Description

Pack stadium-grade clarity into a compact box. The Bose ArenaMatch Utility AMU105 is a weatherized, two-way loudspeaker that delivers articulate vocals and full, foreground music in outdoor zones where space is tight but coverage has to be wide. A 5.25″ LF5 woofer teams with Bose’s EMB2S compression driver behind a constant-directivity horn, creating a consistent 100° × 100° pattern you can mount horizontally or vertically without hot spots. An internal 70/100V transformer (with 8-ohm bypass) streamlines distributed runs, while the rugged enclosure, three-layer stainless-steel grille, and IP55 rating mean it keeps playing through heat, dust, and rain. Use AMU105 as zone-fill around ArenaMatch arrays, or on concourses, pool decks, courtyards, breweries, and retail promenades where high SPL and speech intelligibility matter day after day.

Why you’ll like it

• Ultra-compact but loud enough for real foreground music and announcements

• Uniform 100° × 100° coverage for clean, predictable results

• Built for the elements (IP55) with pro-grade hardware options for fast installs

Key Specifications

Acoustic

• Type: Passive 2-way, constant-directivity horn

• Frequency response (–3 dB): 100 Hz – 16 kHz; range (–10 dB): 90 Hz – 18 kHz

• Nominal coverage: 100° (H) × 100° (V)

• Sensitivity (1 W/1 m): 90 dB free-field (92 dB wall/ceiling)

• Max SPL (calculated peak @1 m): up to 118 dB (installation-dependent)

Transducers

• LF: 1 × 5.25″ Bose LF5 high-excursion woofer (1.5″ VC)

• HF: 1 × Bose EMB2S compression driver (2″ VC)

• Passive crossover: ~2.0 kHz

Power & Impedance

• Transformer taps (internal):
• 70 V: 5 / 10 / 20 / 40 / 80 W + bypass
• 100 V: 10 / 20 / 40 / 80 W + bypass

• Nominal impedance (bypass): 8 Ω

• Power handling (manufacturer tests): 100 W continuous / 400 W peak (Bose extended lifecycle); 150 W continuous / 600 W peak (AES)

Weather & Build

• Weather rating: IP55; EN 54-24 compliant for voice-alarm systems (IP33C)

• Enclosure: Exterior-grade plywood with industrial polyurea coating

• Grille: Three-layer stainless steel with acoustic foam; water-resistant woofer cone

Connectivity & Mounting

• Input: Barrier-strip terminals, gasketed input cover

• Mounting: M8 threaded inserts for U-bracket; rear M8 inserts (75 mm, 2-bolt pattern)

• Optional accessories: Surface-mount pan-tilt bracket, suspension rail, pole adapter (sold separately)

Physical

• Dimensions (H × W × D): 6.0 × 12.0 × 9.0 in (152 × 305 × 229 mm)

• Net weight: 14.4 lb (6.5 kg) (16.5 lb / 7.5 kg with U-bracket)

Model / Color

• Black: MFR #811433-0110

• White: MFR #811433-0210

Retail reference (B&H page)

• Listed features include 90 Hz–16 kHz frequency range (–10 dB), 400 W peak, 100° × 100° coverage, IP55 weather rating.