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<blockquote data-quote="T3mpest" data-source="post: 6607841" data-attributes="member: 560148"><p>a tweeter will play a 40hz tone, just not very loudly.&nbsp; An idmax can play&nbsp; a 40hz tone at 110db&#039;s in half-space with no gain.&nbsp; They have over 25mm of xmax which is more than enough to play very loud sealed in a car especially.&nbsp; In a car that 110db is usually upwards of 135-140 depending on the car&#039;s gain.&nbsp; Whether that loud enough for you is up to you.&nbsp; Again since the box size for a sealed box is half the size of a ported box usually, you could simply use 2 sealed and gain 3db&#039;s even when you split power which makes up for alot of extra SPL you gain by porting, while keeping the response the same.&nbsp; Again trade-off&#039;s and goals.&nbsp; Regardless the idea that any sub can&#039;t play below 40 in a car is honesty laughable.&nbsp; Especially when the sub in question has 1000 watts of power handling and as much excursion as they do.</p></blockquote><p></p>

[QUOTE="T3mpest, post: 6607841, member: 560148"] a tweeter will play a 40hz tone, just not very loudly. An idmax can play a 40hz tone at 110db's in half-space with no gain. They have over 25mm of xmax which is more than enough to play very loud sealed in a car especially. In a car that 110db is usually upwards of 135-140 depending on the car's gain. Whether that loud enough for you is up to you. Again since the box size for a sealed box is half the size of a ported box usually, you could simply use 2 sealed and gain 3db's even when you split power which makes up for alot of extra SPL you gain by porting, while keeping the response the same. Again trade-off's and goals. Regardless the idea that any sub can't play below 40 in a car is honesty laughable. Especially when the sub in question has 1000 watts of power handling and as much excursion as they do. [/QUOTE]

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