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Technical Information
502A Controlled Array
Frequency range
130Hz – 15kHz
Active equalization (with 502C)
Required
Nominal Impedance
8Ω
Maximum acoustic output
112dB-SPL average; 121dB-SPL peak
Recommended amplifier power
150-600 Watts continuous into 8Ω
2
Sensitivity
90dB-SPL (1W, 1m), 130Hz to 15kHz
Beamwidth (-6dB point)
120° horizontal; 70º vertical
Long-Term power handling
150 Watts continuous
Mechanical Specifications
Dimensions: 23.5" H x 5.75" W x 6.75" D
(59.7 cm H x 14.6 cm W x 17.1 cm D)
Weight: 15 pounds (6.8 kg)
Mounting points: Six (6) 8mm threaded
inserts, 11mm depth
Fuse: 4-ampere AGC 4 (Buss) or 3AG
(Littelfuse)
Connectors: Two (2) parallel-wired barrier
strips
4
1
Full bandwidth pink noise is applied to the 502C Systems Controller and amplified to a level at the speaker terminals corresponding to the long-term rated power handling of the
speaker. The average sound pressure level (dB-SPL) is measured at 1 meter from the speaker in an anechoic environment. The peak maximum acoustic output is the peak SPL
possible with the maximum recommended amplifier power using musical program material.
2
Full bandwidth pink noise is applied to the 502C Systems Controller and amplified to a level at the speaker terminals corresponding to one Watt as referenced to the nominal
impedance. The average sound pressure level (dB-SPL) is measured at 1 meter from the speaker in an anechoic environment.
3
Full bandwidth noise, meeting the International Electrotechnical Commission standard #268-5, is applied to the 502C Systems Controller and amplified to a voltage at the speaker
terminals corresponding to the power handling of the speaker. The speaker must show no visible or measurable loss of performance after 100 hours of continuous testing.
4
International versions use XLR-type connectors.
502B Acoustimass
Enclosure
Frequency range
55Hz – 150Hz
Active equalization (with 502C)
Required
Nominal Impedance
1
8Ω
Maximum acoustic output
115dB-SPL average; 122dB-SPL peak
Recommended amplifier power
450-1200 Watts continuous into 8Ω
Sensitivity
90dB-SPL (1W, 1m), 55Hz to 150Hz
Long-Term power handling
3
450 Watts continuous
Mechanical Specifications
Dimensions: 31.0" H x 14.0" W x 15.5" D
(78.7 cm H x 35.6 cm W x 39.4 cm D)
Weight: 85 pounds (38.6 kg)
Mounting points: Eight (8) 8mm threaded inserts,
20mm depth
Fuse: 7-ampere AGC 3AG (Littelfuse)
Connectors: Two (2) parallel-wired barrier strips
®
Bass
1
2
3
Bose
Panaray
®
Sound System
(502
A, 502B, 502C)
®
• New 5-driver array design–optimized for
smooth coverage at all frequencies
• Modular components for system design
flexibility
• Bose-patented Acountimass
enclosure
• Sleek, elegant design for architectural
compatibility
• Full line of Bose-designed accessories for
easy installation
• New electronic systems controller
• Available in two colors, plus paintable
502C Systems Controller
Number of audio channels
Two
Operating Modes
502A Full-range, bi-amp; option (w/option
card)
Rear panel connectors
Balanced input x 2 (barrier strip)
Balanced high freq. output x 2 (barrier strip)
Balanced low freq. output x 2 (barrier strip)
Crossover
140Hz in bi-amp mode (with 502B);
rolloff slope: -18dB/octave
Rear panel controls
Mode switch
Input sensitivity switch x 2 (-10dB-V, +4dB-V)
Bass level control (range -18dB to +3dB)
Bass mono switch (norm/sum)
Electrical specifications
Channel separation: >60dB @ 1kHz
Input impedance: 2.4kΩ nominal
Output impedance: 600Ω nominal
Output level: 8.0 V RMS max. into 600Ω
Mechanical Specifications
Dimensions: 120 V/barrier strip –1.75" H x
4
19.0" W x 8.75" D
(4.4 cm H x 48.3 cm W x 22.2 cm D)
220-240 V/XLR – 1.75" H x 19.0" W x 8.0" D
(4.4 cm H x 48.3 cm W x 20.3 cm D)
Weight: 5.5 pounds (2.5 kg)
®
bass
®
4