Integrated Systems Europe 2014 is one of the most important dates of the year for the AV installers and the audio professional sector. In this occasion, the new series of active and passive subwoofers Z15 and Z18 is one of the most remarkable product that WORK is going to show at the trade fair. This new series is composed of 4 models, Z15 (single 15), Z18 (single 18) that can be configured passive or active. The active ones add a 1000 W Class D amplifier (Z15 A and Z18 A) which combined with the built-in DSP achieve a perfect sound adjustment. The passive models, for its part, add a single 15 woofer (Z15) which has a continuous power up to 500 W @ 8 ? and a single 18 (Z18) woofer that has a continuous power up to 600 W @ 8 ?. Besides, the inclusion of two passive models and two active models allows to increase the number of possible configurations, from an independent subwoofer reinforcement (passive model) to a self-powered system which will enrich a previous amplified installation (active model). In addition, thanks to the bass reflex design with direct radiation, these subwoofers are able to make a Cardioid pattern configuration, which reduces (almost eliminates) the low frequencies radiation backwards, avoiding interferences and unwanted noises. WORK has designed the Z15 and Z18 subwoofers with 18mm high quality plywood and rugged powder coated grill. Its construction and compact size made them portable and durable. These subwoofers have been designed to complete systems with current WORK products allowing to make different configurations.