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<blockquote data-quote="rob420" data-source="post: 8092531" data-attributes="member: 653701"><p>The sub is the new 2012 mojo 15&quot; quad voice coil 1 ohm, not the M5 misprinted that above.&nbsp; The box is a little over the recommendation of 5.25. The amp never clipped at the setting in the prior box, which was 3.5 cuft or slapped, not sure what the port was tuned at.&nbsp; I ended up frying the voice coil still plays to some extent.&nbsp; Sending it out tomorrow for a new one under warranty.&nbsp; My port maybe an issue, not sure new to this tuning thing.&nbsp; Prior to this sub all my other mojos had a 2&quot; wide port at the length of the box not sure how far it dropped in they always slammed with no slapping.&nbsp; I used the re box calculator and ended up with a port 4.75&quot; wide 19.5&quot; high and 15.75&quot; with an 8&quot; 90 degree angle.&nbsp; The box externally measures 21&quot; high 30&quot; wide 23&quot; deep.&nbsp; Tuned at about 36hz.&nbsp; I believe the port ratio was 9:1. Sub facing up port on back. Is it possible its getting to much air?&nbsp; Was thinking about chopping the height down and doing a port running with the length at a smaller diameter on the lower back of box, as a possible fix.&nbsp; Already, chopped the box once due to being to big, figure I could do once more before having to buy more MDF.&nbsp; No car audio places have the tools to check if my amp is set correctly around where I live to rule the amp out.&nbsp; Thanks for all the feed back it is greatly appreciated</p></blockquote><p></p>

[QUOTE="rob420, post: 8092531, member: 653701"] The sub is the new 2012 mojo 15" quad voice coil 1 ohm, not the M5 misprinted that above. The box is a little over the recommendation of 5.25. The amp never clipped at the setting in the prior box, which was 3.5 cuft or slapped, not sure what the port was tuned at. I ended up frying the voice coil still plays to some extent. Sending it out tomorrow for a new one under warranty. My port maybe an issue, not sure new to this tuning thing. Prior to this sub all my other mojos had a 2" wide port at the length of the box not sure how far it dropped in they always slammed with no slapping. I used the re box calculator and ended up with a port 4.75" wide 19.5" high and 15.75" with an 8" 90 degree angle. The box externally measures 21" high 30" wide 23" deep. Tuned at about 36hz. I believe the port ratio was 9:1. Sub facing up port on back. Is it possible its getting to much air? Was thinking about chopping the height down and doing a port running with the length at a smaller diameter on the lower back of box, as a possible fix. Already, chopped the box once due to being to big, figure I could do once more before having to buy more MDF. No car audio places have the tools to check if my amp is set correctly around where I live to rule the amp out. Thanks for all the feed back it is greatly appreciated [/QUOTE]

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