Vandersteen 7 mark ll or big Kef blades


I am considering a pair of one  of these.  Anybody have any suggestions , comments, recommendations?
digitaljoseph
Gee Dense Tomic nice of you to say, by the way  read all the Kef white papers you should read the one on the Kef Blade and Kef reference lines.


As per what I was doing in 1978, I was working at an audio store under the table at age 13 by the way, so while you were playing Roadie I was actually selling consumer electronics.

As per Quads, owned the Quad 63, as well as Quad US monitors, with dual Entecs, owned Quads for a total of eight years and setup a pair of modified Crosby Quads was doing that in my 20’s how old were you when you got your first high end rig?

Also in my mid 20s started working at Sound by Singer, who was one of the top audio dealers in the country with 10 sound rooms and almost every major brand of audio gear on display while at College was assistant manger at a college High Fi Store.

The Quads don’t sound anything like live music, they have restricted dyanmics, an unfocused image, and a missing top end and bass, they have fantastic midrange that is about it ever wonder why Quad ELS basically disapeared from the market?

Also loudspeaker design 101 a large surface causes diffraction, and even with Peter Walkers delay lines and creating a ripple you still have frequencies bouncing off the total surface of the radiator, hence the large and unfocused image. but hey how many high end speakers imaged with precision in the mid 80’s.

Bought my pair from KJ Leisursound in 1988 when the pound went to near parirty to the dollar.

Moved from the Quads to the Wilson Watt Puppy which sounded so much more like the sound of a live music, perfect they were not, visceral, dynamic, with a much better sense of image placement.

As per your crack on the Legacy’s AMT, they are German made Heil drivers not sourced from China, the midrange driver is silk and graphite made in Italy for Legacy, the crossovers use all top quality parts, in a very well damped cabinet, should get your facts straight.

Lastly the Treo CT uses the Balsa composite tweeter, with a tri laminate midrange driver, these are not the same materials, a carbon fiber dome will be a harder material with greater speed then a woven carbon fiber driver, woven carbon fiber is Kevlar isn’t it and woven carbon fiber has been superseeded by better materials wittness B&W newer Continum cones which are far stiffer than their earlier cones.

Lets talk midrange colorations, shall we, plastics all have a sound which is intrinsically soft. The same way that metal drivers also tend to ring but produce a sound much closer to the real instrument in terms of clarity and over tones.

Metal drivers and ceramics have been getting better and better, lighter stiffer materials push up breakup modes, and Beryillium is uniquely prized by its ability to be self damped due to its extreme stiffness and light weight.

As per coherency most high end manufactuers try where ever possible to use the exact same material for every driver as much as possible if you look at Rockport, Magico, Vivid, Kef, Paradigm.

The ear is especially sensitive in transitions between the tweeter and the midrange. the fact that according to your previous arugments all drivers have to be perfectly pistonic and the Treo CT’s midrange driver is not.

Lets just say we both have a lot of experience in this arena, you are not going to change each others minds.

And we used to sell Thiels an ancient pair of Theils are not not close, the CS 3.7 was a great speaker but would be outclassed by the much newer driver technology of the Kef Blades.

Having a Vandy dealer has nothing to do with it, we like Vandys up to a point, remember used to sell them at SBS, and know the speakers well, they were truly fantastic in the 90’s today there are speakers which sound amazing to compete with them in sleeker more WAF friendly designs.

We are very happy with our Legacy’s which are somewhat tuned sonically like the Vandys, we are also quite happy with the sound quality of the Paradigm’s and Kefs, heck we love our ATC and Quads so it isn’t that we can’t sell Vandy’s we don’t want to we have more than enough great speakers.

You should hear a set of Quad Z4 carbon fiber midrange and woofers, wed to an amazing ribbon tweeter so special.

Good night Tomic, thanks for the diatribe.

Dave and Troy





I've heard the Kef and it's a great speaker. Wonderful really. But if you have the money go with the Vandersteen 7. It's one of those if only I were a lottery winner speakers.
Pure magic.
well we certainly both worked for a living...I was no 13 year old child prodigy....I still have the MC240 and MX110 Z that showed up at our house in 1965....

we sold Wilson...and Quad, and Acoustat, and Kef, and Infinity, and Beveridge, and Vandersteen, and ADs, Gale, KEF, a line of kits w custome filters, etc....we made do with a 8 showroom Brownstone, 3 stories...for a time Pasquale Grado lived upstairs, until we converted his flat into another soundroom...

but, I went on to do other things....like run perhaps the largest advanced technology composite shops and development labs on the planet..think B2, F-22, 787...... easy stuff..

which is why I know that Kevlar is just one kind of carbon fiber....

my AMT   comment was plainly aimed at Quad, not Legacy...a brand I think is quite fine. Quad , like the new Thiel has strayed far from the garden...so to speak...I use the ESl-63 and will use them for a midrange reference, one of many...yes we worship in many tents..

now, I think I understand you associate phase with time and phase correct. The out of phase behavior we are talking about w pistonic drivers is due to breakup modes in the driver, which is different than a filter which w steep slopes shifts phase.

So cone breakup in or near the passband is 100% trash and distortion...which is why the German company developed the laser scanner - not to help Just vandersteen but to help anyone seeking the truth about just what the cone is doing....

well, I am off to pattern a Turkey shotgun....no kevlar in the stock....