Bose Sub 1 Powered Bass Module Review
By 8mm Audio Experts | Professional Portable PA Subwoofer Review
The Bose Sub 1 Powered Bass Module is designed to extend the low-frequency performance of the Bose L1 Pro portable PA systems. Built specifically for the L1 Pro8, L1 Pro16, and L1 Pro32 line array systems, the Sub 1 delivers powerful bass while maintaining the portability that defines the L1 Pro ecosystem.
Using Bose’s distinctive RaceTrack driver technology and integrated Class-D amplification, the Sub 1 produces deep bass from a compact enclosure that is easier to transport than traditional PA subwoofers.
Bose Sub 1 Specifications
- Driver: 7 × 13-inch high-excursion RaceTrack driver
- Amplifier: 480W Class-D
- Frequency response: 40Hz (−3dB)
- Maximum SPL: 118dB continuous / 123dB peak
- Connectivity: SubMatch input/output, balanced line input/output
- Pole mount: M20 threaded insert
- Compatibility: Bose L1 Pro8, L1 Pro16, L1 Pro32
- Construction: Polypropylene and birch plywood enclosure
- Control: Compatible with the Bose L1 Mix mobile app
RaceTrack Driver Technology
The Bose Sub 1 uses a 7 × 13-inch RaceTrack driver rather than a traditional round woofer. This oval-shaped design allows the subwoofer to produce the same surface area and output as a conventional 12-inch driver while fitting inside a slimmer cabinet.
The benefit is a more compact enclosure that is easier to transport and occupies less stage space without sacrificing bass performance.
SubMatch Single-Cable Connection
One of the key features of the Bose Sub 1 is the SubMatch connection system.
When used with the L1 Pro32, the SubMatch cable carries both power and audio through a single connection. This simplifies setup significantly:
- No separate power outlet required for the subwoofer
- Single cable connection between the L1 Pro32 and the subwoofer
- Automatic crossover and EQ configuration
This streamlined setup allows performers to assemble a complete PA system quickly with minimal cabling.
Cardioid Mode for Directional Bass
When two Sub 1 modules are stacked together, the system can operate in Cardioid Mode.
In this configuration, one subwoofer faces forward and the second faces backward. The system applies signal processing to reduce bass energy behind the stage while directing low frequencies toward the audience.
This feature helps reduce microphone feedback and improves stage monitoring during live performances.
Performance and Use Cases
Acoustic Performers
The Sub 1 is ideal for singer-songwriters, acoustic duos, and small bands. Its 40Hz bass extension provides ample low-frequency support for vocals, acoustic instruments, and light percussion.
Small to Medium Venues
When paired with an L1 Pro system, the Sub 1 can comfortably support performances for audiences of up to around 150–200 people in cafés, small venues, or corporate events.
Portable PA Applications
The compact design and simplified setup make the Sub 1 well suited for performers who transport and install their PA systems without additional crew.
Two-Subwoofer Configuration
The Bose Sub 1 can also be used in a dual-sub configuration.
Stacking two Sub 1 units increases total output and enables Cardioid Mode. This configuration provides higher SPL levels and improved bass coverage for larger venues.
L1 Mix App Integration
The Bose L1 Mix mobile app allows performers to control system settings wirelessly.
Through the app users can adjust:
- Subwoofer level
- EQ settings
- Channel volume
- Reverb and tone presets
This allows performers to fine-tune their sound from anywhere in the venue.
Pros and Cons
Pros
- Compact design with powerful bass output
- RaceTrack driver technology saves space without sacrificing performance
- Simple SubMatch single-cable setup
- Compatible with all L1 Pro systems
- Supports Cardioid Mode when two units are stacked
Cons
- Not designed for extremely bass-heavy DJ setups
- Lower maximum output compared with larger PA subwoofers
- Requires two units for maximum performance in larger venues
Final Verdict
The Bose Sub 1 is a highly portable and efficient bass module designed specifically for the L1 Pro portable PA systems. Its RaceTrack driver design allows it to deliver strong low-frequency performance while remaining compact and easy to transport.
For acoustic performers, small bands, and portable PA setups, the Sub 1 provides the bass extension needed to complete the L1 Pro system without adding complexity or heavy equipment.
