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CS186DV in 4.0 cu. ft. ported, 42 Hz box @ 1200 watts (Car.)

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CS186DV Performance curve

Put our CS186DV in this 4 cu. ft. box, tuned to 42 Hz, and you’ll have a compact [for an 18”] system that can put out tremendous bass levels, without breaking a sweat!  This system is an excellent balance between output, high power handling, and a modest cabinet size.  For even more output, you can go to the 6 or 10 cu. ft. cabinets, but if space is at a premium, or you want to mount multiple 18’s, this may be the way to go.  Use a port 6” I.D. x 6.5” long, or, better (if you can find the material) 7” I.D. x 9.7” long.  Be sure to allow for the port in your box volume calculations.  Also please see the 1.5 cu. ft. box for port cross-section details. Finally, for full power handling, use a steep HP filter @ 27 Hz.)