pour calculer un litrage d'un caisson

bonjour ben je suis nouveau sur le forum .j ai un probleme j ai acheter un sub atomic mais je ne sais pas comment calculer le litrage de mon caisson avec un event sauriez vous m aider svp

voici les caracteristique du sub merci d avance

Rigid Die cast aluminum basket
* Organic long fiber non-pressed cone body for accurate tight bass
* Highly damped Kevlar reinforced cone body
* Extended neck joints on cone, coil and spider strengthen the integrity of moving structure for high power capacity
* Compressed mounting ring gasket
* vented coil for extra heat dissipation
* 2-1/2 inch high temp aluminum voice coil
* Extended, machined cut one piece back plate
* Powerful 1 inch thick 90 oz high energy magnet
* 2-1/2 inch long excursion motor structure
* Reinforced resin impregnated polycotton spider extend the life span of the speaker from Material fatigue and collapse.
* Integrated heavy duty lead wire on spider prevent short circuit and melt down
* Dome shape dust cap design
* Low carbon front and back plate
* Vented magnetic gap technology
* Laser etched, machined and chromed back plate
* 1000Watts


desoler si c ecrit en englais