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Message: <blockquote data-quote="osix" data-source="post: 2640070" data-attributes="member: 573893">Correct me if i am wrong ,heat is produce during movement of the voice coil .thus special glue is use to endure the heat . - usually Vents is drill to allow air onto the voice coil section to cool it down . which some in the industry call it air cool or air flow .The dust cap movement itself is a form of cooling . as every motion will create flowing air . in return cooling the voice coil .- some design even go to extent to have liquid metal in the voicecoil to help cool it down .and of cos the force from the action itself plus alot of vent or drill hole can also act as cooling  for the sub itself .feel free to correct me if i am wrong  or you can add more info to it .</blockquote>

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