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VON SCHWEICKERT

 

 VR-55 AKTIVE

 

 

 

 “The VR-55 Aktive  renders such an inherent sense of
“live” -- a symbiotic combination of its exceptionally low distortion, spectacular transient speed, sheer transparency, and resolving ability, and of an overall composure unlike anything I have ever experienced from a loudspeaker at this price -- that I was completely enthralled."

Greg Weaver

The Absolute Sound Issue 256
       

 

Von Schweickert's VR-5 series, were manufactured between 2003 and 2014 and were a huge success Critically and sonically. So,they  realized that any new version would have to be spectacular.

 Along with their ongoing R&D program, VSA began a new partnership with two European driver manufacturers who modified  their designs to make customized units for the new VR-55 to achieve the the amazing VR 55 sound. which can be best characterized as simply the reproduction of the live event, with no coloration.


With ceramic honeycomb woofers and midrange drivers along with a damped Beryllium dome tweeter, the measured distortion of which is less than 0.5% at normal listening levels. mounted in VSA's Pat. Pending Triple Wall Laminate noise reducing cabinet, VR-55 reproduces the sonic tapestry with clarity and musicality that we have all been searching for.
The VR-55 could be the ‘Holy Grail’ of sound engineering!

 

As Greg Weaver further noted:


"Midrange with the VR-55 Aktive is laden with texture and dimension, rich in detail, and replete in harmonic bloom. Instrument fundamentals from piano, violin, guitar, and especially the human voice, are rendered so realistically that they seem to conjure a living, breathing quality. The VR-55s offer some of the most beautiful, smooth, and expressive midrange I have had the pleasure of hearing—they are so engaging and articulate, so completely expressive and fluent, they almost burst with life. "...Taken in combination, the midrange and treble performance of the VR-55 Aktive is more open and more transparent than I can recall hearing from virtually any dynamic loudspeaker. In fact, in this area it rivals the best I’ve heard from any planar or electrostatic design. In addition, its bass performance—in somewhat varying degrees due to the remarkable pair of custom Accuton drivers and the dedicated 525-watt, fully adjustable mono amp—simply needs to be experienced to be fully appreciated. Taut, deep, and lightning-fast, it differentiates pitches and timbres with an ease and accuracy that are nearly unmatched. Try as I might (and believe me, I really tried), I could not detect the faintest hint of ringing, resonance, or driver distress during any of my auditions.

The Absolute Sound Issue 256

(We could not agree more with  GREG WEAVER'S assesment of the SOUND OF THE VR 55. HENCE THE EXTENSIVE OF USE OF  QUOTATIONS FROM HIS REVIEW. WHAT CAN WE SAY? THE MAN HAS A WAY WITH WORDS)

 

To enable the bass response to match any room, the VR-55 Aktive uses a 525-watt built-in woofer amplifier, requiring the customer’s existing amplifier to be used only to drive the midrange and tweeters. Our custom-built amplifier was engineered by CIAudio and uses Hypex transistor modules along with an analog power supply to provide tight bass control over the woofer’s voice coils and cones. The transient response speed of our woofer system has to be heard to fully understand what we have achieved. This bi-amp technique allows anyone, in any room, to achieve superb bass depth (21Hz @ -2dB) and also enables matching of the bass level to the upper frequency ranges. Finally, a speaker for every room!

 The VR 55's  concert hall depth  is in part attributable  to a rear-firing ribbon tweeter coupled to VSA's Ambience Retrieval System with Effects Level Control. This Dipolar Design creates a “bubble” of sound rather than a narrow “beam,” generating a huge sweet space.

 

 

 

VR-44 AKTIVE

Although the VR-4 was one of the most highly regarded and trend-setting designs from it's introduction in the 1980’s and was recognized by AudiophileReview.com as one of the Top 25 Best Speakers of All Time, VS found room for improvement in several key areas. Resolution, transparency, and room adaptation were the focus of their  R&D program over the past few years, leading to a new cabinet resonance-control design.A Triple-Wall Laminate process utilizes three different types of materials bonded together, all of which resonate at different frequencies and “Q” levels, effectively eliminating the cabinet as a source of coloration. No need to spend tens of thousands of dollars to buy an aluminum-bodied speaker system, as our Triple-Wall design is superior at only a fraction of the price!


 

For this reason, our European engineering partners have helped us design a complete transducer set that is matched to each other in transient response speed and low distortion, using a highly damped cone with linear frequency response. Our new cone technology is based on laminating different types of materials to provide stiffness without the penalty of ringing. The 6” full-range driver cone is made of composites of cellulose acetate pulp, acrylic plastic, and carbon fiber, while the tweeter is a similar organic material with a soft plastic coating. To provide extreme rigidity, our new 8.8” woofers are formulated from ceramic-coated alloys of magnesium and aluminum, which is then damped with a layer of electrostatically applied oxide powder.

 

 As any good engineer knows, a speaker diaphragm must be extremely light and rigid if signal accuracy is desired. It is difficult to imagine that a cone needs to stop and start 2,000 cycles per second to reproduce a female vocalist’s voice when she hits a high note! However, since many types of rigid cones made from ceramic or metal materials have a tendency to ring and sound harsh in the upper midrange, it is imperative that the cone have high internal damping to eliminate that ringing.

 Since the twin 8.8” woofers are crossed over to the full-range driver at 100Hz, the woofers are not audible as a separate source of sound; the full-range mid drivers are dominant. To ensure that the drive units sound coherent, we have selected crossover points far below and above the midrange frequencies, at 100Hz and 4kHz. All crossover parts are world-class, such as our Mundorf resistors and capacitors, Delphi Aerospace wiring, and WBT posts. The cabinet baffle tilts backwards for Time Alignment and we have taken special attention with the phase alignment of the new driver array. The image focus and 3-D layering has to be heard to be believed! To enable this model to work with any amp, in any room, we have provided an optional powered sub-woofer system that can enable a small tube amp with only 20-watts to drive the VR-44 as if the amplifier has 200 watts. You will hear Dynamics!

TWO VERSIONS

PASSIVE VERSION:
No amplifier included for woofers. This is the model to buy if you have a large, powerful amplifier that has plenty of bass power.
AKTIVE VERSION:
300-watt r.m.s. (600 watts peak) amplifier built in, to drive the twin 8.8” woofers from 16Hz to 100Hz.
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