Nothing is carved in stone.

In our room the Klipsch kg4 sounded very much the way its frequency-response measurements would suggest: smooth and clean with a slight but definite emphasis (warmth, rather than heaviness) in the upper bass. The sound was fully integrated, giving no clue to the number or types of drivers. In fact, it was not until after we pried off the grille that we realized it had a horn tweeter. So much for the so-called "horn sound"!

The high sensitivity of this speaker was unmistakable in A/B comparisons with other speakers. Few speakers intended for home use can match the combination of high sensitivity and excellent overall frequency response of the kg4. In itself, this says nothing about the sonic properties of the speaker, but since its high sensitivity, compared with typical box speakers in its price and size class, has the effect of quadrupling the available amplifier power, this factor cannot be ignored. Moreover, the measured bass distortion of the kg4 is exceptionally low, which is hardly to be disregarded, even though whether a modern loudspeaker has a low level or a moderate level of bass distortion is usually not immediately apparent to the ear.

No two speakers sound alike, and the Klipsch kg4 did not sound exactly like our regular reference speakers or any others to which we compared them. However, it was plain from the start that the kg4 is a truly excellent speaker that we could live with and enjoy without going through a "sonic familiarization" process. It is also among the more attractive box-type speakers we have seen and therefore offers an unusual combination of desirable aesthetic and electroacoustical qualities at an equally attractive price.

Upon release in 1977 the Model 2 sold for $890 the pair and featured several innovative design elements that are fundamental to every subsequent speaker that Richard Vandersteen designed. First and most obviously was Vandersteen’s discovery that by minimizing the size and curving the edges of the baffle, he was able to virtually eliminate cabinet edge and grille diffraction issues to obtain a far more accurate sound from his drivers than he could when they were mounted in a conventional enclosure (this technology reached its summit with Vandersteen’s trademarked Stealth Enclosure). And as an early audio industry adapter of the Gen-Rad 2512 FFT (Fast Fourier Transform) Computer Analyzer initially developed for the aerospace industry, Vandersteen was able to time-align his drivers accurately, which went hand-in-glove with another Vandersteen hallmark, the use of first-order crossovers to preserve the phase integrity of incoming signals.

Except for the woofer enclosure, there is essentially no cabinetry to the Model 2, whose “enclosure” consists of rectangular top and bottom endcaps joined by long “poles” at each corner. Because the speaker’s profile is a somewhat bulky, fabric-wrapped rectangle, the Model 2 has never been the handsomest boy in class, but the speaker’s exceptional performance and remarkable value have nevertheless managed to win over plenty of hearts.

In fact, the Model 2 is the best-selling audiophile loudspeaker of the modern era, with more than 100,000 pairs sold—all of them made in the U.S. That the Model 2 is still enjoying robust sales more than 40 years after its introduction is a testament to the speaker’s fundamental rightness of design and sound quality. The Model 2 is one of the defining classics of American high-end audio.

Last but not least Cornscala D 100db  regarded by all as better than the Cornwall enough said, a speaker which I compared to Sonus Faber Amati Homage in a long term listening test.
The Sonus is a terrific speaker and it certainly impresses, and to be quite honest does do things in the audiophile sense that the Cornscala does not but we are comparing apple's to oranges cost wise by far, it bloody well better be good.

Here is the rub the Sonus became rather irritating after an hour or two whereas the Cornscala was hard to pull away from even after 4+ hours.  This was not a singular experience even the owner of the Amati's concurred

Right that is over Amplification.

Was and am still looking for that SET magic people rave about.  Have tried various SET amps on the Corns and the KG. 4's all with disappointing results guess the right one has not come my way anyway cant afford one.  In both cases my push pull EL 34/6CA7 out shone them they were just two slow not my cuppa.  Must get my hands on a 518a 

Hard to stay on point so will sum up briefly on the origional point.

Vandersteen - simply loves my Line Magenitic in 12w triode they sound magic, and loose out in no way to any other more powerful amps valve or solid state.
Here is a speaker that everybody says needs power to wake it up.  Not in my experience they need good amplification not power feed them with some mediocre amplification like Rothell or  some AVR/multi channel abortion and they are disappointing.  Even sounded like crap on a 250wpc 2 channel Anthem, same went for a Proceed AP2. (never took to the Levinson house sound TBH)

KG 4 not fussy seems to get along with most positively sings on a fast valve amp still sounded lazy on SET.  Have a well regarded Kenwood KA 7100 vintage amp 60wpc.
Had that playing with the KG 4's for a while only realised how inadequate this amp is when I hooked up the Line Magnetic and had one of those rare wow moments.

Right both the KG 4's and the Vandersteens  like 12w triode not that they dislike either 32w push pull or the 80w push pull monoblocks.  In fact between the two in ultra linear there is nothing to choose, cant tell the difference.  Hence my conclusion the Vandersteens do not need power.   The pre power combo cost new, not that I paid anywhere near that some, $6,000 where as the Line Magnetic new was $800

Cornscalas.  do not take to the SET amps I have so far tried, nyada no way, despite their sensitivity. no balls lazy recessed ugg. Do not like line Magnetic 12w triode to wolly, love the Line magnetic 32w ultra linear. And sound even better on the Monoblocks.

Why there is no gospel, here are three speakers two H/E, and one with a so called love of power, that all give me results that run contrary to popular belief.

Sort of going over to the camp, now this is audiophile heresy, in using some H/E speakers with higher powered amps.  Have a few fellow believers in this and there are some rumblings on the forums about this.  Not talking silly power, popular belief says 8-10w - no 30-100 w in my book wake them up make the things boogie.