Coupled or de-coupled cabinents

[BassAwdyO]

Coupled or uncoupled, I dont think the SQ will be effected either way. The vibrations caused by the woofer in the enclosure is of the same frequency that the woofer will be playing. If you are truely concerned about the woofers making the 2 way enclosure vibrate to hell, then use the dual opposing woofers method. put 2 woofers in the lower cabinets each and put them on oppostie sides. The inertial forces of the cones moving and air pressure created will cancel each other out for no net force. I had a subwoofer enclosure built using this method. It had two balanced tempests and 4 balanced ports. 2 ports and a woofer on each side of the enclosure. When operated at full volume I couldnt manage to get even a dime on its edge to fall. With that in mind, coupling the 2 ways is only a matter of whether or not you wish to do it. If you have any reason you'd like to seperate the 2 ways from the subs then go for a uncoupled design. Keep in mind that the amount of energy you are coupling is minimal and should have little if any effect at all on the system. It will surely not be an audible effect. Think instead about the differences between connected and unconnected speakers as far as moving the speakers, cosmetics, etc...

[wintermute]

The example I was given was more to do with sub placement than anything. If they are decoupled you can (if necessary) move the sub cabinets somewhere completely different to the smaller two ways. thus getting optimal bass response without affecting your imaging

Tony.

[troystg]

Hey Tony-

The difference is mine are not sub cabinets.

Mine are woofer units.

Mine cross over at 125hz and are controled by a servo controller so they do play some mid bass.