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Technical Specifications
AMU208
System Performance
Frequency Response (–3 dB)
1
Frequency Range (–10 dB)
Nominal Coverage Pattern (H × V)
Recommended High-pass Filter
Crossover
70V/100V transformer tap settings
Power Handling, long-term continuous
Power Handling, peak
Sensitivity (SPL / 1 W @ 1 m)
4
Calculated Maximum SPL @ 1 m
5
Calculated Maximum SPL @ 1 m, peak
EN 54-24 Certified Ratings
6
Sensitivity (1 W @ 4 m)
Measured max. SPL @ 4 m
Coverage Angle Octave Band
Horizontal Coverage
Vertical Coverage
Passive Nominal Impedance
Rated Noise Voltage / Transformer Rated Noise Power
Transducers
Low Frequency
High Frequency
Nominal Impedance
Physical
Enclosure Material
Finish
Grille
Environmental
7
Connectors
Suspension/Mounting
Dimensions (H × W × D) – millimeters
Dimensions (H × W × D) – inches
Net Weight (loudspeaker only)
Net Weight (with U-bracket)
Shipping Weight
Accessories
Footnotes
1.
Frequency response and range measured on-axis in anechoic environment with recommended bandpass and EQ.
2.
Bose extended-lifecycle test using pink noise filtered to meet IEC268-5, 6-dB crest factor, 500-hour duration.
3.
AES standard 2-hour duration with IEC system noise.
4.
Sensitivity measured in anechoic environment with recommended high-pass filter.
5.
Maximum SPL calculated using sensitivity and power ratings, exclusive of power compression.
6.
The specifications data was measured in an anechoic chamber, free-field. Reference plane is on the grille surface. Reference axis is perpendicular to center of grille surface.
Horizontal plane contains the reference axis and is parallel to the horizontal axis defined by the longest baffle dimension.
7.
Tested to IP55 per EN60529 when used in General Purpose Audio installation, not for Fire and Evacuation notification applications. Notified Body certified by UL per the EN54-24
standard for an IP33C rating, acceptable for use in a Fire and Evacuation Notification System application.
24 • English
80 Hz to 16 kHz
70 Hz to 16 kHz
90° × 60° (rotatable high-frequency horn)
70 Hz with minimum 12-dB/octave filter
Passive; separate bandpass filters per transducer (200 Hz and 1.2 kHz)
70V: 5W (876 Ώ), 10W (485 Ώ), 20W (250 Ώ), 40W (125 Ώ), 80W (62 Ώ); 100V: 10W (876 Ώ), 20W (485 Ώ),
40W (250 Ώ), 80W (125 Ώ)
Bose Extended Lifecycle Test
300 W
1200 W
Free Field
94 dB
119 dB
125 dB
100V/80W
81.0 dB
99.3 dB
500 Hz
68°
186°
8 Ώ
100V / 80W
2 × Bose LF8 high-excursion 8-inch woofer (2-inch voice coil)
1 × Bose EMB2S titanium-diaphragm, neodymium compression drivers (2-inch voice coil)
8 Ω
Exterior-grade birch plywood
Two-part polyurethane coating, black or white
Powder-coated perforated stainless steel, acoustic foam, stainless steel mesh
Rated for direct-exposure outdoor installations (IP55 per EN60529; IP33C per EN54-24)
1 × barrier strip (accepts 10 to 18 wire gauge)
3 × M8 threaded inserts for U-bracket (per side); 4 × M8 threaded inserts on rear surface (127 × 70 mm, 4-bolt pattern)
235 × 713 × 316 with U-bracket
9.3 × 28.1 × 12.4 with U-bracket
17.0 kg (37.5 lb)
19.5 kg (43.0 lb)
23.1 kg (51.0 lb)
Included powder-coated steel U-bracket; optional pan-and-tilt bracket
2
Wall/Ceiling
Free Field
96 dB
94 dB
121 dB
120 dB
127 dB
126 dB
1000 Hz
2000 Hz
38°
110°
124°
80°
ArenaMatch Utility • Installation Guide
PRO.BOSE.COM
AES Transducer Test
3
400 W
1600 W
Wall/Ceiling
96 dB
122 dB
128 dB
Passive
81.0 dB
103.8 dB
4000 Hz
74°
64°
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