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power acoustik car audio 12 excursion audio subwoofer
Cut the power wire approximately 6-8" long. Be sure to adjust the bass and treble as well as the volume to levels that are comfortable to you. If you remember these two rules when you are building your enclosure, and you'll be much happier with it in the long run. Below is a diagram of what sound looks like as a wave:A sound wave like the one above goes through a cycle of 360 degrees. Remove the radio so that you can access the connections on the back. This box should give incredible amounts of output when it is combined with the 12dB/octave boost provided by most automobiles.
audio car elect find
Wood is heavy, solid, and it is very easy to attach together (even for the newbie), making it pretty easy to create a good-sounding enclosure for it. Connect the woofer and tweeter leads to the crossover with the attached quick slides. It's very important for you remember that the enclosure has to be completely airtight because air leakage reduces the system's power-handling capacity and causes distortion. As to which are better, I dont know, but here are some that are very much worth a good look, and they are meant for newbies like you. When this starts to go back to rest it then travels another 90 degrees to the 180 degree mark before it begins moving completely rearward to 270 degrees. Most of the time, you'll need to add braces only for boxes that have internal volumes of more than 5 cubic feet anyway.
Please note that these were located at http://www.caraudiohelp.com/plans_for_subwoofer_enclosures/plans_for_subwoofer_enclosures_sealed.htm
Plan #1 - Sealed Subwoofer Enclosure
WinISD recommends a 1.55 cubic foot box for our sealed enclosure. We'll achieve this by using 3/4 " MDF for the enclosure with external dimensions of 15.5" x 24 " x 10 ". This will be a simple rectangular box. Modeling the enclosure we see that it has a 87 dB sensitivity and a -3dB (half power) frequency of 42 Hz. This box should give very strong output when it is combined with the 12dB/octave boost provided by most automobiles.
JL Audio 10W1
SPL (1W/1m) - 87 dB
-3dB @ 42 Hz
Here is the layout of our subwoofer enclosure. We will need to cut the following pieces:
SIDE QUANTITY DIMENSION
TOP/BOTTOM 2 24" x 10"
FRONT/BACK 2 24" x 15.5"
SIDES 2 15.5" x 10"
JL Audio 10W1 - 1.55 cubic ft
Plan #2 - Vented Subwoofer Enclosure
WinISD recommends a 3.2 cubic foot box with a 24 Hz tuning frequency for our vented enclosure. Using a four inch port we'll need a vent that is fifteen inches long. We must take this volume into account. The volume of a cylinder is pi*r2*h, or (3.14)*(2)2*15 = 188 cubic inches. Divide this by 1,728 to get cubic feet and we add 0.11 cubic feet to the enclosure.
We'll achieve this by using 3/4 " MDF for the enclosure with external dimensions of 19.5" x 30" x 12.5". This will be a simple rectangular box. Modeling the enclosure we see that it has a 87 dB sensitivity and a -3dB (half power) frequency of 24 Hz (the tuning frequency). This box should give incredible amounts of output when it is combined with the 12dB/octave boost provided by most automobiles. This is to be expected with a box this large. In practice we would probably make the enclosure half this size, or similar to the size of the sealed enclosure.
JL Audio 10W1
SPL (1W/1m) - 87 dB
-3dB @ 24 Hz
Here is the layout of our subwoofer enclosure. We will need to cut the following pieces:
SIDE QUANTITY DIMENSION
TOP/BOTTOM 2 30.5" x 12.5"
FRONT/BACK 2 30.5" x 19.5"
SIDES 2 19.5" x 12.5"
JL Audio 10W1 - 3.3 cubic ft