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CS186DV in 6.0 cu. ft. ported, 42 Hz box @ 1200 watts

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CS186DV Performance curve

Using our CS186DV in a 6 cu. ft. box, tuned to 42 Hz, is getting into some truly serious SPL territory:  The open space curve almost goes off the graph, even before the auto’s acoustic boost is added!  Keep in mind that the curves reference use of the driver with the coils in series:  With the coils in parallel, sensitivity will be 6 dB higher. (!) Use a port 7” I.D. x 4 ¾” long (if you can find the material) or better, 8” I.D. x 7” long (50.26 sq. inches cross-section for the latter.)  As always, be sure to allow for the port in your box volume calculations. Also please see the 1.5 cu. ft. box for more port cross-section details. Finally, for full power handling, use a steep HP filter @ 27 Hz.