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<blockquote data-quote="C21H30O2" data-source="post: 8315562" data-attributes="member: 659865">Had a few beers tonight so forgive me if this post could have been written better....Not too familiar with this particular sub but this could be normal. Voice coil heats up, former then heats up, cone/dustcap then heats up. Subs aren&#039;t very efficient and most of the power you deliver to them ends up getting wasted and gets converted into heat. This heat has to go somewhere. Some gets dissipated into the air, the top plate, pole piece, voice coil, etc. until it trickles up into the cone/dustcap.How much actually gets to the dustcap depends on several variables as mentioned above (ex. amount of power, voice coil material, former material, cone material, etc.). Is it a problem? Again, it depends. If it&#039;s just slightly warm, I probably wouldn&#039;t worry about it.On a side note, setting your gain with a DMM doesn&#039;t really guarantee anything unless all the music you play is recorded at the same reference level as the tone you used to set the gain. As this likely isn&#039;t the case, you need to be careful as you could still cause clipping.</blockquote>

[QUOTE="C21H30O2, post: 8315562, member: 659865"] Had a few beers tonight so forgive me if this post could have been written better.... Not too familiar with this particular sub but this could be normal. Voice coil heats up, former then heats up, cone/dustcap then heats up. Subs aren't very efficient and most of the power you deliver to them ends up getting wasted and gets converted into heat. This heat has to go somewhere. Some gets dissipated into the air, the top plate, pole piece, voice coil, etc. until it trickles up into the cone/dustcap. How much actually gets to the dustcap depends on several variables as mentioned above (ex. amount of power, voice coil material, former material, cone material, etc.). Is it a problem? Again, it depends. If it's just slightly warm, I probably wouldn't worry about it. On a side note, setting your gain with a DMM doesn't really guarantee anything unless all the music you play is recorded at the same reference level as the tone you used to set the gain. As this likely isn't the case, you need to be careful as you could still cause clipping. [/QUOTE]

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