I've Just recently purchased 2 of the new (since there have been a few) Momo 12's with enclosures. My friends are all making fun of me for spending the money on these subs instead of something "better' like some alpine type-R's or infinity perfect's. I happen to like the Momo subs, and I think they can sound a lot better in a different enclosure. I am currently running them off each off of their own Coustic 401 SE, 400 watt RMS 2 channel amp. I will be getting the Alpine 1000-D as soon as it becomes available to me. My plan was to build a ported enclosure for each sub and put it in the extended cab portion of my Chevy S-10.
I was playing around with some numbers last night, and my box program tells me that I might be able to do this with 12" long, 4in x 4in ports and a 3 cubic foot box for each one. This was tuned to 29 hz, and had a nice curve.
I have noticed that nobody ever talks about putting these subs in a ported (vented) enclosure. Is there a reason for this? I notice a lot of talk about bandpass boxes. I always thought that these were for cheap subs that didn't sound good in any other type of enclosure. I am obviosly going for sound quality, or I wouldn't have purchased the momo, but I also want it to be loud. If anybody could provide me with some specs for a box, that would be great. Keep in mind that they will be very close (right behind) the listener, and I can only go about 1 foot deep, 2 feet wide, and the height can be about 2.5-3 feet. Thats per woofer. I noticed the design for the isobaric ported box as well. What I am really looking for is a boosted low end frequency response. The sealed enclosures produce excellent high frequency bass, but not enough on the low end.
Sorry about writing a book,