Professional Sound

The GSB8 focuses on fidelity, with true subwoofer extension down to 35 Hz and a steep, multiple-slope lowpass filter for superior sound. Its premium-grade, 100-watt subwoofer-band transformer allows use in 70V/100V systems or can be connected for low-impedance direct operation.

This sleek, ultra-low-profile speaker?winner of the RedDot international design award for industrial design excellence?installs underground, with only the audio port visible. It’s designed to withstand the elements: Its chamber is oriented directly below the audio port to prevent accidental damage from landscaping, which can be a problem with side-located chambers. Grab handles allow easy installation and tabs secure the subwoofer to blocks or anchors.

Add the GSB8 to landscape areas of hotels, shopping complexes, restaurants, public spaces, theme parks or any application that demands legendary JBL sound with deep, rich, powerful bass.

This sleek, attractive, compact subwoofer features a down-firing, long-throw 200 mm (8-inch) driver which delivers 115 dB (peak) of clean, powerful bass down to 40 Hz. The built-in low-pass crossover features a dual-slope filter which begins with a gentle slope at the crossover frequency and transitions to a steeper slope at higher frequencies), creating a balanced subwoofer transition regardless of whether the speaker is driven from a full-range or a dedicated subwoofer amplifier channel. The premium-grade dedicated-subwoofer-band multi-tap transformer (and tap selector with 8Ω bypass) allows the Control 89MS to be used in 70V and 100V distributed systems or driven directly at low impedance, for maximum versatility.

The Control 89MS is IP56-rated to withstand the elements, with a tough polyethylene enclosure and a fully-sealed center wiring chamber. The enclosure color extends throughout the cabinet, maintaining color even when scraped or scratched. All external hardware is stainless steel, and the powder-coated stainless steel grille resists rusting.

Features
– 200 mm (8-inch) long-throw driver with polypropylene cone, long excursion TPV surround, and large-diameter 50 mm (2-inch) voice coil on glass fiber former
– 150W Pink Noise Power Handling (300W program) in direct 8Ω setting, plus built-in 80W subwoofer-band 70V/100V multi-tap transformer
– Tough polyethylene enclosure resists abuse from lawn care equipment and the elements
– IP56-rated to withstand the elements, with a tough polyethylene enclosure and a fully-sealed center wiring chamber
– Frequency range: 40 Hz?150 Hz