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2nd Generation
audio guys...got a wiring question
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<blockquote data-quote="N A Rush" data-source="post: 9110188" data-attributes="member: 6349"><p>I would like to address your question again, but I have written it a couple of times. Each time is sounds as if I am coming off as a @$$. So please dont take it that way...</p><p></p><p>I believe my original answer was there is no perceived benefit to using a third sub. In order to benefit from the increase surface area (3db gain) you would have to double the surface area thereby requiring a fourth sub. (Thats where the 4th sub came into play).</p><p></p><p>4 Kicker L7s in 12" require between .88 - 2.0 ft3 of internal air volume. With the limited space the Lightning's present obtaining 8 cubic feet of air space is impractical. </p><p></p><p>You could reduce the internal air volume to the minimum requirement of .88 that still places total air volume at approximately 2.5 feet. In a Lightning it's do-able but extremely difficult. Then you have to deal with the side effect of a small enclosure, i.e. limited excursion of the cone. </p><p></p><p>If the cone is excursion limited it will be unable to move as much air. The more air the sub can move the louder the system will sound (higher SPL).</p><p></p><p>I am glad you decided to go with the 2 sub setup. With that setup you can create a larger sub enclosure and get more excursion from the sub and move as much air from the 2 subs as you would from 4 sub with limited volume.</p><p></p><p>The increase volume will as extend the low end frequency response, while not physically increasing SPL it does create a phycological effect of having done so...</p><p></p><p>Now the benefit of a smaller box is the increase damping effect it has on the cone. This damping effect allows the sub to transient sound more effectively. This is why a small box sounds better with Rock music while a larger box will sound better for Hip-Hop.</p><p></p><p>It all depends on the level of sound quality and the type of music you listen to. Not sure how old you are but I get the impression that you are younger that I, and younger people tend to like the bass louder which is why I recommend the 2 dual 4s.</p></blockquote><p></p>
[QUOTE="N A Rush, post: 9110188, member: 6349"] I would like to address your question again, but I have written it a couple of times. Each time is sounds as if I am coming off as a @$$. So please dont take it that way... I believe my original answer was there is no perceived benefit to using a third sub. In order to benefit from the increase surface area (3db gain) you would have to double the surface area thereby requiring a fourth sub. (Thats where the 4th sub came into play). 4 Kicker L7s in 12" require between .88 - 2.0 ft3 of internal air volume. With the limited space the Lightning's present obtaining 8 cubic feet of air space is impractical. You could reduce the internal air volume to the minimum requirement of .88 that still places total air volume at approximately 2.5 feet. In a Lightning it's do-able but extremely difficult. Then you have to deal with the side effect of a small enclosure, i.e. limited excursion of the cone. If the cone is excursion limited it will be unable to move as much air. The more air the sub can move the louder the system will sound (higher SPL). I am glad you decided to go with the 2 sub setup. With that setup you can create a larger sub enclosure and get more excursion from the sub and move as much air from the 2 subs as you would from 4 sub with limited volume. The increase volume will as extend the low end frequency response, while not physically increasing SPL it does create a phycological effect of having done so... Now the benefit of a smaller box is the increase damping effect it has on the cone. This damping effect allows the sub to transient sound more effectively. This is why a small box sounds better with Rock music while a larger box will sound better for Hip-Hop. It all depends on the level of sound quality and the type of music you listen to. Not sure how old you are but I get the impression that you are younger that I, and younger people tend to like the bass louder which is why I recommend the 2 dual 4s. [/QUOTE]
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audio guys...got a wiring question
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