what do you think?

[WrenchGuy]

30hz is kinda low for most every day music. i do all crazy boxs and what do i have in my truck a prefab lmao.

did u every see what it hit? how many db's
in my old truck i had a sealed box with 2 12 esclipse alums and a hifo bx1500d and i pulled a 147. its was a tight clean bass too. but that shit got jacked fml

Actually lowest tuning possible is best for daily listening. With the right front stage everything is more dynamic and covers the spectrum.

If it were an all out SPL vehicle you would find yourself tuning from mid to high 40's.

I had 148.3 @ 37hz with 2 BTL 18's in 16 cubes at 33 hz on a XX Cyclops 4000D.

 

[2LOUD4U]

yah isent like 32 the best tunning for daily driving?

 

[blueflamed03]

no, 32 is just the magical number

 

[2LOUD4U]

haha sounds good to me that what the btl box is set at and ill be able to buy the subs soon because on superbowl bets=]

 

[path2spl]

do 2 18s in a 4th order with a 350sq inch port tuned to 48hz

 

[blueflamed03]

4th order, huge box and IMHO, 48hz too high for 18's, daily.

 

[WrenchGuy]

4th order, huge box and IMHO, 48hz too high for 18's, daily.

Barely fits if at all....lol For one 18. Have yet to build it.

 

[path2spl]

that pic is a design of a 6th order btw...48hz is will be different in a 4th order it will alow you to get the lows while still getting the high end. you can fit a 4th order in the denali xl for sure. i can fit 20 cubes in my tahoe not touching the back hatch. you can make the box 49 wide 43 deep and 24 high and still have more to spare in the xl

 

[WrenchGuy]

that pic is a design of a 6th order btw...48hz is will be different in a 4th order it will alow you to get the lows while still getting the high end. you can fit a 4th order in the denali xl for sure. i can fit 20 cubes in my tahoe not touching the back hatch. you can make the box 49 wide 43 deep and 24 high and still have more to spare in the xl

Bandpasses are not a daily enclosure. They are too peaky around tuning frequency and the bandwidth isn't very large.

Low as the driver will allow is the best for daily listening. Actually high 20's is where its at...lol

 

[Eagle]

x2... plus you should still run a highpass filter at or just below the tuning frequency.

That means those 18s are playing ~45 hz and up. About what a pair of 8 Inch mids will play.