I remember the days of seeing "Earthquake" in "Sensurround" that shaking bass that would make you quiver up as this threatening sound unleashes it doom upon the audience, these where mighty loudspeakers placed behind the screen, with huge sound pressure levels, that would ether crack the ceiling kill the fish in the pet shop next door to the cinema or possibly a nose bleed....
They where the "Cerwin Vega's" today if you want to recreate that Sensurround feeling there is a whole new bread of "Cerwin Vega" loudspeakers to purchase, from expensive models to affordable models, there will a "Cerwin Vega" for you for party's or the awesome home cinema arena...
With 11x Cerwin Vega placed within the room, three up front two for each side wall and four for the back wall this will, give you one hell of a rollercoaster ride,
Not forgetting the Dual sub bass units, around 2x will be amble enough to rattle teeth loose on a film like "Earthquake" on the BIG ONE chapter 8! Dual 18" woofers 105db sensitivity @1 watt/1meter 30Hz 200Hz, (±3db) Power handling 1500watts 3000watts peak power Max SPL 137db @ 1meter >136db 4 ohms Size (48"x 24.25"x 30" H x W x D) Weight (95.5Kg)
So these puppy's will be the home cinema ticket for you, and follow the instructions to the latter, they will transform any motion picture soundtrack, in the home cinema environment into a joyful mega sound of unrelenting pressure, the "Cerwin Vega" wall of sound....
"Earthquake" premiered with a dramatic new innovation in motion picture sound known as "Sensurround" For the first time audio was an integrated part of the movie experience through special effects. The concept required large powerful bass cabinets which would provide very low frequencies in order to shake the movie theater, thus simulating a real earthquake. For this purpose the "E" bass horns and woofers were developed. These were 18" Woofers in a folded horn configuration. The internal path length of the horn was 6 feet with a cutoff frequency of 33 Hz. Sensitivity of the system was an Incredible 106 dB at 1 watt / 1 meter. "Sensurround" technology and Cerwin-Vega were honored with an Academy Award for Special Technical Achievement in 1974.
The bookshelf features a single 6 1/2 -- inch fiber impregnated woofer and a proprietary waveguide to control high frequency directivity. The center channel version features two 6 1/2 -- inch woofers with the waveguide located in the center of the enclosure. Each model offers a power handling of 125-watts.
The four tower models are available in 10-inch, 12-inch, 15-inch and a massive dual 15-inch version. Offering three-way performance, each speaker features a proprietary high and mid frequency waveguide. The high frequencies feature a 1-inch soft dome tweeter. A 6 1/2-inch fiber impregnated woofer delivers the mid frequencies and the lows feature a cast frame, high excursion woofer.
Finally to round out the Classic Series, two powered, bass reflex subwoofers are available in 250-watt, 12-inch and 300-watt, 15-inch models. Both speaker's feature level controls and a continuously variable crossover from 40 Hz to 150 Hz to tailor the bass response to your environment and personal preference.
The actual setup consisted of six speakers; four large speakers behind the screen, and two on a platform in the back of the theatre. To give you an idea for the size of the speaker cabinets, two featured Cerwin-Vega "Model W" horns 8 ft. long, 4 ft. wide, and 4 ft. high. The other two had Cerwin-Vega "Model C" horns 1 ft. wide and 5 ft. high. Each speaker was driven by a 1000-watt amplifier, which was controlled by a special optical control track in the film, in addition to the normal 4-track magnetic soundtrack for voices and music (which, strangely, was in mono, and not stereo).
The VIS-218 is a concert level subwoofer featuring two long excursion,high-powered woofers for earth-shattering bass Cerwin-Vega! style. With a frequency response of 29Hz to 300Hz and a peak power rating of 1400 watts, the VIS-218 is capable of producing high-impact bass levels of up to 102dB.
• Frequency Response: 29 Hz - 300 Hz • Peak Power Handling: 2800 watts • Program Power Handling: 1400 watts • Nominal Impedance: 4 Ohms • Sensitivity (1w/1m): 102 dB • Connections: Neutrik Speakon • Voice Coil Size: 4" • Dimensions: (HxWxD):24" x 48" x 24" • Weight: 190 lbs.
"Earthquake" premiered with a dramatic new innovation in motion picture sound known as "Sensurround" For the first time audio was an integrated part of the movie experience through special effects. The concept required large powerful bass cabinets which would provide very low frequencies in order to shake the movie theater, thus simulating a real earthquake. For this purpose the "E" bass horns and woofers were developed. These were 18" Woofers in a folded horn configuration. The internal path length of the horn was 6 feet with a cutoff frequency of 33 Hz. Sensitivity of the system was an Incredible 106 dB at 1 watt / 1 meter. "Sensurround" technology and Cerwin-Vega were honored with an Academy Award for Special Technical Achievement in 1974. 
