Size and shape of infinite baffle - Page 3 - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 26th September 2005, 03:59 AM   #21
diyAudio Member
 
paulspencer's Avatar
 
Join Date: Sep 2003
Location: Melbourne, Australia
Quote:
it's not only the low frequencies that come around the baffle though, pushing the low frequency diploe rolloff down below the audio range is fine, but above that you still have higher frequency back waves bouncing around the room interacting with the front wave. Assuming it's a round baffle (as using a single number for D does) you get a comb filtered high frequency response, and still figure of 8 radiation pattern right?
I don't see much point in arguing the merits of a true infinite baffle vs one with an fequal at 20 Hz, since the latter is not practical to fit into a room which is of a size that benefits most from OB.

If you wanted to discuss a practical OB vs IB, then you would have to consider things like polar and power response, directivity and room response, excitation of room modes, imaging and room treatment, SPL requirements, driver choices, room modes ........ it would be a very in depth discussion. The ideal would probably be a combination of the two, with OB being the winner from 40 - 200 Hz, IB below that and for the treble. The midrange would be the most likely range of contention over which is better. Those prefering IB midrange would perhaps use a waveguide for the treble and select a larger mid driver to get some pattern control.

For a dedicated room, I'd be interested in a Linkwitz Phoenix main panel with 4 x SS 10" added to the main panels like in the Beethoven, and dipole woofer array either side, with an IB sub operating below 40 Hz.
  Reply With Quote
Old 26th September 2005, 10:54 PM   #22
poptart is offline poptart  Canada
diyAudio Member
 
poptart's Avatar
 
Join Date: Oct 2004
Location: Vancouver, BC
Fair enough. I just don't see any reason to try and connect infinite baffle and open baffle, an infinite baffle is much more like a giant box speaker than a giant OB. The argument would be irrelevant to the original poster's question too since his design has a small open baffle for the mid+tweet on top of a box, Bazzilla style, nothing to do with large dipoles or infinite baffles.
  Reply With Quote
Old 27th September 2005, 01:26 AM   #23
j.burtt is offline j.burtt  United States
diyAudio Member
 
Join Date: Sep 2005
Location: North Texas
Thank You.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
ESL in infinite baffle hugobors Planars & Exotics 9 15th March 2008 04:22 PM
Aperiodic box for B200. Vent size and box shape? ChuckT Full Range 11 15th October 2006 07:29 AM
Help with infinite baffle. Andrew S- Multi-Way 2 8th February 2006 03:53 PM
help w/ infinite baffle sub HIPCHECK Subwoofers 5 16th December 2005 12:19 AM
Infinite Baffle. Best bet if possible? Hybrid fourdoor Multi-Way 50 9th July 2004 08:52 PM


New To Site? Need Help?

All times are GMT. The time now is 11:06 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2