hey guys just joined up here...i have around 3k posts over at caraudio.com forums

right now i have a single 18" Fi Q in 6.5 cubes ported on 1000 watts in my jeep grand cherokee

ive heard tons of things about the MJ18..

i am trying really hard to decided if i should change it to 2 MJ 18's sealed in around 7 cubes with 400 watts a piece...

from everyones experience what do you think

will i gain any output?

i am gaining cone area

but loosing RMS/sub

i am also going from ported to sealed because i am not sure if i could fit the MJ's ported.

let me know

thanks guys

The Q is a very nice driver. If you were to go with the MJ's, from experience, I know they do not need monster boxes.

Is your only goal output?

We put an MJ18 in 3.5cf sealed and the output was suprising to say the least @ 400w. It was really loud and sounded really nice doing it, 2 of the them would be great, but if your just looking for SPL only I'm not so sure I'd switch as the gain would probably not be that much.

but you are saying that there will be a gain?

and if they do not need that much room....what would you suggest for two ported? and what would you suggest for two sealed?

also id like to have about the same output as the Q, but id like to sound good and get low...let me know thanks for the replies

but you are saying that there will be a gain?

and if they do not need that much room....what would you suggest for two ported? and what would you suggest for two sealed?

also id like to have about the same output as the Q, but id like to sound good and get low...let me know thanks for the replies

Why not get two maw 15's. You could run them ported, and the box would still be smaller than the sealed MJ18.

band pass?

what about band pass...i just want to know weather you guys think ill be gaining anything...either SQ, or output

I was just thinking the one things is that you could get 8 ohm MJ's and get a single amp that does power at 2 ohms or 4 ohm MJs and an amp that does power at 1 ohm.

I would do two in a band pass box tuned to 70hz

I would do two in a band pass box tuned to 70hz