Planar (Ribbon) Magnetic Speaker. Detail of DIY construction of a large planar (ribbon) speaker. - YouTube
How a ribbon speaker works – PS Audio
DIY design] AK OB1 open baffle loudspeakers
A DIY Ribbon Speaker of a different Kind | Page 63 | diyAudio
My first ribbon tweeters! | Speaker projects, Diy speakers, Diy
A DIY Ribbon Speaker of a different Kind | diyAudio
concept design for a speaker series using point source driver mixed with ribbon tweeter and large woofer in a semi open ba… | Design, Home cinema room, Audio design
Full range ribbon speakers. Quite rare I think. : r/audiophile