Joe X Posted July 8, 2015 Report Share Posted July 8, 2015 Here is a suggestion, power: to 1.8KW, amp subsonic filter to 28Hz, minimum port clearance 2 3/4", figure is just an assembly guide: NOTE: If building outside you need to build a cardboard dummy box to test fit in it's way inside. Let me know if you need any changes. Link to comment Share on other sites More sharing options...
RainStryke Posted July 9, 2015 Report Share Posted July 9, 2015 I'm assuming that model number you posted is the sub amplifier you will be using for the HDC312. That's a 800w amplifier @ 1OHM. That subwoofer needs about twice that. Link to comment Share on other sites More sharing options...
reedal Posted July 9, 2015 Report Share Posted July 9, 2015 ^^ agreed. While there's no harm in under powering a sub, it also takes a decent amount of power to move subs that are rated for more. As stiff as those soundqubed subs are, the HDC lines should probably definitely get rated rms at least since they can take more than double with no issue SMD Tool Map https://www.stevemeadedesigns.com/board/topic/193176-smd-tool-map-new-november-2014/ Build log https://www.stevemeadedesigns.com/board/topic/197217-reeds-03-tahoe-hat-sqaq-singer-xs-shca-cockbox-80prs/?page=32 Link to comment Share on other sites More sharing options...
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