Bose 901 Series II - Manual (Page 15)

VI
B. The Speaker
Dimensions: 20-9/16" W x 12-3/4" H x 12-7/8" D
Weight: 33 pounds
Nominal Impedance: 8 ohms
C. Percentages of Direct and Reflected Sound Radiation
Power radiated by reflection: 89%
Power radiated directly: 11%
(Design percentages based on concert hall acoustics)
D. Power Handling
Continuous sine wave power at any frequency: 50 watts
Minimum recommended amplifier power: 25 watts rms per channel into 8 ohms
Peak power handling ability (less than five secor>ds}: 400 watts
Maximum recommended amplifier power for speech and music: 270 watts rms into 8 ohms
E. Damping Factor
Any amplifier with a damping factor of 40 or higher meets the requirements of the 901. (The wire size recommenda­
tions of Table 1 on Page 4 must be followed.)
F. Driver Complement
Each unit contains 9 high-compliance full-range drivers with high energy magnets to allow large excursions without
audible distortion on any program material. The drivers are acoustically coupled to eliminate audible resonances.
Nominal driver diameter: 4-1/2"
Maximum driver excursion: +1/4"
Nominal driver impedance: 8 ohms
Weight of each ceramic magnet: 9.6 ounces
G. The Active Equalizer
Dimensions: 2-13/16" H x 9-1/4" W x 6-3/4” 0
Input Impedance: 150k ohms
Output Impedance: less than 100 ohms
Minimum Load Impedance: 5k ohms
Maximum Output Voltage: 4.0 volts
Maximum Gain: 18 d6 at 35 Hz.
ACCESSORIES AND OPTIONS
WALNUT FACINGS
The BOSE 901 is available with walnut facings, to provide the rich look of walnut grain arour>d the entire cabinet.
The small grille panel on each speaker front allows a choice of fabrics. Walnut facings are available as a separate
add-on kit and are not intended for use with the 901 Continental.
PEDESTALS
Specially designed pedestals are available for the 901. They are 18 inches high, and available in either white,
black or chrome.
15