The Tannoy SAT SUB-WH is a compact, self-powered subwoofer engineered to provide extended low-frequency performance in commercial background music and paging systems. Designed for wall-mount installation, its discreet white enclosure allows for flexible placement in retail environments, restaurants, hotels, and offices where space is at a premium and aesthetic integration is important. Unlike larger, floor-standing subwoofers, this model is optimized to deliver a solid low-end foundation without dominating the physical space, making it an ideal companion to full-range or satellite loudspeakers in distributed audio systems. Its powered design incorporates a dedicated internal amplifier, which simplifies system setup by eliminating the need for an external amplifier channel and ensuring optimal matching between the driver and its power source.

The subwoofer is built around a long-excursion 6.5-inch driver housed in a bass-reflex enclosure tuned by a front-firing port. This design enhances low-frequency efficiency and extension, allowing the unit to reproduce frequencies down to 45 Hz with clarity and impact. The integrated amplifier provides ample clean power to drive the driver, with comprehensive protective circuitry to ensure reliable operation under demanding conditions. Input connectivity is versatile, featuring both line-level and high-level (speaker-level) inputs. The high-level inputs allow the subwoofer to be seamlessly integrated into systems where it is being fed from the same amplifier powering the main speakers, while line-level inputs connect directly to a preamp or processor output.

Control is provided via a rear-panel set of rotary knobs for adjusting volume level, low-pass crossover frequency, and phase (0/180 degrees). These controls enable installers to fine-tune the subwoofer's integration with the main loudspeakers, ensuring a smooth, cohesive transition between the satellites and the low-frequency effects. The Tannoy SAT SUB-WH represents a practical and effective solution for enhancing the audio experience in commercial settings, adding warmth, presence, and fullness to music and impact to announcements without the complexity or footprint of larger subwoofer systems.