Bose 901 Series II User Manual download pdf (Page 15)

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.

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Bose 901 Series II User Manual Page 15