1209B Voice of the Theatre (Rev. 2)


Main Details
Maker Altec Brand Altec Corporation Company Voice of the Theatre Series
Form Factor Floorstanding
Signal Path Analog Hardware
Made In United States
Date Produced 1975
(H × W × D)
Weight 180lbs
Power Source 120VAC, 50/60Hz 17W 135W (Max)
Frequency Response 35Hz-20kHz
Notes Powered version of the 1208B using 771B biamplifier.

Cabinet revisions.
Additional Specifications
Treble 10.6"x25.3" Sectoral Horn Altec 808-8A, Altec 511B
Midrange/Bass 15" Paper Cone Altec 421A
Sensitivity (100Hz-10kHz) 103dB/W/4'
Crossover Frequency 500Hz
Crossover Slope 12dB/Oct
Dispersion (Horizontal) 90°
Dispersion (Vertical) 40°
Maximum Output (500Hz-3kHz, 0.5V, 4') 118dB
Amplifier Altec 771B
Output Power (Treble, 8Ω) 30W
Output Power (Bass, 8Ω) 60W
Input Sensitivity 0.5V
Input Impedance 15kΩ
THD (Treble) 0.5%
THD (Bass) 0.5%
SNR 80dB
Damping Factor 25
Enclosure Type Front Loaded Horn, Bass Reflex Altec 828B
Finish Gray
Connector: 1/4" Phone Jack (6.35mm)


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