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<blockquote data-quote="Spr0ket" data-source="post: 1123166" data-attributes="member: 560341"><p>I&#039;m curious what your box specs currently are.&nbsp; If you want more SPL, you can up the amperage with little to no problems.&nbsp; I&#039;ve seen a 13W7 run fine at 1500W RMS in a sealed box.&nbsp; Since you are running sealed, what type of Q are you running at.&nbsp; Ported with the same amp would give you a good 3db boost.&nbsp; Tune the box to 32-36Hz for some solid low end sound quality.&nbsp; If you change the sub, go with a XXX18 in a transmission line box.&nbsp; That will give you the best low tone quality you can find out of the XXX.&nbsp; Also, two 10W7s would easily put out more than the single 13W7 at the same wattage, even if you used a separate chamber for both subs.&nbsp; If you build a ported box, use a large volume vent style rather than a PVC pipe, it will cut down on the wind noise.&nbsp; Round off the edges of the ported area with a router at a .5&quot; corner.</p></blockquote><p></p>

[QUOTE="Spr0ket, post: 1123166, member: 560341"] I'm curious what your box specs currently are. If you want more SPL, you can up the amperage with little to no problems. I've seen a 13W7 run fine at 1500W RMS in a sealed box. Since you are running sealed, what type of Q are you running at. Ported with the same amp would give you a good 3db boost. Tune the box to 32-36Hz for some solid low end sound quality. If you change the sub, go with a XXX18 in a transmission line box. That will give you the best low tone quality you can find out of the XXX. Also, two 10W7s would easily put out more than the single 13W7 at the same wattage, even if you used a separate chamber for both subs. If you build a ported box, use a large volume vent style rather than a PVC pipe, it will cut down on the wind noise. Round off the edges of the ported area with a router at a .5" corner. [/QUOTE]

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