Évaluations - 2, GPA: 3 ( )

Fabricant : ARC Audio Taille : 196.78 kb Nom Fichier : Langue d'enseignement:

All woofers make heat. It is possible to dissipate only so much of this heat.Tlie woofer can handle as much as twice its rated RMSpower for short periodsTliisistheMAXpower rating. Continued use of this woofer at greater then the RMSpower rating will result a damaged (burnt)voicecoil.Tliisdamageis considered abuse and is NCR"covered under the warranty. Small Amp Myth Under powering a woofer is fine.This woofer will suffer no damage from a 100 watt amp if it iscorrectly tuned. However, even a small amp that is being overdriven (clipped) can destroy a sub. Use your power wisely. Clipping can be heard as a dull thud orapopping sound.If you hear any change in thetoneof your subwoofer this is a danger sign.TURN IT DOWN. If you want more volume get a bigger amp or add another woofer. Physics "Energy cannot be created ordestroyed,only changeforms". What doesthis mean?^ur amp does not make power, it takes power from your battery and converts it into a different form. The subwoofer isjust another kind of converter. It changes AC voltage from the amp into changes in air pressure (that's all sound is) and HEMTTie more energy being converted the more heat. Aspeaker can not reproduce DCvoltage (produced when an amp clips) but thisenergy must go somewhere. It ¡sail converted into heat.Tfiis is why clipping isso dangerous to a speaker. Agreat 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.Tliisenergy is not being converted into sound. In short, the stronger the box the less energy will be lost. Sd 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 screwsor nails. Make sure the enclosure will fit and that you have adequate room to get it in and out of the vehicle. Calculating EnclosureVblume It isdifficult togiveexact boxdimensionsthat areuniversal for all cars and trucks. It isfor 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 Vblume 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 cubicfeet.To do this, you must divide the cubic inch total by 1728. Example 1512 cu in ^1728= .875 Cubicfeet. Calculating Internal Vblume 1)To calculatethe internal (net)volume of the above box you must first multiply thethicknessof the wood you are using by Two (2). Example:%"x2 = 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 (HxWx D) Example: 10.5" x 12.5" x 7.5" = 984.375 cubic inches....

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