ScanSpeak 26W/4558T06 Silver Series 26 cm Subwoofer 4 ohm, Alu Cone, Double Ferrite Magnet - 56mm Peak Excursion, 25mm Linear - Low Resonance Freq. 21Hz - Magnet System w. Alu Ring - High Output 88dB @ 2,83V - Anodized Alu Cone, Fibre Glass Dust Cap - Die cast Alu Chassis vented below spider Parameters: Size (inches) 10 Fs (Hz) 21 Re (ohms) 2.6 Sensitivity (dB) 88 Qt 0.31 VAS (ltr) 95 Xmax ± (mm) 12.5 Our SILVER SERIES are specially selected units from Scan-Speak’s well-known home audio speakers. Which have been optimized for automotive use. This series enables audiophiles to experience in their vehicle the - TRUE TO LIVE - that they enjoy from their high-end home audio system. Datalehti