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Manafacture: ARC Audio File size: 173.63 kb File name: Language of manual:

What does this mean? Your amp does not make power, it takes power from your battery and converts it into a different form. The subwoofer is just another kind of converter. It changes AC voltage from the amp into changes in air pressure (that's sound is) and HEAT. The more energy being converted the more heat. A speaker can not reproduce DC voltage (produced when an amp clips) but this energy must go somewhere. It is all converted into heat. This is why clipping is so dangerous to a speaker. A great deal of energy can also be lost in the enclosure. If your box is not strong enough the sides will flex. It takes energy to flex the box. This energy is not being converted into sound. In short, the stronger the box the less energy will be lost. So build it Strong. This same thing can happen to the car body. Sound deaden, it will sound better and hit harder. Building an Enclosure It is recommended that you use 3/4" MDF (Medium Density Fiberboard) to build an enclosure. Glue all your joints with yellow glue and secure then with screws or nails. Make sure the enclosure will fit and that you have adequate room to get it in and out of the vehicle. Calculating Enclosure Volume It is difficult to give exact box dimensions that are universal for all cars and trucks. It is for this reason that you must be able to calculate the space in which you have available in order to achieve the proper air volume required. Calculating External Volume 1) To calculate box volume, measure the outside Width x Height x Depth of the enclosure. Example 12" x 14" x 9" = 1512 cubic inches. 2) Next you must convert cubic inches into cubic feet. To do this, you must divide the cubic inch total by 1728 . Example 1512 cu in 1728 = .875 Cubic feet. Calculating Internal Volume 1) To calculate the internal (net) volume of the above box you must first multiply the thickness of the wood you are using by Two (2). Example: ." x 2 = 1 1/2" 2) Next subtract 1.5" from each of the outside measurements of the box. Width 12" -1.5" = 10.5" . Height 14" -1.5" = 12.5" . Depth 9" -1.5" = 7.5" 3) Multiply the new totals (H x W x D) Example: 10.5" x 12.5" x 7.5" = 984.375 cubic inches. 4) Next you must convert cubic inches into cubic feet. To do this, you must divide the cubic inch total by 1728. Example 984.375 1728 = .5696 cubic feet. For additional information call ARC Audio Tech support at: 209-543-8706 ARC Audio 4719 Greenleaf Cir Modesto CA 95356 Phone:209-543-8706 ...

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