So far great sound including nice bass, treble and midrange has been achieved with the linoleum Pleiades Auratone 5C type speakers with Tesal TVM ARX-130-20/4 drive units.
Frequency response is plus or minus 3dB from 100Hz to 14KHz. See previous posts.
While looking for small neodymium drive units these are some of the search results:
https://m.youtube.com/watch?v=H-WMOtNG-k4#fauxfullscreen
https://www.aliexpress.com/item/2PCS-New-Neodymium-Magnet-8ohm-10W-Full-Range-Audio-Speaker-Loudspeaker/32751696993.html
https://m.youtube.com/watch?v=H-WMOtNG-k4
https://m.youtube.com/watch?v=OQ8Q0-KBPcQ
https://m.youtube.com/watch?v=kn1fHTIpkwk
An inexpensive example seen on eBay shows great impedance variation with respect to frequency
https://www.ebay.com/itm/2pcs-57mm-8Ohm-8-10W-Haut-parleur-audio-Haut-parleur-carre-Neodymium-BA/273588148839?hash=item3fb31fda67:g:ABkAAOSwOuRZsPrv
How would linoleum Pleiades baby triangle pyramids sound like with such drivers driven by just one 2N3055 Pleiades 2N3055 power amp?
The pyramid should vibrate as a whole creating great bass at small excusions thereby reducing the Doppler effect.
For the Doppler effect on speakers see James Moir papers.
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