If your brother is enthusiastic about the CW4, then he should definitely keep them for a longer period of time in my view. In my opinion, the aim of a good speaker is to make you forget about this speaker more and more and to open the window to the music more and more. That's why I've had my main speaker sets for 30 years in some cases. If your brother just got used to the CW4 a year or two ago, then everything would start all over again, all the brain work of listening and empathizing. What would he get instead when now changing gear in the phase of becomming more and more familiar with it? A short-term show effect of the “different again” impression. It can go well, but it can also end very badly. In my experience, either the love for a speaker increases with longer and longer listening (a paradoxon because you „forget“ the speaker more and more at the same time) or when changing again you feel “entertained” at the beginning because of the short-term show effect, or you talk yourself up about the new speakers because you have to justify spending the money. But...a strange feeling creeps in that something is not right. Just as you learn to love one loudspeaker, you can experience certain disturbances with another loudspeaker that become more and more noticeable and absolutely annoying over time. To be honest, it's not worth the experiment. BTW Buying new CW4s again after a dissappointing experience with other speakers would always be more expensive for your brother, or they would be second-hand speakers that don't come from the same family. Just my two cents.

Just looks like a reconfiguration of the KLF series.

Preface:  I'm going to make a display box for an old family bible.  Wouldn't surprise me if it was 150 or more years old.  My understanding is my grandparents had it when my father was a child (and it was passed down to them).  My dad is now 95... I've got a swirl of ideas so this is me throwing some spagatti onto the walls to see if this is even viable.   one idea is to insert a decorative (say, 1/4") brass rod so the "dot" would show against the (probably walnut).  Purely decorative.  Don't yet know where the rod might go....but I know I'll be routing the top/lid section.....which had me wondering.....   Could one drill the hole, say, 1/2" deep, take a 9/16th's length of brass rod, set it in epoxy but now it's sitting a bit proud.  Could you THEN take the router and have the router trim the rod down flush with what/how ever you are routing?  (route the wood and brass together)   Part of me says probably but you'll likely ruin your bit (wouldn't a carbide live through that?)  If it worked BUT ruined the bit, that might be an acceptable tradeoff as you can always buy another bit.   Another part says it might bugger up the brass.  Probably won't leave it as clean as I'm picturing it in my mind.   I'm thinking there are more reasons to NOT do it than to try.  But if my "creative side"  (HAHAHA  That's a joke!!!)   Anyway, if I lean to wanting to do something like that, I'm wondering how well it might work or other issues.        

Maybe someone could design a horn speaker that has less footprint.  

PM sent.

It was truth 10 and 20 years ago too.

Agreed.   

A pr. of Klipschorns in 1962 were $1644.   In today's USD that could be considered a "bargain" presuming that the speaker made today is as well made, using the same materials, as its 1962 equivalent.   That may not be the case.    

Most startups fail for one of two reasons, first is launching before the technology is fully developed.  The second is assuming a business strategy, successful in an entirely different tech space, can be leverage and applied to another.   

This one might make your eyes leak... Bonnie Raitt