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General| Brand | Altec Lansing |
|---|---|
| Model | 811B HF HORN |
| Category | Horn |
| Language | English |
Specifies the sound dispersion pattern as 90° horizontal by 40° vertical.
Lists recommended crossover frequencies for 511B (500 Hz) and 811B (800 Hz) drivers.
Details sensitivity measurements at 1W/4' for different frequency ranges and drivers.
Lists compatible drivers (902-8B, 908-8B, 731C*) and their SPL ratings.
Provides height, width, and depth for the 511B horn in inches and centimeters.
Provides height, width, and depth for the 811B horn in inches and centimeters.
Specifies the weight for the 511B and 811B horns in pounds and kilograms.
Describes horn construction (cast aluminum, exponential expansion) and dispersion pattern (90° H x 40° V).
Details required performance criteria including cutoff frequency and pressure sensitivity.
Lists dimensions and weights for ALTEC Model 511B and 811B horns.
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