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How Tetrad Works

In a typical 15", 2-way loudspeaker system, the 15" speaker offers relatively slow transient response, and the small high-frequency horn tends to beam a narrow, blaring sound at the listener—end result, muddy sound. By replacing the 15" speaker with four 8" drivers (that's what tetra means, four), we increased the driver surface area to 201 sq. inches from 177 sq. inches, creating more punch and a tight, more focused low-end. We know it's hard to believe, but four 8" transducers offer better transient response and move a bigger column of air than a single fifteen. Which brings us to the horn…

VOCAL CLARITY AND PATTERN CONTROL

By using four 8" low-frequency drivers, we are able to drop an extremely large horn into the S408 and still keep the cabinet size small. Besides presenting a more friendly load impedance, a bigger horn yields lower distortion, better pattern control and allows the horn to operate more efficiently at lower frequencies‹all the way down to the heart of the critical vocal and midrange zones. Since this larger horn is more stable through the crossover point, the transition to the LF drivers is virtually seamless, in terms of frequency response and directivity. All this adds up to greater consistency throughout the entire coverage pattern, resulting in vastly improved intelligibility across your entire audience.

• Touring quality sound in an easily transported system
• 4x8" LF drivers for solid, wide-dispersion bass pattern
• 1.75" HF driver on oversized horn provides superb coverage
• Pole mountable via pole receptacle on bottom of enclosure
• Trapezoidal shape makes it perfect for floor monitor applications 
• Flyable, horizontally or vertically via 12 integrated rigging points 
• Can be chained together via parallel NL4 connections on rear
• HF thermal overload protection
• Sensitivity: 99dB SPL (1W/1m)
• 600W RMS power handling at 8 Ohms
• Frequency Response: 60Hz-22kHz