perlisten d215sMaximum power and absolute control for uncompromising bass The Perlisten D215s is the reference active subwoofer of the D Series, designed to offer an extreme sound experience , both for high end home theaters and audiophile listening rooms. Thanks to the double push pull configuration in air suspension and the two 380 mm carbon fiber woofers , the D215s guarantees powerful, deep and distortion free bass even at the highest sound pressure levels. With