TW Audio S33

As for low end, the VERA S33 is leading the way in subwoofer design. Comprising an 18" speaker at the front and a 15" speaker at the rear, the bi-amplified S33 offers preset options for different dispersion patterns.

Cardioid mode is optimised for maximum attenuation of rearward sound dispersion and is capable of achieving attenuation higher than 15 dB over the entire LF spectrum.
End-fire mode is optimised for maximum sound pressure at the front with simultaneous partial reduction at the rear.