The Earthquake Sound SLAPS-M12v2 is a tunable passive bass radiator that significantly increases subwoofer efficiency and ability for ultra-low frequency reproduction without additional amplifier power or enclosure volume. Designed to perfectly complement all good quality long throw woofers on the market, SLAPS add up to +6dB of bass compared to regular sealed and ported enclosures. The benefit of SLAPS being user-tunable is that they can be integrated into virtually any subwoofer/enclosure combination. SLAPS (Symmetrically Loaded Audio Passive System) overcomes the limitations known from the conventional sealed and ported enclosures that tend to limit excursion. As the name indicates, SLAPS is built symmetrically, distinguishing it from traditional or other inferior passive devices on the market today. SLAPS technology integrates a dual structure of identical opposites in its suspension design, resulting in identical properties in both the negative and positive pressure domain. The high efficiency and performance are a result of the pneumatic coupling between SLAPS and an active driver. The unique and patented design of SLAPS allows the active driver compression-free excursion, resulting in a deep, dynamic, and powerful bass response.

Adds up to +6dB of bass compared to conventional sealed and ported enclosures; Enables deep bass from a compact volume without any annoying port noise. Can be integrated into virtually any subwoofer/enclosure combination with a slim mounting depth of less than 3 inches. User-tunable for optimum performance for a wide range of enclosure sizes and musical preferences with preinstalled 270g mass included. Patented design that allows for new subwoofer design possibilities where even small enclosures can be tuned to low frequencies. Increases subwoofer output and efficiency without additional amplifier power or enclosure volume.