Stimmen - 4, Durchschnittliche Bewertung: 3.3
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Anleitung Zusammenfassung
. . 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. A LIT EEC I ^ШЁЁЁЁЁЁЁШИШЯЯ 1515 S. Manchester Ave., Anaheim, Calif. 92803 A DIVISION OF ALTEC CORPORATION 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 reproducing bass and mid-bass sounds. 3" edge-wound aluminum ribbon voice coil, rigid cast aluminum frame, 17% pound magnet assembly. 1209B Powered Speaker System I 1209B ALTEC1209B- 1209B SPECIFICATIONS Type: Power Output — Bass Amplifier: Treble Amplifier: Power Requirements: Input Sensitivity (for Rated Output with Full Boost): Pressure Sensitivity: Acoustic Output at Maximum Gain Settings — Direct Input (No T ransformer): High-Level Balanced-Line Matched Input (15335 Transformer) High-Level Balanced-Line Bridging Input (15095A Transformer): Biamplified powered speaker system with wide-angle coverage 60 watts 30 watts 120V, 50/60 Hz -17W at zero signal 90W at 30W output 135W at 90W output 0.5V rms direct 0.5V rms with 15335 Line Matching Transformer (high-level balanced-line matched input) 0.1V rms with 15095A Line Bridging Transformer (high-level balanced-line bridging input) 103 dB SPL measured at 4' on axis with 1 watt input of pink noise from 100 Hz to 10 kHz (Ref.: 0.0002 dyne/cm2). Equal to El A rating of 56 dB SPL measured at 30' on axis with 1 milliwatt input. 118.0 dB SPL measured at 4' on axis with 0.5V rms input of pink noise from 500 Hz to 3000 Hz (Ref.: 0.0002 dyne/cm 2) 118.0 dB SPL measured at 4' on axis with 0.5V rms input of pink noise from 500 Hz to 3000 Hz (Ref.: 0.0002 dyne/cm 2) 118.0 dB SPL measured at 4' on axis with 0.1V rms input of pink noise from 500 Hz to 3000 Hz (Ref.: 0.0002 dyne/cm 2) Input Impedance: Frequency Response: Crossover Frequency: Input Connections: Distribution Pattern: Components: Dimensions — HF Horn Externally Mounted: HF Horn Internally Moutned: Finish: Weight: 15.000 ohms direct 15.000 ohms with 15335 transformer 600 ohms with 15095A transformer 35 Hz to 20 kHz, normalized composite output (see Figure 1) 500 Hz with 12 dB/octave slope 2 standard %" diameter phone jacks, paralleled — or — Barrier-type terminal board for 600-ohm applications (requires transformer accessory module to be installed in biamplifier) 90° horizontal x 40° vertical 1 ALTEC 421A Low-Fre-quency Musical Instrument Loudspeaker 1 ALTEC 511B High-Frequency Sectoral Horn 1 ALTEC 808-8A High-Frequency Driver 1 ALTEC 771B Electronic Crossover Biamplifier 1 ALTEC 828B Low-Frequency Horn 1 ALTEC 50', 2-conductor cable with standard %" diameter phone plug on each end 54%" H x 30" W x 24" D (137.80 cm H x 76.20 cm Wx 60.96 cm D) 42" H x 30" W x 24" D (106.68 cm H x 76.20 cm Wx 60.96 cm D) Theatre gray enamel 180 pounds (81.50 kg) Figure 1. Frequency Response Measured at 4' on Axis with 1 Watt Input BIAMPLIFIER SPECIFICATIONS Type: Gain (with Full Boost) — Bass Amplifier: Treble Amplifier: Input Sensitivity (for Rated Output with Full Boost: Power Output — Bass Amplifier: Treble Amplifier: Total Harmonic Distortion (THD): IM Distortion: Crossover Frequency: Frequency Response: Input Impedance: Load Impedance: Biamplifier with electronic crossover 52 dB with 15335 Line Matching Transformer 66 dB with 15095A Line Bridging T ransformer 49 dB with 15335...