Monophonic speakers

[pelanj]

One idea comes to my mind once in a while. For listening to music as background while working and moving around, a single speaker should be perfect. I have even read about some people, who prefer listening music in mono. I once raised this subject on another forum, where someone suggested adding "stereo" tweeters to get some "air". Which is exactly the opposite way the Stereolith speaker works.
I have a pair of tweeters left from an old project. I was thinking of using a dual coil woofer for lows and two tweeters for "stereo" highs - all in a single box. Have you ever tried something similar (and unorthodox)?

What are your opinions for mono music listening? Which is the best way? I have always admired vintage speakers as Hartsfield or Altec Iconic 820 - which were originally intended for mono use.

[mashaffer]

Maybe a better way to get air without losing the mono sound would be to use open back (open baffle) at least above 200Hz.

[el`Ol]

Here is a club of mono nerds:
http://www10.big.or.jp/~dh/index.html

[DcibeL]

Using more than one tweeter is always a bad idea. Wavelength of 20KHz is only 17mm, which will be less than the distance between the two tweeters, causing huge lobing problems at high frequencies. Might be good if you are looking for some pseudo 3D effect as you move about the room, but not hifi at all.

Open baffle, or some omni-directional speaker is a much greater idea, IMO.