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<blockquote data-quote="Bumpin&#039; Yota" data-source="post: 476974" data-attributes="member: 547455"><p>See this is the thing, I need to know what you have for a system. Your sig says IA DP 12/15.....also the same for amp so im assuming you are in the planning stages.</p><p></p><p>For starters 4.5 cubes would be a good start for the IA DP 15. I'd actually recommend a little bit smaller for the 12. Box size is going to also vary pending the amount of power you apply to the sub. The DP would come alive with about 2kw or more, so 2 mtx's would be a necessity.</p><p></p><p>Feeding the amps, you at least need a good deep cycle up front, so I'd recommend an Optima Blue Top Group 31 - proven loudest battery for burping with the engine off when you are ******* a lot of power from the battery.</p><p></p><p>Run 1/0. Do not skimp on it.</p><p></p><p>As far as port area that should work. The only box I've tried with the mentioned sub was 2.2 cubes tuned to 41hz with about 50sq in of port and 4400 watts rms. (No I couldn't get it to full excursion either.) Also another oddity, the box is dictating the loudest note, not my truck. This box is the same size withthe same port length, but I've been able to make my note go from 44hz to 47hz with some tweaking internally using angles and fiberglass and whatnot. This also gave me a bit of spl to boot.</p><p></p><p>If you have an SUV there are several ways to make a loud box. Typically the CRX box is the easiest to get loud. Loyd has a few other tricks I'm sure he is going to share....by firing the ports and subs back I hear? //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif</p><p></p><p>As far as what to tune to for SPL, that can only be determined by testing on the meter with different tunings.... The same can be said for direction of firing.</p></blockquote><p></p>
[QUOTE="Bumpin' Yota, post: 476974, member: 547455"] See this is the thing, I need to know what you have for a system. Your sig says IA DP 12/15.....also the same for amp so im assuming you are in the planning stages. For starters 4.5 cubes would be a good start for the IA DP 15. I'd actually recommend a little bit smaller for the 12. Box size is going to also vary pending the amount of power you apply to the sub. The DP would come alive with about 2kw or more, so 2 mtx's would be a necessity. Feeding the amps, you at least need a good deep cycle up front, so I'd recommend an Optima Blue Top Group 31 - proven loudest battery for burping with the engine off when you are ******* a lot of power from the battery. Run 1/0. Do not skimp on it. As far as port area that should work. The only box I've tried with the mentioned sub was 2.2 cubes tuned to 41hz with about 50sq in of port and 4400 watts rms. (No I couldn't get it to full excursion either.) Also another oddity, the box is dictating the loudest note, not my truck. This box is the same size withthe same port length, but I've been able to make my note go from 44hz to 47hz with some tweaking internally using angles and fiberglass and whatnot. This also gave me a bit of spl to boot. If you have an SUV there are several ways to make a loud box. Typically the CRX box is the easiest to get loud. Loyd has a few other tricks I'm sure he is going to share....by firing the ports and subs back I hear? [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] As far as what to tune to for SPL, that can only be determined by testing on the meter with different tunings.... The same can be said for direction of firing. [/QUOTE]
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