Designed to meet CEDIA’s target for Level 4 home theaters - 18Hz +/- 3dB, and at an amazing price, the FS12 is a home theater enthusiast’s dream. The industry standard for audio in home theaters is set out in the recommended practices guidelines, known as RP22. It has been established that to be a Level 4 (the highest level) theater, the bass must reach down to 18Hz. It also requires achieving an SPL level of 118dB, which the FS12 does due to the 600W RMS built-in amp. Used in conjunction with suitably powerful amps, such as the OSD Nero HTA7200, and main speakers such as the OSD Black S-series, these subs allow you to experience the ultimate home theater sound.