1) John Strohbeen had a problem when he purchased Ohm Acoustics from Martin Gersten: the Ohm F speaker was not profitable to build and sell. Strohbeen's challenge was to come up with a replacement for the Ohm F that had at least some sonic affinity with it, but could make money. The Ohm F was striking acoustically. It did not sound like other speakers. It also made a powerful impression visually. It looks like something out a science fiction film. Strohbeen's Ohm F substitute was visually unimpressive. It looks like an ordinary woofer turned downward with an ordinary tweeter placed on top. Purely visual comparison to the previous Ohm F was inevitable to the detriment of the new speaker. Solution: hide the woofer and tweeter inside of a perforated metal can. What you cannot see will not discourage you from purchase. The can is not really there to protect the guts of the speaker. It is there to hide the guts. Is this dishonest? I do not think so. It is an adaptation to the tendency most people have to judge speaker sound by speaker looks.
2) David L. Clark (RIP) gave the Ohm Walsh 5 extremely high praise in a June 1988 Audio magazine review. He described the speaker as "a masterpiece of the speaker makers art" or words to that effect. In his 2003 Audio Critic #29 review of the Ohm Walsh 200, Don Keele was very positive in his evaluation. Both Clark and Keele were accomplished audio scientists and engineers, not BS artists and snake oil salesmen. Praise from them counts for something. So even if the post-Ohm F speakers look like crap when you remove the metal cans, at least some genuine experts think that the sound they produce is admirable.
3) The Ohm speakers may have merit even if the business practices of John Strohbeen - as described in this thread - leave much to be desired. Need some help in restoring old Ohm speakers? If you contact Ohm, you might get lucky. You might not. You are likely better off looking for help elsewhere.
4) To the best of my knowledge, only one company other than Ohm has pursued the Walsh idea commercially: German Physiks, with their extremely costly DDD speakers. The fact that only one company has picked up the original Ohm / Walsh approach to speaker building - when the Walsh patent expired in 1986 - is not encouraging.
Happy listening (and tinkering),
Joel Dickman