holdenboy
Custom Car Stereo Systems
- Joined
- Aug 31, 2008
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- Nelson Bay NSW
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- VR Wagon
Firstly, why would you want to tune so high (80hz)? I assume your using a sub as well?
If you want them to play 80hz and above, seal them. Ports are mainly designed for LOW bass extension. If those chambers are 0.97 cu.ft. each, a 3" port around 0.8" deep sounds right for a 80hz tune......have you seen the plot on a box building program though, i havent but i can imagine it'd have a huge peak around 80-90hz.......not really desireable for SQ purposes.
If you want them to play 80hz and above, seal them. Ports are mainly designed for LOW bass extension. If those chambers are 0.97 cu.ft. each, a 3" port around 0.8" deep sounds right for a 80hz tune......have you seen the plot on a box building program though, i havent but i can imagine it'd have a huge peak around 80-90hz.......not really desireable for SQ purposes.
