Help building box for 2 12" sundown x's

[thefourth]

WOW, two 1250W subs on an amp that puts out 5500W. That's double the RMS. If you give that box the factory spec airspace, I don't foresee them lasting long. Triple joints, coils, and soft parts may not like you very much.

I also agree with the aero port suggestion. A single 8" is likely what I'd want. That would be 50" of port.

This

[Gil Loyola]

WOW, two 1250W subs on an amp that puts out 5500W. That's double the RMS. If you give that box the factory spec airspace, I don't foresee them lasting long. Triple joints, coils, and soft parts may not like you very much.

I also agree with the aero port suggestion. A single 8" is likely what I'd want. That would be 50" of po

WOW, two 1250W subs on an amp that puts out 5500W. That's double the RMS. If you give that box the factory spec airspace, I don't foresee them lasting long. Triple joints, coils, and soft parts may not like you very much.

I also agree with the aero port suggestion. A single 8" is likely what I'd want. That would be 50" of port.

Yeap doble the power.....well i tryied one of the subs on a hifonics collossus or however its spelled and its sopossbli rated at 3200 rms at 2ohm and the sub took it full volume without a box just free air

[Gil Loyola]

WOW, two 1250W subs on an amp that puts out 5500W. That's double the RMS. If you give that box the factory spec airspace, I don't foresee them lasting long. Triple joints, coils, and soft parts may not like you very much.

I also agree with the aero port suggestion. A single 8" is likely what I'd want. That would be 50" of po

WOW, two 1250W subs on an amp that puts out 5500W. That's double the RMS. If you give that box the factory spec airspace, I don't foresee them lasting long. Triple joints, coils, and soft parts may not like you very much.

I also agree with the aero port suggestion. A single 8" is likely what I'd want. That would be 50" of port.

Yeap doble the power.....well i tryied one of the subs on a hifonics collossus or however its spelled and its sopossbli rated at 3200 rms at 2ohm and the sub took it full volume without a box just free air

[Gil Loyola]

They should handle the power im pretty sure

[gr8handogoatness]

Well on the hifonics you didn't get the full power they claim. They are overrated, not as much as some, but don't do rated power. The crescendo? well lets just say that you shouldn't judge the capabilities of this sub by how it performed on a hifonics at 2 ohms.

[CleanSierra]

Good luck. It's not safe to give you a box design for those subs. I sure as shit wouldn't want to be blamed for a failure of the subs because you decided twice the RMS a good idea. Wire at 2 ohms or get some subs that will handle the power, like AA Mayhems.

[Gil Loyola]

Good luck. It's not safe to give you a box design for those subs. I sure as shit wouldn't want to be blamed for a failure of the subs because you decided twice the RMS a good idea. Wire at 2 ohms or get some subs that will handle the power, like AA Mayhems.

I guess ill be getting a smaller amp now....how does a 3500 crescendo sound its still more than what there rated at but its less power

[CleanSierra]

It's a much, much better match than the BC5500, and an acceptable amp to run on those subs.

[john253a]

Idd still do 4net with 2x 6" aeros or 70-72sq" slot

[Swordlordboy1234]

Running a true 2500-3500 RMS amp on good electrical to those subs is a good decision. Any more and you might have issues. Either that or your gonna have to get good at rebuilding subs.