Ground Zero GZUM 55SQ

- Model - Sound quality midrange speaker - Diameter - 55 mm / 2.17? - Power Handling (RMS/max.) - 90 / 150 Watt - Impedance - 4 Ohms - Efficiency - 88 dB - Frequency Response - 500 Hz ? 11 kHz - Voice Coil - 55 mm / 2.17? - Membran Layout - Coated silk - Magnet material - Neodymium - Mounting Depth - 33 mm / 1.3? - Mounting Ø - 69 mm / 2.72? - Resonance Frequency (Fs) - 353 Hz.