Recent content by Anh

Doubt it. One way Xmax is around the same for both 15 inch models , and you're more likely to make the difference by the choice of enclosure that just the drivers themselves.

Okay, so what kind of sound are you looking for from these subs then? And what is your boot space large enough? The bigger it is the more easier you can make choices on what kind of box(es), since you have 2 subs. A well built sealed box is a safe bet, and you wont lose that much hearable bass...

It's basically the same as a tube port. But you get the area of the port by multiplying port width by port height.

Well, atleast you have the wattage no matter what choice you make. You can make any 2 Type-R's or a single RE 15 loud, but since you're looking for SQ too, then you should really try and demo the subs if you can, otherwise you're going to have to work on a box that gets the type of sound you...

Displacement, the exact volume of the driver (is that what you mean?) or is this the actual displacement of the cone area x excursion? If you cant find the manufacturer figures, then you just need to make a rough calculation of the diamensions of the driver. You can get the area of the magnet x...

Most likely not. Any damping from materials simply takes away the total air you have inside the box, and so causing greater roll off at the bass frequencies. You probably can HEAR deep bass better by damping, even though the sub isnt creating any more, simply because the high-bass and low mids...

Well, how about the RMS power handling rating of the 12"s.? And if you can provide the xmax and cone area numbers, then that would be a bonus.

Any cavity - be this a tube shaped or a rectangular will make the frequency you want to be 3dB louder at the most. The desired frequency depends not JUST on the length of the port, but it is the relation between length, the port area (the size of the hole), AND the volume of the port AND the...

You're going to have to be more specific. A pair (or a single) Type R 12'(s) can "hit hard" but you need to be sure what kind of bass? Low bass? Mid bass? Alpine Type-R's are more mid-entry sound quality subs rather than SPL, and they recommend a sealed box, which should give good mid bass (50...