2 x mid cone theory?

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   So... I'm building 2 x Mid/top box with 2 cones, Infinite Baffle. and would like to know the audiophile theory. I appreciate that having 2 vertical mounted cones for mid already has comb filter problems, although these appear to be minimal.

main questions are to do with each cone having its own chamber, or all sharing a common chamber, and what effect does larger and smaller chambers have on mid? Also, does porting have any tonal effects on mid, or is just for bass driver control.
bass box stuff seems to be irrelevent, but i do have access to clio, for measuring, when they're done.

Cheers.
ps this is a personal project, not work.

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opus jody Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 06 June 2006 Location: United Kingdom Status: Offline Points: 1244	Post Options Post Reply Quote opus jody Report Post Thanks(0) Quote Reply Topic: 2 x mid cone theory? Posted: 16 August 2006 at 5:04am
	So... I'm building 2 x Mid/top box with 2 cones, Infinite Baffle. and would like to know the audiophile theory. I appreciate that having 2 vertical mounted cones for mid already has comb filter problems, although these appear to be minimal. main questions are to do with each cone having its own chamber, or all sharing a common chamber, and what effect does larger and smaller chambers have on mid? Also, does porting have any tonal effects on mid, or is just for bass driver control. bass box stuff seems to be irrelevent, but i do have access to clio, for measuring, when they're done. Cheers. ps this is a personal project, not work.
	Improvised Hardware Music http://vimeo.com/user9389813/videos

tb_mike Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 01 October 2004 Location: New Zealand Status: Offline Points: 2744	Post Options Post Reply Quote tb_mike Report Post Thanks(0) Quote Reply Posted: 16 August 2006 at 7:18am
	Why two?If you cross them low to tweeter enough the comb filtering wont occur. Sharing a chamber is fine,but two smaller chambers might have resonances that are higher in frequency. Yes porting can have effects on the mid,port resonances that dont appear on t/s modeling (1/4wave tline resonances etc) Consider non parallel wall enclosure,alot of the energy reflects back out the cone from inside the box. Edited by tb_mike - 16 August 2006 at 7:19am