Jamo A510 2-Way Bassreflex White Speaker The A 510 features an angled, rear-firing bass-reflex port that uses the wall as an acoustic amplifier to increase bass response. This means that the speakers, despite their compact and inconspicuous appearance,are able to reproduce the full frequency range. This beautiful speaker features a powerful 5?in woofer/ midrange unit and a 1in soft-dome tweeter Specifications: System: 2 Way Bassreflex Woofer (inch/mm) 5? / 133 Tweeter (inch/mm) 1 / 25 Sensitivity (dB - 2,8V / 1m) 88 Impedance(Ohm) 8 Weight (kg/lb) 4,8/10,58 Dimensions(HxWxD/mm/in) 350x400x90/13,78x15,75x3,54 Frequency Range 40 - 20.000 Power LongTerm 60 Power ShortTerm 90 TerminalType Gold plated screwterminals Total Volume 12,6/,44