Subwoofer In Car
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How To Install A Car Subwoofer
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18 Inch Car Subwoofer
Car Subwoofer
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If you've seen a car that has an in-dash equalizer the chances are very good that the vertical sliders were arranged in the same way as the Fletcher-Munson curve. In such cases, the entire dash panel may need to be removed. Here is the layout of our subwoofer enclosure.
best car sub woofer
The RCA cable will run from the amplifier and connect to the RCA or preamp outputs on your radio. Don't confuse fiberboard with particle board however as they are quite different. At the resonance frequency of the subwoofer system, the impedance will either peak at its highest level (sealed enclosures), or it is going to dip to its lowest level (ported and band pass enclosures). Adjust the crossover, gain, and boost according to your preference. Do not buy speakers from salespeople that do an A/B comparison of loudspeakers for you.
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