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• 15" woofer
• Progressive wave diaphragm, double coated front and back side
• Undercut T pole with thick copper ring below and thick aluminum ring above
• Patented Intercooler system for low temperature and long life
The PHL 5021 is designed for use as a subwoofer in a recording studio or theatre. It has good bass extension with high. The cloth surround allows for smooth extended high frequency and long life. It features a very fast and tight punchy bass like an 8". Ruler flat to 500 Hz. crossover. For best performance use a 142 liter vented enclosure for -3dB at 32 Hz. The port tune is 33 Hz., use three tubes each 4" diameter by 13" long. 500 watt amplifier = 119 dB.
