Finally after several months of toying with the deaign, I am building it!
I wanted a bookshelf speaker that could satisfy the monkey coffin guys, while being refined enough for delicate ears. Extended responce and dynamic impact, and power responce were the main focus of this one.
No 5" or 6" here. The Hivi D8.8 measure 9 5/8's in diameter, with a TRUE 8" cone size. X-max of 8.8mm as well. This is not a Budget speaker, but one with a heck of a purpose. The D2604-83300 brings its "A" game too. 475Hz FS, Frequency responce to 40K (VERY flat to 20K), and controlled impedance with no breakup. Take a lookie:

They need to look the part too, squat and powerful. The bass responce represents an approximate "Q" of .78 giving a 1dB bump around 55Hz, an F3 of 40Hz and F10 of 30Hz. 4dB of baffle step and a very soft transfer function on the tweeter smooths out the transition. The diffraction matches the soft crossover which ultimately will assist the tweeter down low. At 50Wrms sine input, the woofer does not exceed x-max until 23Hz, avaraging 102dB from 38Hz on up. It is good with 100W to 28Hz outputting 108dB as well. Vent velocity does not exceed 19m/s. All in a Mere .625ft3 (15x11x12.5).
Here's the sim:

And Build progress:


There will be more "triangle" braces from all surfaces as well as the one you see. The walls will be lined with sinic barrier, and the cabinet will be stuffed. The ports will actually be two of the 1.5"x4"-ers glued back to back to make a dual flare 8" long port.

More to come...
I wanted a bookshelf speaker that could satisfy the monkey coffin guys, while being refined enough for delicate ears. Extended responce and dynamic impact, and power responce were the main focus of this one.
No 5" or 6" here. The Hivi D8.8 measure 9 5/8's in diameter, with a TRUE 8" cone size. X-max of 8.8mm as well. This is not a Budget speaker, but one with a heck of a purpose. The D2604-83300 brings its "A" game too. 475Hz FS, Frequency responce to 40K (VERY flat to 20K), and controlled impedance with no breakup. Take a lookie:

They need to look the part too, squat and powerful. The bass responce represents an approximate "Q" of .78 giving a 1dB bump around 55Hz, an F3 of 40Hz and F10 of 30Hz. 4dB of baffle step and a very soft transfer function on the tweeter smooths out the transition. The diffraction matches the soft crossover which ultimately will assist the tweeter down low. At 50Wrms sine input, the woofer does not exceed x-max until 23Hz, avaraging 102dB from 38Hz on up. It is good with 100W to 28Hz outputting 108dB as well. Vent velocity does not exceed 19m/s. All in a Mere .625ft3 (15x11x12.5).
Here's the sim:

And Build progress:
There will be more "triangle" braces from all surfaces as well as the one you see. The walls will be lined with sinic barrier, and the cabinet will be stuffed. The ports will actually be two of the 1.5"x4"-ers glued back to back to make a dual flare 8" long port.
More to come...
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