Sequoia_Bass Posted August 30, 2019 Report Share Posted August 30, 2019 I'm considering buying a sundown U 18 and putting it in a nice box in the back of my 2015 scion tc. This would be my first 18 inch sub. i currently have a ZV515. My dilemma is that one day i would want to upgrade from the u-18.. but i won't ever be able to get more than 4.5 cubic feet net out of a box in my small hatchback space. would it be possible for me to even upgrade to any other 18 without sacrificing a lot of potential... sundown suggests over 7 cubic feet for the zv5-18 i believe! which seems like so much coming from someone who's never owned an 18. any input is appreciated Link to comment Share on other sites More sharing options...
Mike4068 Posted August 30, 2019 Report Share Posted August 30, 2019 My fi 18 is in 7 cubes. Pretty standard. Link to comment Share on other sites More sharing options...
deathcards Posted August 30, 2019 Report Share Posted August 30, 2019 Also understand that a 15 or a 12 in a more appropriate box will probably be louder than that 18 in a wrong sized box. There is a lot of trade off when the enclosure is too small or too big skar sk2500.1 0 gauge power and ground kunukonceptz alpine HUvxi65 components on BA gt-275new build log -> http://www.stevemeadedesigns.com/board/topic/150642-project-d-kon-deathcards-build-log/#entry2148821 2 x-15 sundowns singer alt, odyssey bat, and maxwell ultra caps Link to comment Share on other sites More sharing options...
Sequoia_Bass Posted September 2, 2019 Author Report Share Posted September 2, 2019 Thanks guys! I'll be sticking with my 15 then. Link to comment Share on other sites More sharing options...
DiBo Posted September 2, 2019 Report Share Posted September 2, 2019 U-18 in 4.5 will be louder than Zv5-15. My u series 15 was only 1db less than my zv5-15. The U series are more efficient and you'll have slightly more cone area with the U series. You won't play as low but you'll be a lot more musical. Link to comment Share on other sites More sharing options...
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