Bose Sub 1 Review: Small Footprint PA Bass Module to 40 Hz

Who Should Buy It

Key Specifications

Overview

The Bose Sub 1 is the smaller of two powered bass modules Bose offers for its L1 Pro portable line array systems, and it also works as a powered subwoofer for other loudspeakers. The product listing describes a compact design built around a 7 inch by 13 inch high excursion RaceTrack driver, with low end range down to 40 Hz and the ability to stack multiple units. It is priced in the upper mid-range tier.

The listing covers the driver, the extension, the connection paths and the stacking features in reasonable detail. It does not publish amplifier power, dimensions, weight, an upper frequency limit or the specific crossover frequencies, so those remain unknown for this review.

This is an editorial research review based on the published specification and general knowledge of compact PA subwoofers. It appears in a studio monitor category because it is a powered low frequency loudspeaker, but its purpose is live reinforcement, and the review judges it on that basis.

Accuracy and Sound Signature

Extension down to 40 Hz is the key published figure. That reach covers the fundamental of most bass guitar notes and the body of a kick drum, which is enough to give a compact column or small powered top a fuller foundation for acoustic, pop and spoken word events. It stops short of the sub bass region that electronic and dance music rely on, where the larger Bose Sub 2 reaches lower.

Bose compares the 7 inch by 13 inch RaceTrack driver to a conventional 12 inch subwoofer. The oval shape packs a large cone area into a narrow cabinet, and high excursion design lets the cone travel further to move more air. The listing does not publish distortion, maximum output or an upper limit to support the comparison, so it stands as a manufacturer claim.

Cardioid Mode gives the Bose Sub 1 a directional character when two or more units are stacked. The listing describes bass directed out front with reduced rear output, which lowers feedback into microphones and keeps the stage cleaner. For live work, that control over where bass goes matters more than the ruler flat response a studio subwoofer would target.

Drivers, Amplification and Power

The driver is the only component the listing describes in detail. A 7 inch by 13 inch high excursion RaceTrack unit is smaller than the 10 inch by 18 inch driver in the Sub 2, and that difference accounts for the 40 Hz rather than 37 Hz extension and for the more compact cabinet. For small rooms and acoustic acts, the smaller driver is a sensible trade.

Amplifier power is not published. The unit is described as powered, confirming an internal amplifier, but wattage, amplifier class and peak versus continuous ratings are absent. Buyers comparing the Bose Sub 1 with other compact powered subwoofers on power will need the manufacturer datasheet.

Output scales by stacking. The listing states that multiple Sub 1 units can be stacked for more bass, each bringing its own amplifier and driver, so a performer can start with one and add a second for larger rooms. That modular approach keeps each box light enough for one person to carry.

Room Fit, Placement and Controls

A compact bass module is placed on the floor near the main speaker, typically at the front of the performance area. The listing emphasizes a compact design with a small footprint but does not publish dimensions or weight, so exact floor space and lifting requirements cannot be stated here.

Controls are simple and practical. An independent sub level control knob lets the performer dial bass up or down during a set without touching the mixer, and selectable crossover modes set the hand off to the main speakers when using the line connections. The listing does not publish the specific crossover frequencies.

Cardioid Mode requires stacking according to the listing description, so a single Bose Sub 1 operates as a conventional omnidirectional subwoofer. Performers who regularly fight bass feedback on small stages gain a real benefit from a second unit and the directional mode.

• Floor placement near the main speaker at the front of the stage
• Independent sub level control knob
• Selectable crossover modes on the line input and output
• Cardioid Mode available when two or more units are stacked
• Dimensions and weight are not published in the listing

Build, Design and Finish

Beyond the compact design and small footprint, the listing does not describe cabinet material, finish, grille, handles or weight. Bose portable PA products have a long track record with working performers, and the build score reflects that record and the design intent rather than published construction details.

A high excursion driver demands a rigid, well braced enclosure to avoid rattles and panel resonance, and the compact size suggests a dense, purposeful cabinet. The listing does not confirm materials or bracing.

No accessories are listed. The SubMatch cable for the L1 Pro32 is described as proprietary, but the listing does not say whether it ships in the box, so L1 Pro32 owners should confirm before ordering.

Connectivity and Inputs

Two connection routes are published. The proprietary SubMatch cable links the Bose Sub 1 to an L1 Pro32 and, according to the listing, combines the two seamlessly, which in general terms means signal and configuration travel together so the crossover between array and subwoofer is handled automatically.

For other powered loudspeakers, a line input and line output with selectable crossover modes let the subwoofer sit between the mixer and the tops. The listing does not specify the connector type, so XLR versus quarter inch cannot be confirmed, and buyers should check before buying cables.

The dual approach keeps the unit useful outside the Bose ecosystem, which is why the connectivity score is reasonable despite the unpublished connector details. L1 Pro32 owners get the simplest integration, and everyone else still has a conventional path.

Setup and Daily Use

With an L1 Pro32, setup is a single SubMatch cable and a level check. With other systems, the mixer feeds the line input, the line output feeds the main speakers, a crossover mode is selected and the level knob is set. The listing describes the process as easy to use, which fits the small control set.

During performances, the level knob is the control that gets used. Rooms vary in how much bass they reinforce, and a quick turn at the subwoofer avoids reworking the mix. Cardioid Mode would be set once during setup when two units are stacked.

Carry weight is the unanswered question. Without published dimensions or weight, this review cannot say how easily the unit travels, but the compact footprint and the smaller driver suggest it is the more portable of the two Bose bass modules. Performers who load in alone should confirm the figure from manufacturer documentation before deciding between the two.

Who Should Buy It

The Bose Sub 1 suits L1 Pro32 owners who want more low end without a large box. Singer songwriters, duos and small acoustic acts playing cafes, restaurants and private events gain fuller bass for guitar, keys and backing tracks while keeping the load out light. Spoken word events and small ceremonies also benefit from the added warmth without the risk of overpowering a quiet room.

Outside the Bose ecosystem, the line connections and crossover modes make it a compact bass option for any powered PA, and event operators who stack two units gain Cardioid Mode for small stages where feedback is a problem.

Performers who play bass heavy music in larger rooms should consider the Sub 2 or a conventional larger subwoofer. Studio owners should not buy it for monitoring, since its controls and tuning serve live sound rather than mixing.

Alternatives Worth Considering

The Bose Sub 2 is the direct step up, with a 10 inch by 18 inch RaceTrack driver and extension to 37 Hz for performers who need deeper and louder bass. The trade off is a larger cabinet and, presumably, more weight, though neither listing publishes those figures.

Conventional compact powered subwoofers from the major live sound brands offer published power ratings and often lower prices, at the cost of a larger round driver footprint. Anyone without an L1 Pro32 should compare those directly since the SubMatch advantage does not apply.

Studio buyers should look at dedicated monitoring subwoofers from manufacturers such as Adam Audio or Neumann, or pair nearfields like the Kali Audio LP-6 or Yamaha HS5 with the matching subwoofer from the same brand.

Verdict

The Bose Sub 1 is a well thought out compact bass module on paper. A 7 inch by 13 inch high excursion RaceTrack driver, 40 Hz extension, SubMatch and line connections, selectable crossover modes, a level knob and Cardioid Mode for stacked units cover what a small act needs.

Unpublished amplifier power, dimensions and weight prevent a complete comparison, and the 40 Hz limit means it is not the choice for sub bass heavy genres. Those gaps hold the score in the mid range.

For L1 Pro32 owners and mobile performers who value portability, it is the sensible bass module. For bigger rooms, the Sub 2 is the better fit, and for studios, neither is the right tool.

Strengths and Limitations

Alternatives to Consider

ADAM Audio T5V Active

Home studio producers who want a matched ADAM Audio 2.1 system with cables included and a subwoofer that publishes real low frequency figures.

Read the ADAM Audio T5V Active review →

JBL 30

Installers and venue owners who need a weather tolerant three-way loudspeaker for 70 V or 100 V distributed systems or a conventional 8 ohm amplifier.

Read the JBL 30 review →

Bose Sub 2

Owners of a Bose L1 Pro32 or other portable powered PA who need deeper, directional bass from a compact module that scales by stacking.

Read the Bose Sub 2 review →

Questions Buyers Ask