Reddit reviews R/T 300 Enclosure Series -318-12 Alpine - Single 12-Inch Slot Vented Sub Bass Hatchback Speaker Box with Labyrinth Power Port for Alpine Subs

Building a box for the first time can be tough. If you think you can do it, go ahead. There are box calculators available on the Internet where you input the specifications of the subwoofer, also your alpine owner's manual will have all the info needed.

If you don't have the time, there are many good boxes available pre-fabricated. I bought this box for my gf's car when I installed my type r in her car.

http://www.amazon.com/gp/aw/d/B004RJ2Y6S/ref=mp_s_a_1_3/178-0194102-3245564?qid=1421395516&sr=8-3&dpPl=1&dpID=51N5q9Iuv9L&ref=plSrch&pi=AC_SX200_QL40


You might need the UK version of that.

You will see large arguments about the functions of each different type of box. To me, the both are great. I love features about each.

Sealed has a flat frequency response and the box is usually smaller. A short explanation does not mean this type is inferior to ported.

Ported has a tuned port in which the port has been tuned to a frequency (30hz-60hz typically). When the subwoofer reproduces frequencies in that range, the sound will be louder and the spl will increase. Mechanically, a ported box is more efficient in terms of heat dissipation and air flow. This means it will be nominally more efficient power wise. Boxes of this type are normally larger.

I think you're right.. my old car was running a who knows how old Sony head unit, wiring that wasn't up to par according to who I bought the sub from and my box just seemed really cheap (and was sealed and small..).


I think my plan now is to do it right, put the type R in this box http://www.amazon.com/300-Enclosure-Series-318-12-Alpine/dp/B004RJ2Y6S , have my installer wire it up properly, and buy a JL amp that runs at 500 rms @ 1 ohm.





Edit: JL only runs their amps at 1.5 ohms I believe, since my type r is wired for 1 ohm does that mean I won't be getting the most out of it?

This was my setup a few years ago

Sub

Amp

Box

I never turned the bass settings past half the power because it was ridiculous. I still miss it, the bass was extremely clean and smooth.

https://www.amazon.com/dp/B004RJ2Y6S/ref=cm_sw_r_cp_api_VPa5yb06J47F1

Sundown e12

Infinity Kappa


Image Dynamics ID12

box

As always, you'll get the most out of your sub with a purpose build box, failing that, 1 cu ft sealed.

This box looks like a fairly close match to the sundown.