[Starkiller4299]

OK, so I've seen a lot of designs that call for setting the drivers off of the center axis on the front of a speaker. A prime example is the speaker plans given for the Recession buster kit, plans here . Most noticeably, the sealed variant is vertically aligned.


What gives?

 

[michael hurd]

Just like moving a subwoofer around in a room, moving a woofer around in a box will change the modes inside the box. ( resonanaces )


Boxnotes ( a free downloadable program ) will show you the effects of moving the driver around in the box.


Sometimes, it is done for purely aesthetic reasons.

 

[Starkiller4299]

Thanks a bunch. Somehow that program sneaked past me before....New toy to play with!

 

[djarchow]

offsetting a tweeter is done to reduce the effects of the baffle diffraction. this usually results in a smoother on axis response at the expense of worse off axis response. A tool like the baffle diffraction simulator or the edge will show you this.


Regards,


Dennis

 

[LTD02]

yeah, baffle diffraction.


a better solution is big rounded over edges.


this is why thiel speakers look the way that they do and the same can be said for the b&w 801d's.

http://www.thielaudio.com/THIEL_Site...s3_7main.shtml

http://www.bowers-wilkins.com/display.aspx?infid=1158