Hello everyone! I am new to this forum, but I hope I will still get some help from you.
I want to start a new project for a subwoofer. I never build one before, but I wold like to try. So my problem is : for a Fiat Albea ( Siena ); what type of sub enclosure should i use,and type of pdf, (if you hape pics, or tell me where to look) and the speaker itself for that type of box. I want something about 250w - 300w, because somebody told me it is enought for a medium sound system.

I`m sorry if my english is poor... I`m not from around there .
Pease help!
Thank you!

ok, thanks for all the help.

it doesn't matter what type of vehicle you have. The same principles apply. Use a solid, easy to work with wood or wood product, most use 3/4" mdf(medium density fibreboard), as it's very hard (won't flex as much as plywood etc...), cheap, and easy to work with. You have to decide how much space you want to dedicate to your subwoofer. If it's 1 cubic feet, then you want to look for a subwoofer that works well in that space, with the power you have available for it (250-300watts in this case). You can use a sealed design (acoustic suspension), or ported (bass reflex). Acoustic suspension generally are easier to build (it's just a sealed box), are usually smaller, and give good overall performance. Bass reflex boxes are harder to build, are larger, and need to be tuned for a specific resonant frequency by adjusting the volume of the port (length and cross section), but they are more efficient (louder with the same power) and can sound as good as a sealed system in terms of sound quality if properly designed. There are lots of websites that show you the steps to build a subwoofer, just google "building a subwoofer". My advice if you're looking at 250-300watts, is to stay with an entry level sub from a good brand name company. These tend to be a little more efficient, meaning they will play louder with less power. Depending on your budget and what's available in your area, you should be able to get a good subwoofer system for your car.

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