Two Truncated Pentagonal Pyramids for an Enclosure - an interesting Approach to circumventing the intrinsic Disadvantages of Full Range Drivers?

[tiefbassuebertr]

such an approach isn't to find often, but looks interesting - go to
https://www.fairaudio.de/hintergrun...sikelektronic-me-geithain-lautsprecher-2-dwt/
http://www.6moons.com/industryfeatures/roadtourgeithain/geithain.html

Are there projects in this kind ?
Thanks for comments.

 

[planet10]

Big drivers, significant centre-to-centte, a whole lot of combing.

I would suggest that more on a smaller platform would be more “even”. A dodecahedron (12 pentagons) or an icosahedron (20 trianglkes) would be preferable.

dave

 

[rayma]

https://www.psaudio.com/cdn/shop/ar...us-e1488298409569.jpg?v=1675027640&width=1100

 

[olsond3]

It depends on the goal. The speaker shown will have a smooth omni-directional response up to about 2 kHz and then transition to a repeating directivity pattern with lobes in the response above 2 kHz or so based on the cone size and spacing. It could make for a fun effect. Designing a speaker with a really uniform omni-directional dispersion pattern that is full range into the high frequencies is a challenge. Search this forum for "How to build a spherical speaker?" and "Omni Directional Speakers" to see the efforts of myself and others. There are several commercially available speakers that are omni-directional horizontally. The Beo-90 has a nice white paper that describes the experience of listening to speakers with various radiation patterns, wide, narrow, omni. The mass market HomPod 2, omni-directional speaker, from Apple looks pretty good and very inexpensive for what you get. It uses a ring of folded tweeter horns to get 360 degree dispersion horizontally.

 

[Hearinspace]

This is only half on topic but the OP reminded me of hearing this twenty or so years ago. Even and smooth everywhere in the room .. There's a link on the page to a description of their bending wave theory.

 

[hm]

 

[hm]

i did this 1994, german P. get a nice report Absulute Sounds look: http://www.hm-moreart.de/21.htm

 

[tiefbassuebertr]

https://www.psaudio.com/cdn/shop/ar...us-e1488298409569.jpg?v=1675027640&width=1100

View attachment 1239248

interesting image. Here the associated URL:
https://www.rewindaudio.com/20-design-acoustic---d12-speakers.html
a review:
https://www.ebay.com/itm/145343575585
more URL's

https://www.reddit.com/r/BudgetAudiophile/comments/fjias0

 

[tiefbassuebertr]

in then PDF attachments a test review of DESIGN ACOUSTIC - D12 SPEAKERS