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AudioPack Pro S4B


AudioPack Pro


AudioPack Pro is a background music and paging solution that brings the signature sound and quality of Bose Professional to your business—all in one convenient, ready-to-install package.

Inside the box are a Bose Professional amplifier and loudspeakers, specifically matched to elevate the customer experience with premium audio. The ideal mix of performance and value, this solution delivers exceptional durability, clean design, and ease of installation.

The system features FreeSpace FS, our trusted line of in-ceiling and surface-mount loudspeakers. The perfect mix of performance and value, they combine durability, clean design, and ease of installation. FreeSpace FS loudspeakers deliver remarkably consistent tonality, clear voice reproduction, and smooth response. Plus, their pleasing aesthetic blends into any environment.


  • FreeSpace FS loudspeakers provide durability and performance, pleasing aesthetics, and ease of installation—with remarkably consistent tonality

  • FreeSpace IZA 190-HZ integrated zone amplifier delivers premium sound, simple setup, easy daily operation, and the flexibility to expand when more loudspeakers are required

  • Simple instructions available via QR code on the box that guide you through the install process—with professional tech support available if needed

  • Three different system packages for flexibility to meet your specific requirements

  • Hear the best of both music and voice with transducers that offer clear voice reproduction and smooth response for background music

  • Modern aesthetics and practical features blend with many room layouts. Available in black and white and includes removable logos for a cleaner, unbranded appearance.

  • Public safety support—all FreeSpace FS models are UL 1480 ULC-S541-listed for use in fire alarm and signaling systems in life safety applications


Designed for a wide range of applications, including:

  • Small businesses

  • Cafés and coffee shops

  • Retail stores

  • Restaurants

  • Offices

  • Salons and spas

  • Schools


Technical Specification

  • Current Draw, Inrush

  • 7.6 A at 120 VAC, 60 Hz / 13.9 A at 230 VAC, 50 Hz

  • Mains Connector

  • IEC C14 inlet

  • Mains Voltage

  • 100–240 VAC (±10%), 50/60 Hz

  • Protections

  • High temperature, short circuit

  • Power Consumption

  • 15 W idle, 200 W maximum

  • Controls, Front Panel

  • (1) power switch, (1) input selection switch, (1) treble knob, (1) bass knob, (1) mic/line gain knob, (1) master level knob

  • Controls, Rear Panel

  • Amplifier Mode DIP switch, Loudspeaker EQ preset selector, Input Gain (A/B/Page mic), Output trim

  • LED Status Indicators

  • (1) power LED, (1) input clip LED

  • A/D and D/A Conversion

  • 48 kHz / 24-bit

  • Audio Latency

  • 10.4 ms (analog input to analog output)

  • Presets

  • High-pass filter, Bose Professional loudspeaker presets (FreeSpace FS2C/FS2P/FS2SE/FS4CE/FS4SE)

  • Processing Functions

  • Loudspeaker EQ, Opti-Voice EQ (paging), Dynamic EQ (low-end compensation)

  • Colors

  • Black (similar to RAL 9005)

  • Cooling System

  • Natural convection

  • Enclosure Material

  • Engineered plastics, highly UV fade-resistant

  • Grille Material

  • Perforated steel, powder-coated finish, tamper-resistant design

  • Ingress Protection

  • IP55 (loudspeakers only)

  • Logo

  • Removable

  • Net Weight

  • 3.2 lb (1.4 kg), loudspeaker with grille & bracket (single) / 7.0 lb (3.2 kg), amplifier

  • Operating Temperature

  • -25 °C to 70 °C (-13 °F to 158 °F)

  • Rack Spaces

  • 1 RU high, half rack wide

  • Frequency Range (-10 dB)

  • 83 – 19,000 Hz

  • Coverage, Horizontal

  • 145°

  • Maximum SPL at 1 m

  • 99 dB

  • Nominal Impedance

  • 16 Ω (transformer bypass)

  • Power Handling, Continuous

  • 16 W

  • Power Handling, Peak

  • 64 W

  • Sensitivity (SPL/1 W at 1 m)

  • 87 dB

  • Transformer Taps, 100V

  • 2, 4, 8, 16 W, bypass

  • Transformer Taps, 70V

  • 1 W, 2 W, 4 W, 8 W, 16 W, bypass

  • Coverage, Vertical

  • 140°

  • Driver Protection

  • Recommended high-pass protection 85 Hz with minimum 24-dB/octave filter

  • Low-Frequency Transducer Quantity and Size

  • 1 × 2.25 in (57 mm) woofer

Product codes

  • 888478-1110
  • AudioPack Pro S4B, black, 120V, North America
  • 888478-2110
  • AudioPack Pro S4B, black, 230V, Europe
  • 888478-2120
  • AudioPack Pro S4B, black, 230V, UK
  • 888478-5120
  • AudioPack Pro S4B, black, 240V, Australia

Warranty Period

  • 5 years

Installer step by step

Watch the video

If you’re new to commercial sound systems, you may have questions about best practices and where to find the information you need. To help, we’ve created an installer-friendly online instructional webpage. It features a seamless, step-by-step workflow for designing, configuring, and installing your AudioPack Pro system—all in one convenient place.

Say goodbye to the guesswork and say hello to best-in-class online instruction, ensuring the design and installation process is both quick and efficient.