I bought an alpine 12" Type R Subwoofer, i need to know if this box will be fine to put it in? heres the link to the box >>>>http://cgi.ebay.com/12-SINGLE-PORTED-VENTED-3-4-MDF-CAR-SUBWOOFER-SUB-BOX_W0QQitemZ360098091803QQihZ023QQcategoryZ50568QQssPageNameZWDVWQQrdZ1QQcmdZViewItem#ebayphotohosting
You spent the money to get a good sub like the Type-R so why go cheap on the enclosure? The enclosure is a vital part of the overall sound you your sub. It will be the difference between a good setup and a bad one.
There are a few things I do not like about that enclosure. They all have to do with the slot port that is used. First, there is no mention of the tuning frequency. That assumes it is very high, probably somewhere in the 40s. Having that high of a tuning frequency with the Type-R is not going to be good. It will give you loud bass but it won't sound good at all. It will not be good for many types of music and may even give you a non-musical tone at times.
Another problem I have with that enclosure is that the slot port has too small of a cross sectional area. The height x width is too small. Because of this you will almost undoubtedly have port noise. Port noise will sound like wind blowing through the port because the air velocity through the port is too high. There will be a lot of air turbulence as well, all which hinder the sound.
If you want a better enclosure then I suggest you either have one custom made by a local shop or make your own. There are some on ebay if you REALLY wanted to get one from there but they cost a little more then $20. They would be my minimum recommendation for that sub.
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