Concentric drivers

I agree with Mulveling, (whose system I would love to hear), Tannoys have been recognized as one of the best-sounding speaker systems on the planet for almost all the years I've been alive.

I don't care if there is some Doppler effect happening, I love their sound, and that's what matters to me.

Regards,

Dan

The Ohm  acoustics speakers should not have doppler affect since all frequencies from the driver are coherent from one source and align in parallel as they leave the driver due to the driver alignment and method of transmission from back of the speaker

The most recent Thiel concentric drivers use a rippled cone area to offer additional strength that allows for flat profile to mitigate the doppler affect that would otherwise be introduced.

Doppler (intermodulation) distortion must be an issue for speaker designers or why would a company like JBL talk about it back in the 1980’s. See the link below page 3 last paragraph B460 bass system.

Mike

http://www.lansingheritage.org/html/jbl/specs/home-speakers/1982-l250-b460.htm