The IWTS-28 SUB is an in-wall subwoofer that uses dual 8” woofers to deliver rich, vibrant bass to custom-installed audio systems. It is easily retro-fitted to existing construction using Atlantic’s GFR-626 grille/frame assembly, the same grille frame assembly used for several other Atlantic speaker systems: the IWCB-626, The IWCB-727 THX Select 2, and the IWTS-30 LCR THX Ultra 2.

The 28 SUB has several features that maximize its flexibility:

As can be expected, the IWTS-28 SUB can be used as the speaker portion of a separately-powered LFE subwoofer in a true 5.1/7.1 system. When used this way, the convenient front-panel switch for the SUB's crossover would be set to ‘off,’ and the jumpers connecting the two sets of input terminals are left in place. An RCA cable goes from the receiver’s Sub Out jack into a mono-block amplifier (such as Atlantic’s SA-180), and then from the mono-block amp into the 28 SUB. All low-pass/high-pass crossover functions are then handled by the receiver’s bass management system, as when using any powered subwoofer.