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<blockquote data-quote="Toxic Tuan" data-source="post: 6497773" data-attributes="member: 558678">I vaguely remember the vehicle but let me explain a few things if it&#039;s unclear since like &quot;OC*SS&quot; said, I didn&#039;t have &quot;direct communications&quot; with him.&nbsp; It was another installer that took care of the project.&nbsp; I know that when I worked at Advanced Car Creations, we always made sure that each and every single customer was happy before the vehicle left and there were no exceptions.Now,In regards to the tuning frequency, again I don&#039;t remember exactly, since this was a very long time ago, and I didn&#039;t have direct contact...I can still explain a few things.&nbsp; There are some designs that I&#039;ve done where a box was tuned to 70 hz, but the end result was a linear flat response all the way down to 20 hz.&nbsp; The enclosure itself is only 1 element.&nbsp; The vehicle cabin is a significant part of the total enclosure system.Let me give you 2 most simple examples:&nbsp; Well take an SUV for simplicity.&nbsp; Say we had an enclosure that was tuned to 35 hz firing towards the rear vs the same enclosure firing directly towards the front.&nbsp; The end response is completely different.&nbsp; The wavelength of the rear firing will be long and the overall tuning will be lower.&nbsp; Hence, the enclosure must be compensated for the &quot;wave development.&quot;&nbsp; The second example is a ported enclosure in a trunk vehicle.&nbsp; This system actually replicates a 6th order series tuned bandpass and models as a quasi-8th order at the dash.&nbsp; Therefore the entire tuning of the actual enclosure must be designed different.&nbsp; This is an absolute advanced enclosure design that takes an entirely different method of calculations and not just your average winisd or bbp.However, if a person were to simply ask for an enclosure calculation, non a system design, then the enclosure must be exactly as modeled.Tuan</blockquote>

[QUOTE="Toxic Tuan, post: 6497773, member: 558678"] I vaguely remember the vehicle but let me explain a few things if it's unclear since like "OC*SS" said, I didn't have "direct communications" with him. It was another installer that took care of the project. I know that when I worked at Advanced Car Creations, we always made sure that each and every single customer was happy before the vehicle left and there were no exceptions. Now, In regards to the tuning frequency, again I don't remember exactly, since this was a very long time ago, and I didn't have direct contact...I can still explain a few things. There are some designs that I've done where a box was tuned to 70 hz, but the end result was a linear flat response all the way down to 20 hz. The enclosure itself is only 1 element. The vehicle cabin is a significant part of the total enclosure system. Let me give you 2 most simple examples: Well take an SUV for simplicity. Say we had an enclosure that was tuned to 35 hz firing towards the rear vs the same enclosure firing directly towards the front. The end response is completely different. The wavelength of the rear firing will be long and the overall tuning will be lower. Hence, the enclosure must be compensated for the "wave development." The second example is a ported enclosure in a trunk vehicle. This system actually replicates a 6th order series tuned bandpass and models as a quasi-8th order at the dash. Therefore the entire tuning of the actual enclosure must be designed different. This is an absolute advanced enclosure design that takes an entirely different method of calculations and not just your average winisd or bbp. However, if a person were to simply ask for an enclosure calculation, non a system design, then the enclosure must be exactly as modeled. Tuan [/QUOTE]

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