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Buck
08-24-2009, 09:47 AM
I want to make a flat frequency response box for my Fi Q 15. How many cubic feet work the best for this?

Power can be 600 to 1600w.

Buck
08-24-2009, 10:46 AM
bump

Buck
08-24-2009, 11:22 AM
bump

michaellane
08-24-2009, 11:30 AM
3.6

tRiGgEr
08-24-2009, 11:38 AM
Tech.Q




Available options and what they do: 



Bp Power - This option adds a machined aluminum compression plug to the pole which helps channel all of the air under the dustcap around the coil for better cooling. To aid with this increased airflow we also add 6 axial cooling channels in the top plate. Along with increased thermal capacity comes the addition of an extra spider and a changed spider pack. All of these features increase power handling from 200-500 Watts depending on the application. 



Enclosures: Q 10 – We recommend using a sealed box in the neighborhood of .2-.6 cubic feet of volume (after all displacements for those wondering).
For ported boxes we recommend using .5-1.2 cubic feet from 28-33Hz tuning with 12-16 square inches of vent per cuft of enclosure. 



Q 12 – We recommend using a sealed box in the neighborhood of .8-1.5 cubic feet of volume.
Ported box we recommend using 1.8-2.5 cubic feet @ 28-33Hz (I personally think that a 32hz tuning is optimal, and has the most output and is still the most musical daily driving). Use 12-16 square inches of vent area per cubic foot of volume.

Q 15 – We recommend using a sealed box in the neighborhood of 2-2.6 cubic feet of volume.
Ported box we recommend using 2.8-4 cubic feet @ 28-33Hz. Again use 12-16 square inches of vent area per cubic foot of volume.

Q 18 – We recommend using a sealed box in the neighborhood of 4-8 cubic feet of volume.
Ported box we recommend using 6-10 cubic feet @ 28hz tuning, you can tune a little higher if you wish but we recommend keeping it under 32hz. Again the same 12-16 square inches of volume applies per cubic foot of volume.



Why you make other people do your work for you is beyond me. I can only assume you're a bed wetting, crybaby, have his way on mommies and daddies dime kind of lazy fucktard.

JayRich
08-24-2009, 11:43 AM
I had mine in a 2.2 sealed box with a lb of polyfill

Buck
08-24-2009, 11:45 AM
Why you make other people do your work for you is beyond me. I can only assume you're a bed wetting, crybaby, have his way on mommies and daddies dime kind of lazy fucktard.

I am aware of the recommended specs, I was trying to see if there was any special to get the flattest frequency response possible.

Fique
08-24-2009, 11:21 PM
Lowest that they recommend

JimJ
08-24-2009, 11:24 PM
Larger = lower Qtc = flatter FR...

I thought you were looking for ported though? I seem to remember recommending sealed for a Q and not getting a favorable answer :)