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<blockquote data-quote="MiniVanMan" data-source="post: 2967086" data-attributes="member: 573252">It think you misread.&nbsp; You need to know the Fs (Resonant Frequency) of the tweeters.&nbsp; If the Fs is 2.5 kz, it should still be useable to about 4k with a 24 db slope.&nbsp; Maybe even lower.&nbsp; The Fs of a standard car audio tweeter is about 1.5k to about 2 k.&nbsp; Some tweeters even have a much lower Fs like the Seas Neo I mentioned.&nbsp; Generally the more expensive the tweeter, the lower it will play.&nbsp; Manufacturers understand the off-axis alignment that comes with car audio, so your top end component sets will have tweeters capable of much lower crossover points.&nbsp; To get that kind of capability out of a tweeter is hard, and therefore expensive.&nbsp; The Seas Neo is the exception and why it is such a popular tweeter.Now, don&#039;t get all caught up in the numbers.&nbsp; The true test is what sounds good.&nbsp; Driving a tweeter to it&#039;s Fs is pretty hard on it, and you&#039;re power handling decreases dramatically.&nbsp; If you&#039;re getting harshness out of the tweeter in the lower range of it&#039;s frequency response, then bump the crossover point up a bit.&nbsp; If there&#039;s a huge gap between it and the mid, then bump the mid up a bit.One of the advantages of going active is being able to design a system to your specifications, using raw drivers that meet the harsh needs of car audio, while also being inexpensive.</blockquote>

[QUOTE="MiniVanMan, post: 2967086, member: 573252"] It think you misread. You need to know the Fs (Resonant Frequency) of the tweeters. If the Fs is 2.5 kz, it should still be useable to about 4k with a 24 db slope. Maybe even lower. The Fs of a standard car audio tweeter is about 1.5k to about 2 k. Some tweeters even have a much lower Fs like the Seas Neo I mentioned. Generally the more expensive the tweeter, the lower it will play. Manufacturers understand the off-axis alignment that comes with car audio, so your top end component sets will have tweeters capable of much lower crossover points. To get that kind of capability out of a tweeter is hard, and therefore expensive. The Seas Neo is the exception and why it is such a popular tweeter. Now, don't get all caught up in the numbers. The true test is what sounds good. Driving a tweeter to it's Fs is pretty hard on it, and you're power handling decreases dramatically. If you're getting harshness out of the tweeter in the lower range of it's frequency response, then bump the crossover point up a bit. If there's a huge gap between it and the mid, then bump the mid up a bit. One of the advantages of going active is being able to design a system to your specifications, using raw drivers that meet the harsh needs of car audio, while also being inexpensive. [/QUOTE]

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