Im looking at which one to get my box is 6.3 cubic feet ported at 27 hz, according to recommendations the btl is the only choice but i only have a weak 1500 watts RMS at 2 ohms and don't want to get 4 batteries and 3 alternators I don't really care about sound quality as long as it sounds better than my kicker cvx 12's i got right now and I want it to hit all the notes right now it only hits low notes and pretty much doesnt even play high bass that you hear in most songs

18 inch Q sealed

at 27 hrz no wonder your not hitting any high bass notes

Yeah a Q wud be straight ported too..

But ive heard good things about Q's sealed..

What are the box dimensions?

I would look at changing that tuning which will add net volume.

You could run an 18 or a pair of 15's in that airspace.

yup, ive done 18Q both sealed and ported. its up to you though

yea im thinking about having the front recut for 2 15s the box is something like (off the top of my head) 39w 24d and 19h something like that i know its 6.2 cubic feet if i cut the port and made it a inch shorter it would bring it up to like 30 hz

yea it's a double slant box like trapezoid shaped i want to make holes for 2 15s instead of 12s and redo the top so it has a monster port thats like 24" x 6" by whatever height it takes to make it tuned to 32hz and hopefully that will take the box volume down in the 5 cubic feet range i just blew 2 kicker cvx 12s that were in this box for about 2 months i know the box was way to big for those subs i specifically told the guy to make it 4.5 cubic feet and tuned to 32 hz when i checked out the deminsions i realized he had made it like 6.2 cubic feet and tuned to 27 hz which is so low most songs are a lot quiter than my old 3.0 cubic feet box the 3 cubic feet was tuned to 29hz

id retune to like 32-34hz and go bl it would love the power and hit the highs nice. dont go wider on the port just shorten it.

bl vs q how different do you think it will sound for power im gonna be using at first my jbl gto 1400 which puts out 1400 rms at 2 ohms not sure what it puts out at 1 ohm then later im changing to a soundstream taruntula that puts out 2000 rms at 1 ohm

with your plans and upgrade, i'd go with the BLs.

what about 2 15s vs 1 18 i know the 15s have way more cone area but which will be louder?

same power, similar enclosure size and tuning? cone area wins?

yea same power same enclosure size same tuned freq

with 2000 watts powering two subs 1000 each do i really need the bl i mean the q w/the bp option is 1500 rms each that should easily handle the amp right?

sure. i thought you were going to get 2000 watts for 1 sub.

no 2000 watts total i dont want to have to get some crazy electrical system for my system