X 18 Port Area, Tuning, And Box Volume

[SQL50]

How many sq in of port does an x 18 need? And how many cu ft does the sub need? Sundowns website had a vivid description of the sub, but no box specs. The only thing it said was that they work in the traditional small enclosures like the sa's and the zv3's up to 50% more than the recommended volume. Also what would be a good tuning for this sub? Around 28 hz? Thanks in advance.

Edited June 2, 2014 by SQL50

[CleanSierra]

75-100" of port, 4 cubes minimum(I'd do about 5-6 on rated power) and tuning to around 30 Hz is what is recommended for that sub. Tuning is preference, tune where you want.

[DylanBunch]

From what I've seen they work well in boxes with not a lot of port tuned low 30s high 20s

[Kyblack76]

2 cubes, tune to 50

[BLuejoules]

2 cubes, tune to 50

I dont know why, but that made me giggle really loud and I got some strange looks for it.

[TheMonolith2001]

Man I really want to try one of these and compare it to my Fi Q 18. Do you guys think it would work well if I dropped it into my existing 8 cube 28hz box?

EDIT: Oops, Here is box: http://www.stevemeadedesigns.com/board/topic/151485-fi-q-18-box/?p=2162680

Edited June 2, 2014 by TheMonolith2001

[sundownz]

We do have a full box design up on the site :

http://www.sundownaudio.com/misc/Boxes/SA-SD-E%20boxes/Sundown%201-18.skp

It is ~5.25 cubes after displacement tuned to ~35 Hz with ~78 in^2 of port.

You can go up or down in volume a bit, you could tune lower, and could use a little bit more port if desired.

Edited June 3, 2014 by sundownz

[CleanSierra]

^^^I've pulled them all up in sketch to check everything and always have fun dissecting them.

I noticed the Zv4 12" compared to the X has more port and airspace than the same size sub. I thought that was cool to see.

Are you guys every going to post in a format that isn't Sketchup? That way someone unfamiliar or that doesn't have sketch can pull up the suggested enclosures to see suggested space, tuning, port, etc?

Edited June 3, 2014 by CleanSierra

[sundownz]

We'll add in the text descriptions some time during the next round of updates.

[CleanSierra]

We'll add in the text descriptions some time during the next round of updates.

I think that will be really helpful. Keep up the good work.