You didn't state what tune you want. Also, sealed will give you more extension over ported and ported will yield more SPL at tune. Here is a tutorial on winisd
Is 10cf a little to big? I also have a 7.8cf cabinet that I could just as easily use a also has 6”port.I doubt that it puts out the full 1200 watts also. I also never listen to reference spl usually -15/20 db. Between the 16 and 19hz tune is what Im thinking. Thanks for the simple answer to my questions.
When calculating those enclosure volumes are you subtracting the volume taken up by the port?Is 10cf a little to big? I also have a 7.8cf cabinet that I could just as easily use a also has 6”port.
Yes. The box is a bit over 8cf. 7.8 is a rough estimate after port and driver volume.When calculating those enclosure volumes are you subtracting the volume taken up by the port?
Well, I figured it would of made a bigger difference but there isn't a large difference between the 7.8 and 10 cu/f boxes.Yes. The box is a bit over 8cf. 7.8 is a rough estimate after port and driver volume.
Thanks so much for being patient with me. Would the same port length work for either size box? If you were to have only the options that I have what would you choose and why ? I’m very interested in opinions.I’m thinking maybe f3 at 20hz and lower if possible is what i would like.Well, I figured it would of made a bigger difference but there isn't a large difference between the 7.8 and 10 cu/f boxes.
Honestly, the larger box allows your port length to be shorter.
800 watts is what I am thinking too. I’m now thinking of using the smaller 7.8 box if there is not a big difference. I’m wanting more spl under 30hz cause it’s rolling off around 30 in the sealed box and I love the feeling and sound of low bass.Real world, I'd guess that amp puts out closer to 700-800 watts. Add in DSP, the mechanical robustness of the UM's, and not cranking it to 11 and you should be fine even with the bigger box. The lower tune should help flatten the rise around resonance due to the higher Q(lower damping) of the driver.
Port should be 22.5" long for 19hz, at 15.6" it will be a 22hz tune.I’m i going to try the 7.8 with a 6”port 15.6” long for a 19hz tune. C someone let me know the port length is ok. And should I expect agood bit lower pant flapping tune
That explanation with a simulation chart is exactly what I wanted to know. The 19hz tune is perfect for what I am after. So 22.5” long 6” port is what i’m going to do. Thanks for the help.Port should be 22.5" long for 19hz, at 15.6" it will be a 22hz tune.
There not a massive difference between a 16 and 19hz tune, which is to be expected, 19 is only 20% of an octave above 16. the 19hz tune will be safer, I'm plotting using 1000watts.
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The teal is 16hz and pink is 19, the yellow is 25. The pant modulation will be slight, at 110db in the teens, you'll get some assistance with room gain and hoping you aren't on a concrete slab.