I found different but similar information on the Cerwin Vega website.
Frequency Response: -3db 44 Hz -281 Hz / -10db 37.5 Hz - 335 Hz
Power Capacity: 500W RMS / 1000W Program / 2000W Peak
Recommended Power: 750 w - 1000 w @ 8 ohms
Input Connectors:¼” Phono, Speakon
Sensitivity (1w/1m): 106 dB
Nominal Impedance: 8 ohms
The information they posted threw me in that it was -3dB as opposed to the standard of +/-3dB which, in my opinion, is the equivalent of -6dB. My understanding, today's standards are a minimum reference standard of 20Hz to 120Hz, +/-3dB.
I need to point out that THX reference
levels for speakers means being able to achieve 85dB with 20dB headroom as opposed to being able to play continuously at 105dB. Subwoofers are intended to have a playback level of 10dB more as bass is not as easily perceived so the reference standard is raised to 95dB with 20dB headroom, or 115dB capability. Further research has shown me that during playback, most movie theater sound reproduction systems rarely go above 90dB."Cinemas - do they pose a risk to hearing?"Discussion
None of the soundtracks for any of the films had a continuous, equivalent A-weighted noise level (L Aeq ) greater than the upper safety limit of 85 dB(A) set by the Health and Safety Executive (HSE, 1989). This is broadly consistent with Ihne et al (1999) in the USA, who reported a mean L Aeq of 75.5 dB(A) across 9 films with traditional sound systems and a mean L Aeq of 84.5 dB(A) across 15 films with digital surround sound systems. In the present study the L Aeq levels measured were all below 80 dB(A) regardless of the type of sound system. When the noise levels did exceed 85 dB(A) this was for short periods of time only, usually a total of less than two or three minutes for the whole film. All the films exceeded 90 dB(A) for less than 10 seconds, with the exception of The Siege.
Another article on the matter linked below, which takes into consideration a much larger meta study, has a totally different takeaway than the above study. By combining what the two studies and THX have to share on the matter of sound levels, one gets a reasonable idea of the subjective nature of sound reproduction in one's Home Theater."Noise exposure in movie theaters: A preliminary study of sound levels during the showing of 25 films"
The point of the above information is my trying to tie into your question regarding the theater/commercial style subwoofer. Are you considering this subwoofer? If you are, make note that for stage performances, it's an excellent choice but for for Home Theater sound reproduction, because of it being so limited in it's ability to plumb the lower octaves (depth of reproduction), one would totally lose what a sound engineer or movie producer intended for you to hear.