Has anyone modeled or played with the 15” Dayton Max X in a sealed enclosure for mobile applications?
It has some good max, so I’m hoping to go a little bigger than suggested in order to take advantage of the xmax and increase low end extension.
Overall, it’s for an old-school build that will have a Power 300 MOSFET of the fronts and likely use a Zeus to push the Max X. I can feed it anywhere from 600-900 rms with other amplifiers if needed.
https://www.parts-express.com/Dayto...SD_-QTCyNbXIOj2bQain7rz_FHLef0tWvrMkTi8Le46Bg
It has some good max, so I’m hoping to go a little bigger than suggested in order to take advantage of the xmax and increase low end extension.
Overall, it’s for an old-school build that will have a Power 300 MOSFET of the fronts and likely use a Zeus to push the Max X. I can feed it anywhere from 600-900 rms with other amplifiers if needed.
https://www.parts-express.com/Dayto...SD_-QTCyNbXIOj2bQain7rz_FHLef0tWvrMkTi8Le46Bg
And that's fine but does the suggested box give you a Q of .707?
If so, you might find going larger takes away from the desired result of that Q.
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By going with a sealed alignment there is an optimum volume value, one that balances "cone control"....if one just merely increases the enclosure volume in a sealed enclosure the cone gets "over-controlled" & bass output suffers.
PE publishes the numbers for a vented enclosure as well as the sealed version. The vented size gets a superior "three decibel down" spec at 24 hertz with only a 4.3 cubic foot enclosure....far better than that 49 hertz sealed number.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
PE publishes the numbers for a vented enclosure as well as the sealed version. The vented size gets a superior "three decibel down" spec at 24 hertz with only a 4.3 cubic foot enclosure....far better than that 49 hertz sealed number.
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Rick...
Why go with a bigger sealed enclosure if there is no performance to be gained with the recommended 1.75ft3?
Like CW said, you need to know the Q with that volume.
If 1.75ft3 = a Q of 1, then going below 1 will get you lower Hz, but less overall SPL.
If you go above 1, then you gain SPL but lose lower Hz.
Hofmann's Iron Law...efficient (loud), low (Hz), small (enclosure)...pick 2.
Now you might gain SPL performance with a 3.5ft3 BP4 vs the 4.3ft BR!