Screen Sub 1A provides low distortion, true sub-bass response for any cinema environment.  Built with a

shallow profile, like the Screen 4 and Screen 5, the sub is designed for behind-the-screen placement.  The unit

uses a single 18\" (460mm) long excursion high power driver.  Large area tapered twin ports ensure minimum

turbulence down to the lowest frequencies demanded by today’s digital sound tracks.