✓ Resonant frequency (Fs): 73

Subsonic filter: 10–50 Hz

Mechanical loss factor: > 0

Horn attachment for high efficiency and controlled sound radiation

✓ 2-stage treble level adjustment with integrated treble protection for optimum listening pleasure

GZIA 500.1 Packaging Unit:Individually ✓ Resonant frequency (Fs): 73Ground Zero Iridum Series The IRIDIUM line, which is GROUND ZERO's entry into the product world, offers many useful features and amazing performance. The range includes a variety of affordable amplifiers, speakers and subwoofers for everyday use and SPL purposes. Many subwoofer models are available as individual drivers for customized applications, but also as pre equipped cabinets in passive or active versions. 1 channel subwoofer amplifier with