditions, please refer to the warranty documentation included with your product or visit the official Bose website.
For technical support, product registration, or service inquiries, please visit the Bose support website or contact their customer service department. Keep your proof of purchase for warranty claims.
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