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Low Earth Orbit
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3x12+2"wNL8's&4Xti4000's
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<blockquote data-quote="Ivan Beaver" data-source="post: 50551" data-attributes="member: 30"><p>Re: 3x12+2"wNL8's&4Xti4000's</p><p></p><p></p><p></p><p>But there is more to it than that. Yes you may be able to get "higher level" at the crossover point. HOWEVER- you ALSO have to look at what is happening above and below the crossover point (freq wise).</p><p></p><p>Due to fact that the drivers don't have a "perfect" response- you could end up with a "hole" on either side of crosover. If you are using a single freq for a test signal (and changing delay time) you will not see this hole(s).</p><p></p><p>So the correct alignment may end up with not quite as much "gain" at crossover-but a more even response across the overall band-which is a good phase alignment.</p><p></p><p>Agreed the "adjust time until the level is at max (or min-depending on how you do it)" method can get you close-but it is not always the best setting. But is better than nothing.</p><p></p><p>Of course figuring out which driver is the "most forward" is not always easy. Once you throw a low pass filter on a driver-the "effective time" is not the same. So the one in the "front" physically-may actually be the last one to "produce sound"-due to this filter.</p></blockquote><p></p>
[QUOTE="Ivan Beaver, post: 50551, member: 30"] Re: 3x12+2"wNL8's&4Xti4000's But there is more to it than that. Yes you may be able to get "higher level" at the crossover point. HOWEVER- you ALSO have to look at what is happening above and below the crossover point (freq wise). Due to fact that the drivers don't have a "perfect" response- you could end up with a "hole" on either side of crosover. If you are using a single freq for a test signal (and changing delay time) you will not see this hole(s). So the correct alignment may end up with not quite as much "gain" at crossover-but a more even response across the overall band-which is a good phase alignment. Agreed the "adjust time until the level is at max (or min-depending on how you do it)" method can get you close-but it is not always the best setting. But is better than nothing. Of course figuring out which driver is the "most forward" is not always easy. Once you throw a low pass filter on a driver-the "effective time" is not the same. So the one in the "front" physically-may actually be the last one to "produce sound"-due to this filter. [/QUOTE]
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