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Credence subwoofer performance curve

 

This is another 1.0 cu. ft. system using our new, 800 watt 12RPSLD4, cast frame woofer, but this time the system is tuned to 42 Hz to “max out” a great, solid bass thump in this small enclosure. The port should be 3” I.D. x 8 3/4” long, or, better, probably an external port 4” I.D. x 16 1/2” long.  Put this together and you’ll have great, strong bass, down to 28Hz (in-car), in, again, a very handy, small package. Use a sharp High Pass filter at 28 Hz, for good power handling.