need help with three sub setup

[internaldifference]

i have a jeep cherokee two door and i am trying to build up a system for the rear but i am unsure of the box design i want for it . i have three twelve inch subwoofers all are dvc 4ohm voice coils. i was thinking of building a box that would hold all three and have the outer two ported and the middle one sealed. any suggestions. i have two different amps one runs two and the other runs the other one. all my ohm loads are correct just need to know how to build the box for these so they will sound their best. i talked to the guys from the company that makes them and they do not seem like they know anything about their product. the speakers are addictive audio v1 12 inch dvc 4ohm. subwoofers. and i have three of them.

[Team_DC-Derrick]

if you have the height, just make it a slot port on the bottom going all away across the bottom... or partially

[MrSkippyJ]

Get one amp that can run all 3 and use a single box.

[Loudcivic]

all sealed or all ported. to be honest with you i would only run 2 of them and one amp. depending on your biggest amp you could run all 3 on one amp at a 2.67 ohm load and be fine. i have never heard of that brand and you didnt list your amps and other equipment

[internaldifference]

thats the reason im using two amps one amp is 1000 watt 2ohm stable which when bridges is only 4 ohms. and the other amp is 500 watt 2 ohm stable two channel so once again 4 ohm when bridged. the two ported speakers are on the 1000 watt. run in series paralel. and the other one is just in series. i know this may not be power levels like what you guys are used to but its all i have for now. addictive audio is supposed to be right there with digital designs. from what the dealer told me. the back of the cherokee is 43 inches wide worth of space and as tall as i want but the speakers only need 1.5 cu foot of space apiece. the brochure said to use a four inch port for these speakers and i tried it but it sounded shitty. a 2 in port sounds alot nicer. i was just wondering if anyone had ever run two ported and one sealed before. and if they did what kind of box . or should i just run all three sealed or all three ported. i have to use the amps this way to keep the ohm load correct have not found a ohm load configuration for three speakers to be close to 4 ohm .

[MrSkippyJ]

thats the reason im using two amps one amp is 1000 watt 2ohm stable which when bridges is only 4 ohms. and the other amp is 500 watt 2 ohm stable two channel so once again 4 ohm when bridged. the two ported speakers are on the 1000 watt. run in series paralel. and the other one is just in series. i know this may not be power levels like what you guys are used to but its all i have for now. addictive audio is supposed to be right there with digital designs. from what the dealer told me. the back of the cherokee is 43 inches wide worth of space and as tall as i want but the speakers only need 1.5 cu foot of space apiece. the brochure said to use a four inch port for these speakers and i tried it but it sounded shitty. a 2 in port sounds alot nicer. i was just wondering if anyone had ever run two ported and one sealed before. and if they did what kind of box . or should i just run all three sealed or all three ported. i have to use the amps this way to keep the ohm load correct have not found a ohm load configuration for three speakers to be close to 4 ohm .

Either find an amp that will 700-900watts @2.66ohms or use 2 subs and find an amp that will do 500-600watts @1ohm. Use one box, either ported or sealed and call it a day

[Robert8252]

You do have space to run all 3 12's ported. When o had my 95 2dr Cherokee I had a humungo box somewhere around 6-9^ft that sat right along the seat top level.