Bose Professional AudioPack Pro S4B Surface-Mount Loudspeaker System, Black

The Bose Professional AudioPack Pro S4B is a complete, ready-to-install commercial audio system that brings the signature sound quality of Bose Professional to retail stores, restaurants, cafes, offices, salons, fitness studios, and other small business spaces. Each pack pairs four black surface-mount loudspeakers with a factory-matched integrated zone amplifier, delivering even background music and clear paging coverage straight out of the box, with no complicated component matching or guesswork required.

At the heart of the system are four FreeSpace FS2SE surface-mount loudspeakers, each built around a full-range 2.25-inch driver tuned for natural, intelligible voice reproduction and rich background music. Their wide 145 x 140 degree nominal coverage means fewer speakers are needed for consistent, room-filling sound, while weather-resistant IP55-rated enclosures made from UV fade-resistant engineered plastic make them equally suited to indoor walls or covered outdoor patios. Combined 70V/100V and 16-ohm low-impedance operation gives installers maximum flexibility across zones and venues.

Driving the loudspeakers is the FreeSpace IZA 190-HZ integrated zone amplifier, which combines signal processing, source routing, paging, and 90 watts of amplification in a compact half-rack chassis. With included U-bracket mounts for flexible aiming, removable Bose Professional logos for a clean, branded-or-discreet look, and QR-code-guided setup, the AudioPack Pro S4B is engineered for fast, professional installation and dependable, long-term commercial performance.

Features

• Complete, ready-to-install commercial background music and paging system
• Four (4) black FreeSpace FS2SE surface-mount loudspeakers, factory-matched to the included amplifier
• FreeSpace IZA 190-HZ integrated zone amplifier with signal processing, routing, paging, and 90W output
• Full-range 2.25-inch driver delivers clear voice and music reproduction
• Wide 145 x 140 degree nominal coverage for even, room-filling sound from fewer speakers
• Weather-resistant IP55-rated loudspeakers for indoor or covered-outdoor installations
• Combined 70V/100V and 16-ohm low-impedance operation for installation flexibility
• UV fade-resistant engineered-plastic enclosures with removable Bose Professional logos
• Adjustable U-bracket mounts allow horizontal or vertical orientation with pitch and yaw aiming
• QR-code-guided installation for fast, professional setup

Technical Specifications

• System: 4 x FreeSpace FS2SE loudspeakers + 1 x FreeSpace IZA 190-HZ amplifier
• Loudspeaker driver: 1 x 2.25 in (57 mm) full-range
• Frequency response (-10 dB): 83 Hz - 19 kHz
• Sensitivity: 87 dB (SPL/1W @ 1m)
• Maximum SPL: 99 dB @ 1 m
• Power handling: 16 W continuous / 64 W peak
• Nominal impedance: 16 ohms (transformer bypass)
• Nominal coverage: 145 deg horizontal x 140 deg vertical
• 70V transformer taps: 1, 2, 4, 8, 16 W (plus bypass)
• 100V transformer taps: 2, 4, 8, 16 W (plus bypass)
• Ingress protection: IP55 (loudspeakers)
• Loudspeaker dimensions: 7.1 x 4.4 x 4.5 in (H x W x D)
• Loudspeaker weight: 3.2 lb each
• Amplifier output: 90 W (70V / 100V)
• Amplifier format: 1U high, half-rack wide
• Mains voltage: 100-240 VAC, 50/60 Hz
• Color: Black
• Warranty: 5 years

What's Included

• 4 x FreeSpace FS2SE surface-mount loudspeakers (black)
• 1 x FreeSpace IZA 190-HZ integrated zone amplifier
• U-bracket mounts for the loudspeakers
• Weather-resistant input covers
• Removable Bose Professional logos
• QR-code installation guide / documentation