Altec Lansing 1209B User Manual
1209b powered speaker system, 1209b
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1209B Powered Speaker System
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ALTEC has combined the 771B Electronic Crossover Biamplifier with the 1208B Nonpowered Speaker
System to provide ALTEC's 1209B Powered Speaker System — a superb speaker system to make your
happening happen — one that projects sound to the farthest listener.
Horns control wide-angle distribution of up to 90 watts of continuous program material for the entire
audio spectrum. Since all frequencies are reproduced by horns, off-axis frequency response is almost
identical to on-axis response. Listeners in side and rear seats hear the same natural sound as those in front-
row-center seats.
All components of the 1209B system are carefully matched:
421A Low-Frequency Musical Instrument Loudspeaker . . . 15" woofer for high efficiency in reproduc
ing bass and mid-bass sounds. 3" edge-wound aluminum ribbon voice coil, rigid cast aluminum frame,
1714 pound magnet assembly.
51 IB High-Frequency Sectoral Horn . . . massive, cast aluminum, 25" wide. Operates from 500 Hz to
beyond audibility.
808-8A High-Frequency Driver . . . has an extremely rugged voice coil and diaphragm assembly that
handles much more power than conventional drivers. Smooth response from 500 to 20,000 Hz.
771B Electronic Crossover Biamplifier . . . two separate power amplifiers that faithfully reproduce all
frequencies ... a 60-watt power amplifier for low frequencies from 35 to 500 Hz and a 30-watt power
amplifier for mid and high frequencies from 500 to 20,000 Hz.
828B Low-Frequency Horn . . . sturdy %" plywood front-loaded exponential horn provides excellent
bass and mid-bass reproduction and controlled sound projection.
The 1209B components are shipped separately, in kit form, ready to assemble. All that is needed is a
screwdriver — and 30 minutes. Assemble it with the sectoral horn on top or inside the cabinet ... it
sounds great either way.
Detailed specifications and descriptions of 1209B system components can be obtained from their respective
ALTEC catalog sheets and brochures.
1515 S. Manchester Ave., Anaheim, Calif. 92803
A DIVISION OF ALTEC CORPORATION