blkvenm2001

I have a pair of sa12s in a ram designed enclosure built by a local audio tuned to 31 hz with a 6 inch aero...subs up port firing to the driver side wheel well in the back of my 03 svt focus and they're running off an saz2500 at 1 ohm and they slam the lows hard and play well at least up into the 50-60 hz range havent really tested a lot above that as I've been locked into decaf since I figured out how awesome it is lol. Idk if you are set on a single sub but a pair of sa series subs would be great for what you are looking for it seems. Don't cheap out on your electrical system or your enclosure they make a huge difference in how your equipment will perform. My sas take my sundown 2500 with ease....just make sure gains are set right with a dd1 or oscope and you are golden. Anyone who thinks SAS can't handle 2000-2500 RMS daily hasn't ever used them or tried them. My gains are set properly with my dd1 and I also keep an eye on my clipping light on my bass knob as well just to be safe....I've slammed decaf full tilt for 30-45 min or more straight and the subs barely get warm at all nowhere near hot they're barely above ambient temperature as the most. Just something to think about. I also think a single x would do well in a good box if that would better fit your needs

I agree with taylorfade on this one. If you build a solid box and upgrade your electrical to handle .5 ohm I can easily see you staying the same if not even louder while getting your space back

Net airspace is more than enough but the port area isn't. The website says 4.25 cubes ported with 64 sq in of port which is 15 per cube what you have is around 10 per not nearly enough for an x they move a lot of air...assuming this is a slot port. If its an aero its probably fine. What kind of power is it getting?

Yea the t1500 will slam them. Hopefully its the bdcp version. I'd recommend an ho alternator and at least a really good agm starting battery. Can you get by without that? Maybe but that's pushing it. If you want to get the full potential from the amp and your subs and don't want to risk frying your alternator I would suggest these upgrades. Also you want to make sure the power is clean and unclipped and you will have absolutely 0 issues. I'd set it with a dd1 if possible. I just purchased a an saz2500 myself and I'm also about to purchase a couple sa12s. They definitely need more than rated power to really shine the way they should but you have to make sure its clean power. IMO you should make sure the power is clean regardless of power...pushing more than rated just increases the chances of failure even more if you're clipping.

yea I was more concerned with weather or not 6-6.5 cubes would be sufficient to still sound good and also making sure I was good on the port area and port per cube. I realize this is on the lower half of the spectrum (3-4 cubes each) but I figured that sending this much power to them being on the lower side wouldn't be such a bad idea anyways. I've seen some who recommend 3-3.5 each at 34 hz and others seem to think if they're not in 7 cubes plus it's going to be crap. Just a lot of different oppinions. If I was putting rated powre on them then yes I would need 7 cubes at minimum to maximize efficiency but putting double the rms on each them. How much port area should they have? how much per cube? I've heard about 14-15 sq in per cube?

I can make six 4 in aeros, three 6 in aeros or one 10 in aero work but I don't think either of those will fit on the face along with two 15 inch woofers this is the reason I was going to do slot I can't seem to make aeros work. I can get 6.5 cubes or so if they are inverted at around 34-35 hz with 14-15 sq in if port per. I figured 3.25 net each would be good at this power level, no?

Making it 3 inches longer tunes it about 33

Well I figured out a way to use a single 10 inch aero 16 inches long and leaving it 10 inches (ports width) from the back wall of the enclosure that leaves it sticking out about 4 inches and should still give me the 10 inches or more I need from the roof of my car. This tunes it right at 35 hz with right at 7 cubes after displacements and 10.67 sq in of port per cube which with an aero should be just right. Will this work? Where can I land a 10 inch aero? Max dimensions doing subs and port up like I need at 22 inches top to bottom 19.5 inches front to back and 39.5 inches wide. This should work well. I wanted it tuned a little lower like 33 or so but I hear 34-35 works well with sa15s. Thoughts? If I make it 3 inches longer it will stick out 7 inches and I'm not sure if that will give it a full 10 inches of space between the end of the port and the roof of the car. How important is that anyways? I wanna smash lows but get loud and sound good all around too. Thanks for the help Michael

i can do 6.04 cubes for 2 sa 15s at 33 hz 90 sq in of port or 14.9 per....i'd have to invert them that way. Going to be running an saz2500 on them...possibly at .5 ohm (havn't decided) so there's plenty of power on tap. I can also do 6.06 cubes at 34.5 hz 90 sq in of port or 14.06 per and I wouldn't have to invert them this way. Last but not least I can do 35.23 hz in 6.21 cubes 90 sq in of port o 13.74 sq in per. I'm working with limite space in a 03 focus hatch...I don't wanna take the back seats out it's my daily driver I don't wanna go with one sa15 and I don't wanna do sa12s unless I HAVE TO. I've been told this is too small but I've seen several other people running theirs in 6-6.5 cubes with great results ecspecially with this kinda power on tap. They also say 3-4 cubes per on the site...I figure stay toward the 3 number on decent amounts of power going to them. On that last one tuned to 35 I could invert and have 6.55 net cubes also. I think this will be fine with the power i'm running my only worry is the port area...is it enough? can someone please chime in. I read on another forum a guy had his two sa15 in 6 cubes net at 34-35 and he said it played music well from 25 up to 70 where he has his filter set. They will be subs up port up slot port. I've tried aeros and I'd rather not do those I had trouble making it work in my space to a tuning i liked and enough port area etc. thanks! michael