Marc Abrahams Posted June 2, 2013 Report Share Posted June 2, 2013 Good Day ALL I need help with an enclosure for two 12" Starsound Subwoofers. I want to compete in SPL events, any suggestions on design, tuning, port type would be much appreciated. Thanks in advance Subs are 1.5ohm dvc 1000w rms Amplifier is 3000rms Starsound D7000 I have 3 NSB 170AH batteries 0 gauge cable with big 3 Vehicle is a Toyota tazz Hatch ( resonant freq is 47-49hz ) Maximum trunk size is 16x38x18inch subs Details: Fs (free air resonance) 38 HzSPL(efficiency, 1W/1M) 88 dBNominal impedance Dual 1.5Qts (total speaker "Q") 0.43Qes (electrical "Q") 0.5Qms (mechanical "Q") 2.98Vas (equivalent compliance) 27 LMounting Depth 225 mmMounting Hole Diameter 286 mm Link to comment Share on other sites More sharing options...
Marc Abrahams Posted June 4, 2013 Author Report Share Posted June 4, 2013 anyone? Link to comment Share on other sites More sharing options...
Krakin Posted June 4, 2013 Report Share Posted June 4, 2013 Tune higher up, and have more port area than a usual box would. The more square you can get the port the more efficient it will be. Aero ports would be the most efficient. Krakin's Home Dipole Project http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370 Krakin, are you some sort of mad scientist? I would have replied earlier, but I was measuring the output of my amp with a yardstick . . . What you hear is not the air pressure variation in itself but what has drawn your attention in the two streams of superimposed air pressure variations at your eardrums An acoustic event has dimensions of Time, Tone, Loudness and Space Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears, thus no formula can achieve a definite effect for every listener. Link to comment Share on other sites More sharing options...
cjvue Posted June 4, 2013 Report Share Posted June 4, 2013 I'd do 2.5 - 3cube net tune around 45hz... With those dimension, you have planty of room. My Build Log- T E A M S U N D O W N A U D I O - 2013 DbDrag WF SS1-2 - 5th Place 154.6db 2013 MECA Mod3 CA State Final Champ 153.4db Powered by: Sundown Audio Link to comment Share on other sites More sharing options...
Marc Abrahams Posted July 13, 2013 Author Report Share Posted July 13, 2013 Thank u Link to comment Share on other sites More sharing options...
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