First off..... Too much power? also, I need some suggestions on a box build for my trunk. Currently have 2.5cuft per sub; 85sq in port; tuned at 32hz; port and subs firing into the vehicle. Lows were BEAST, but I'm sure theres a better design out there.
Check out a 32 vs 38 tuning (red) at 5 cubes for the DD9512:
That's before cabin gain, so your F3 should be able to reach the low 30s easily with higher tuning being higher tuning more efficient, I think 36Hz is a good balance. Some people seal off trunk type of vehicles. If you have the space you can look at a 4th order bandpass.
On the amp just source good power clean signal and set your gains right.
Thanks. I had the 2 9512s, Dual 2ohm. wired at .5ohm on the M4a. Voltage didn't drop, amp never clipped. Gains were really low, but one sub ended up blowing. Box designs are not my strong point so I just went with DD recommended size/port and tuned lower. It's a Cadillac DTS trunk, subs firing in through the center armrest, also removed the factory 10" sub from the rear deck. Trunk is completely deadened. I'll try and get you some dimensions on what I can fit and maybe you can help me with the actual design.
I'll have to measure it out tomorrow. But it is at 2.5cuft per chamber, with a center port of around 14.5 x 5.5. Will the subs perform well in 1.75cuft per sub? I've got a shop, so I can build almost any design... but having the time to do it is the problem. I'll try and get some more info for you tomorrow or monday because I don't have the box on hand right now. Basically anything is a possibility on this set up.... The previous box was very loud on the lows, and I was happy with it... just looking to step it up to the next level. BTW, what program did you use to get the graph?
Heres my options for the next set up that will happen in about 2 weeks... 4 9512d4 wired to .5ohm on a DD M4a 2 9512d4 wired to 1ohm on a DD M4a
It seems the 4 12s and more power would be louder.. but I'll only be able to do 1.75cuft roughly per sub(minus displacement) and I'm not sure if thats enough.
I'll have to measure it out tomorrow. But it is at 2.5cuft per chamber, with a center port of around 14.5 x 5.5. Will the subs perform well in 1.75cuft per sub? I've got a shop, so I can build almost any design... but having the time to do it is the problem. I'll try and get some more info for you tomorrow or monday because I don't have the box on hand right now. Basically anything is a possibility on this set up.... The previous box was very loud on the lows, and I was happy with it... just looking to step it up to the next level. BTW, what program did you use to get the graph?
Heres my options for the next set up that will happen in about 2 weeks... 4 9512d4 wired to .5ohm on a DD M4a 2 9512d4 wired to 1ohm on a DD M4a
It seems the 4 12s and more power would be louder.. but I'll only be able to do 1.75cuft roughly per sub(minus displacement) and I'm not sure if thats enough.
