Полочная акустика — Mission LX-1 MKII

The LX-1 MKII is the smallest two-way bookshelf model in the LX MKII range of Mission, a British maker, and it is also suited to rear or surround duty in multichannel systems. Alongside it the series has larger bookshelf and floorstanding models, the LX-C1 and LX-C2 centre speakers, the LX-3D surround model and the LX-10SUB MKII subwoofer. Buyers choose between three matte finishes named Walnut Pearl, Lux White and Lux Black.

Key specs that matter

A 4-inch (100 mm) composite fibre bass driver works with a 25 mm microfibre dome tweeter, with the handover between them at 2.7 kHz. Mission rates the response at 58 Hz to 20 kHz within 3 dB, with bass extension to 55 Hz at -6 dB. Sensitivity is 86 dB at 2.83 V and 1 m, peak output reaches 99 dB, and the nominal impedance of 8 ohms falls to a minimum of 4.2 ohms. The recommended amplifier power is 20 to 80 W. The bass reflex cabinet has a volume of 5.5 litres. Height on the plinth is 260 mm, width is 160 mm and depth is 200 mm plus 8 mm for the terminals, and each unit weighs 4.13 kg net, while the shipping carton weighs 9.42 kg.

Engineering and use context

On the LX-1 MKII the arrangement Mission calls Inverted Driver Geometry is retained, so the tweeter sits below the bass unit rather than above it. The aim is to equalise the path length between every driver and the listening seat and so improve time alignment between them. The microfibre tweeter was newly designed for the MKII generation and uses a neodymium magnet. From the QX series comes the comb-tooth serration pattern on the driver surrounds, which is meant to scatter reflections from nearby surfaces, and small indentations surround the tweeter as well. The crossover is a 4th-order Linkwitz-Riley network with slopes of 24 dB per octave, developed with computer modelling to balance on-axis and off-axis response. Cabinet bracing was designed with 3D laser-guided modelling to raise rigidity and lower noise radiated by the panels.

Pairing

Being modestly efficient and never dipping below 4 ohms, the LX-1 MKII suits compact stereo amplifiers or AV receivers of modest power. Its small size makes it practical on a desk, a shelf or wall brackets for rear channels, and the LX-C1 MKII centre and the series subwoofer extend it to a full home cinema set.

Alternatives

The Mission LX-2 MKII is the next bookshelf model up, with a 5-inch bass driver, 87 dB sensitivity and a 305 mm tall cabinet weighing 6.34 kg.