How are speakers improved?


Lets look at a hypothetical example of a speaker designer. Lets call him Nigel. Now Nigel has made a bookshelf speaker. It uses state of the art drivers and a braced MDF box. The crossover is 4th order linkwitz riley @3khz. All very typical so far. The speaker is almost ruler flat within its operating range. Off axis is even and quite flat. Distortion is within typical limits. 

He listens to it and sends it off to some reviewers. The response he gets is lukewarm. Its neither good or bad. 

The questions are:

1.) What does Nigel need to do to IMPROVE the speaker beyond its existing performance?
2.) What parameters need to be improved in order to elevate the performance to an even higher standard? 

WHAT IS THE SECRET TO PERFECT SOUND THAT HAS ELUDED NIGEL???
kenjit
The problem with well thought out, educated responses like larryi and gs556 is that all they are doing is educating the troll so he can come back next week and start the same thread only now armed with more knowledge (notice I didn’t say experience)...
We're Only Making Plans For Nigel.
Nigel can be found most days at the Nigel User Group  (NUG)
YUP... I personally see the change in response, thing are a changing..

I feel a sonnet coming on..:-) Why not enjoy it.. LOL, HO HO HO...

Confucius say "man who eat jelly beans Farts in technicolor". Old but true..

Romp....

Happy Happy, Romp, Romp, Romp, Romp, Romp.. rainbow... right.. :-)

Regards
Yeah, same here...haven't listened to Drums and Wires in years. Nigel triggered my memory. Gonna cue it up tonight.