A proper high-end offering for the SQL lovers. This speaker set is capable not only of great detail and sweet reproduction, but can be a proper banger too. An epic setup for the electronic music types where great SQ isn't sacrificed. Digs deep, gentle but can play very loud at the same time with its very high excursion, has earfulls of detail, a very complete combination. Kevlar-composite cone, double stacked rubber suspension, leads stiched in the spider, double type wire terminals, die-cast aluminum baskets, oversized motor system, PORON tweeters with die-cast aluminum housings, die-cast aluminum angled tweeter pods. Manufacturer provided specs: Woofer: DC Resistance: 2 Ohm Power handling: 50W (massively underrated) Frequency response: 45-6000 Hz Sensitivity: 89 dB Qms: 2.12 Qes: 0.33 Qts: 0.28 Fs: 45 Hz Weight: 1.48 kg Monting depth: 69 mm Mounting diameter: 147 mm Tweeter: DC Resistance: 6 Ohm Power handling: 25W Frequency response: 1300-25000 Hz Fs: 1300 Hz Sensitivity: 91 dB Weight: 180 g Mounting depth: 17 mm Mounting diameter: 55 mm Our own DATS measurements: Right out of the box, no run-in. Vas of the woofer measured with the added mass method with an 18.5g added weight. Woofer: Re: 1.99 Ohm Fs: 54.07 Hz Qts: 0.3568 Qes: 0.4002 Qms: 3.29 Le: 0.1493 mH at 10kHz BL: 5.646 Cms: 0.459 mm/N Mms: 18.87 g Vas: 11.71 L Sensitivity: 94.59 dB 2.83Vrms Tweeter: Re: 5.375 Ohm Fs: 1414 Hz Qts: 0.9901 Qes: 1.779 Qms: 2.233 Le: 0.01977 mH at 10kHz What's included: 2x Woofers 2x Tweeters 2x Crossovers 2x Aluminum tweeter pods