Efficiency: 81 dB

this subwoofer delivers a powerful and dynamic performance for both everyday music listening and SPL-oriented applications

TW Level -3 / 3 / +3dB

Voice coil material: Copper

ESX QXB8 Packaging Unit:Individually Efficiency: 81 dBESX Quantum Series The QUANTUM QXB bass reflex enclosures impress with their very compact design. With a connection impedance of 2+2 each, the subwoofer can also be operated in 4 or even in 1 to get the maximum out of the amplifier. Thanks to the large voice coils (50 mm for QXB6 and 64 mm for QXB8 and the new QXB10 model), these subwoofers are designed for high power levels in addition to dynamic bass levels and can be operated with more powerful