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Details the ALTEC 210 and 210A Low-Frequency Horns' design for maximum efficiency and high power input without distortion.
Direct-radiating, front-loaded bass reflex enclosure with short, exponentially expanded horn.
108 dB SPL measured in the far field with 1 watt input of pink noise, band-limited from 100 to 1000 Hz.
Recommends specific Altec speaker models for use with the horn, including 515-8G, 515-16G, 515-8GHP.
Details overall dimensions including height, width (with and without wings), and depth.
Specifies the total weight of the unit as 433 pounds (196.4 kg).
Refers to Altec publication AN-11 for detailed construction plans.
Points to Altec publication AL-2422 '515-G Series' for response and impedance curves.
Specifies construction materials, bracing, pressure sensitivity (107 dB SPL), and dimensions for the low-frequency horn.
Identifies the ALTEC Model 210A as the low frequency horn equipped with wings.