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97 GTP box
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<blockquote data-quote="Moble Enclosurs" data-source="post: 7503080" data-attributes="member: 634917"><p>First thing first. What it should be tuned to is 41.35Hz. So your 40-42Hz is ok. Next, as far as box and port, That I have figured as 4.85 cubic ft and port of 14x7, at 19.25". Now, as for what you have, it is tuned to 40hz with those drivers installed. But my recommendations will give you 2-3dB increase from 36hz up mainly around 37-42hz and a decibel or two for the rest of the response. Phase response is also smoother than your current box. my recommendations are 0 degree at tuning, while yours is around -45degree but since your port is on the same baffle as the drivers, this causes phase issues-very minor, but you can hear the difference. Its the exact difference that makes a custom box sound "better" than a prefab. Also, the custom design give less of a load on the amp, for better amplifier cooling and likely less distortion in the process over time. Efficiency also rises. So, you see, this is why custom designs can be better overall. Its sometimes not something you hear, but other parameters, such as loading, efficiency, and distortion are better as well. Hope that helps.</p></blockquote><p></p>
[QUOTE="Moble Enclosurs, post: 7503080, member: 634917"] First thing first. What it should be tuned to is 41.35Hz. So your 40-42Hz is ok. Next, as far as box and port, That I have figured as 4.85 cubic ft and port of 14x7, at 19.25". Now, as for what you have, it is tuned to 40hz with those drivers installed. But my recommendations will give you 2-3dB increase from 36hz up mainly around 37-42hz and a decibel or two for the rest of the response. Phase response is also smoother than your current box. my recommendations are 0 degree at tuning, while yours is around -45degree but since your port is on the same baffle as the drivers, this causes phase issues-very minor, but you can hear the difference. Its the exact difference that makes a custom box sound "better" than a prefab. Also, the custom design give less of a load on the amp, for better amplifier cooling and likely less distortion in the process over time. Efficiency also rises. So, you see, this is why custom designs can be better overall. Its sometimes not something you hear, but other parameters, such as loading, efficiency, and distortion are better as well. Hope that helps. [/QUOTE]
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