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Sundown U 15 facing up or forward?
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<blockquote data-quote="THATpurpleKUSH" data-source="post: 8630362" data-attributes="member: 615398"><p>[quote name='West1']As a noob, I&#39;ve now learned to stick with the normal design. I considered 4 sa8 v3&#39;s but reading on 8&#39;s, they tend to be more loud with minimal lows. Hence the idea of one 15" U series for a more balanced sound.</p><p></p><p></p><p></p><p></p><p>I actually thought of a pair of 15&#39;s but then that 1K will quickly turn into 2k for a bigger HO alt, amp and battery(s).</p><p>I&#39;m trying to capitalize on a sub(s) with the car power I&#39;m working with (270 mechman, FSD amp and 2 batteries). </p><p></p><p>I asked for sub down because I was trying to gut the rear seats and place the seating on top of the box in case the kids needed a ride. That did not work so now I have as much space as the door width allows.</p><p>As for BoxBuilder, I was trying to wait for Cstang but I got impatient as he was working mad hrs for a good length of time.</p><p></p><p> [USER=615398]@THATpurpleKUSH[/USER] looking back, all I see is 155cu @32hz.</p></blockquote><p></p><p>1.5cf at 32hz is what sundown recommends. What Jeff said about the surround limiting the upper freq range is true, the overall bias of the x series is a strong low end which you might not be able to overcome. Using a smaller airspace might help with transient response, you could start with adding some damping material (1inch fiberglass insulation or polyfill) to the inside walls of the box or even add some temporary 2x4s to shrink the internal volume, though it will raise tuning slightly. Thats the easiest way to experiment without building a whole new box.</p><p>[/QUOTE]</p>
[QUOTE="THATpurpleKUSH, post: 8630362, member: 615398"] [quote name='West1']As a noob, I've now learned to stick with the normal design. I considered 4 sa8 v3's but reading on 8's, they tend to be more loud with minimal lows. Hence the idea of one 15" U series for a more balanced sound. I actually thought of a pair of 15's but then that 1K will quickly turn into 2k for a bigger HO alt, amp and battery(s). I'm trying to capitalize on a sub(s) with the car power I'm working with (270 mechman, FSD amp and 2 batteries). I asked for sub down because I was trying to gut the rear seats and place the seating on top of the box in case the kids needed a ride. That did not work so now I have as much space as the door width allows. As for BoxBuilder, I was trying to wait for Cstang but I got impatient as he was working mad hrs for a good length of time. [USER=615398]@THATpurpleKUSH[/USER] looking back, all I see is 155cu @32hz.[/QUOTE] 1.5cf at 32hz is what sundown recommends. What Jeff said about the surround limiting the upper freq range is true, the overall bias of the x series is a strong low end which you might not be able to overcome. Using a smaller airspace might help with transient response, you could start with adding some damping material (1inch fiberglass insulation or polyfill) to the inside walls of the box or even add some temporary 2x4s to shrink the internal volume, though it will raise tuning slightly. Thats the easiest way to experiment without building a whole new box. [/QUOTE]
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Sundown U 15 facing up or forward?
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