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VON SCHWEIKERT VR-4JR Mk.II (discontinued model)
World Class Reference Speaker Systems for Music and Film
New model VR4-JR "Anniversary" expected Fall 2009 !

 

 

 

 

 

 

 

 

 

 


The VR4JR Mk.II or Virtue is a two-piece stacking speaker system utilizing the world's finest cabinet design: a time-aligned, decoupled sat/sub for incredible tweeter, midrange, and woofer transparency, as well as unparalleled soundstage reproduction. Clarity is enhanced with custom-made Low-Distortion drivers with the best available Transparency Factor.

The engineering target was to design a highly accurate, laboratory-grade system with the ability to be used as a professional reference monitor. Studios using VR-series include Sheffield Labs, Musical Fidelity Sound Labs, A&M Records (Herb Alpert), and Walt Disney Studios (Alan Menken, winner of 7 academy awards). Many recording engineers brought these speakers home, including Robert Harley, now editor of TAS, and Herb Alpert, creating an audiophile demand.

A reference monitor must have wide bandwidth, low distortion/coloration, with convincing three dimensional depth and realistic sound staging. The VR-4jr Mk.2 is highly optimized for this use and is highly musical as well. Imaging and depth are state-of-the-art due to our proprietary Ambience Retrieval System and Global Axis Integration Network.

"VR-4" indicates a Virtual Reality design emphasizing four dimensions of sound reproduction:

  • Amplitude: A speaker system used for reference monitoring must meet a +/- 1dB tolerance level.
    Phase: Consistent phase between drive units and slow rotation is desired; no out-of-phase drivers;
    Time: The drive units must be time coherent in the ear's sensitive 3ms range.
    Space: The speaker design must replicate a palpable three-dimensional sound stage with depth.

The elegant book-matched wood veneer two-piece stacking cabinet is built to the highest level of professional build quality and includes a new bracing/damping system that enables incredible transparency and the total elimination of coloration. The cabinet walls are 1" thick and internally lined with thick acoustic felt. Twin shielded 6.5" woofers reproduce the bottom octaves with authority and clarity, using a modified triple-chambered transmission-line to achieve response flat to 23Hz (-6dB @ 20Hz). Our hybrid bass loading system utilizes a specially damped 3" wide vent, front-mounted to allow close placement to a wall in small rooms without boom or coloration. Unquestionably the most impressive and compact 23Hz bass system available!

We have developed a shielded 6.5" composite cone midrange driver with incredibly flat frequency response and low distortion. The cone is fabricated from carbon and mica impregnated cellulose acetate pulp using a ceramic liquid binder, with a surface coating of polymer to damp the stored energy waves. This high tech composite cone has a remarkable Young's Modulus (ratio of stiffness to weight), allowing incredible transient speed up to 6,000 cycles per second without distortion of timbre or phase. This new midrange driver has greater clarity and dynamic range than our reference electrostatic speakers!

Our tweeter is possibly one of the world's finest drivers, with the highest level of clarity and detail combined with a very smooth, lush sound quality due to the Low Distortion Motor design. The diaphragm is composed of silk with three layers of proprietary polymer applied to the surface. This enables the tweeter to reproduce stunning detail without added harshness or "buzz" that untreated fabric produces. Magnetic shielding makes this tweeter perfect for music or film reproduction.

In order to duplicate the depth and air space of the concert hall, we have developed a dipolar rear mid/tweeter and ambience derivation circuit, complete with Dimension Control for effects level. This completes a 360-degree spatial image with virtual realism!


Von SCHWEIKERT VR-4JR Mk.II SPECIFICATIONS:

System Type: Dynamic-driver four-way system using a triple-chambered transmission line and two-piece stacking enclosure system to eliminate resonance and ensure image focus.

Woofer Tuning:The triple-chambered transmission line is a hybrid design composed of three separate chambers coupled to the room by a tuned vent at 25 Hz. The chamber filling now consists of
new internal woofer-chamber damping materials. The 3"-wide damped vent tube extends bass response without the "one note bass" problem found in other ported systems. Dynamic range is incredible due to the large amount of low frequency air movement.

Cabinet and Bracing: A one-inch thick front baffle provides exceptional vibration control and image solidity, while one-inch MDF fiberboard interlocking braces provide exceptional rigidity and freedom from boxy colorations. The internal damping consists of thick acoustic felt lining and Dacron stuffing to eliminate cavity resonances. Large carpet spikes are provided.

Size: Midrange/Tweeter (12.5"h x 8"w x 20"d). Woofer (25.25"h x 8"w x 20"d). System (38.5"h x 8"w x 20"d).

Weight: Woofer module: 52 lbs. M/T module: 26 lbs. System: 78 lbs. each (up to 128 lbs. each with lead shot).

Driver Complement: 2 x 6.5" woofers with new laminate material and newly developed ceramic coating, 1 x 6.5" midrange driver, 1 x 1" poly-tri-laminate silk-dome tweeter, 1 x 1" rear firing ambience mid/tweeter with fabric dome and transmission-line loading. All drivers use our proprietary Advanced Motor System with low distortion design.

Crossover: Acoustic fourth order, at 200 Hz and 2.2 kHz, optimized for flat off-axis response and phase consistency over a wide Global Axis. Very high quality parts are used, including film-foil capacitors and custom air-core inductors that can handle up to 1500 watts before saturation, with computer-optimized internal wire. The VR-4JR Mk.II offers further improvements, changes and refinements in these crossover networks


Binding Posts: Double sets of five-way rhodium posts enabling bi-wiring. Single wire can be used with optional Data Link connector (see pictures below).

 

Ambience Driver: 1" treated fabric dome with Wave Guide and transmission-line rear wave loading. Ambience circuit uses Dimensional Control (effects level) to compensate for room acoustics and soundstage depth. Provides a Global Axis polar response pattern to simulate live musical reproduction.

Frequency Response: 23-20 kHz, +/- 2 dB, 20 Hz-25 kHz -6 dB, (+/- 1dB at midband).

Impedance: 6 ohms avg. (4 ohms 20 Hz-150 Hz; 8 ohms 150 Hz-20 kHz).

Recommended Power: 20 watts up to 300 watts music power.

Sensitivity: 89 dB @ 1w/1m using 2.83 v (91.5 dB in room with boundary reinforcement).

Warranty: Twelve years Parts and Labor, excluding burned voice coils due to amp clipping. Transferable to second owner.

Finishes: Available in book-matched wood veneer finish African Hazelwood. A satin-gloss polyester resin clear-coat protects the fine wood surfaces.

Expected price VR-4JR "Anniversary" Model € 5.998,00 per pair, incl. 19% VAT.

12 Years official Dutch Warranty.

  • WHAT'S NEW IN THE VR4JR MARK II VERSION:

    Although our VR-4JR speaker system has been awarded the highest accolades by seven international magazines over its past four years in production (unchanged), development of our latest model VR-5SE ($ 25,000 / pair) resulted in numerous technical and engineering advances that provided the opportunity for significant trickle-down enhancements to our lower priced models.

    These new refinements and advances in technology are now implemented in the newly released VR-4JR Mk2 as well as the new VR4SR also now in the Mark II stage. Over the past years, production, materials, fuel, shipping and assembly costs have all dramatically risen. In response to these conditions we have sought to offset higher costs by providing significant improvements in our products. So while these collective changes have resulted in a new MSRP (manufacturers suggested retail price) of only € 6,299.00 / pair, the new VR4JR MK II is a significant leap forward in performance, smoothness, articulation and transparency over its predecessor while still offering enormous value compared to any other speaker in its price class.

    Improvements and changes in the VR4JR Mk II:
    1. Tighter bass with higher clarity, achieved with a new woofer featuring significantly improved laminate material; the new coating is a ceramic damping material that replaces the older Bextrene plastic laminate coating; the new coating adds additional stiffness and damping very close to that of our aluminum and magnesium coned woofers supplied with the VR-4SR and VR-5SE models.

    2. Improved transparency and clarity in the lower midrange, achieved by new internal woofer-chamber damping materials. In addition, customers are now supplied with 20 pounds of factory-installed sand to dramatically reduce cabinet resonances in the vital lower midrange area.

    3. Greater midrange transparency and clarity achieved by improved internal damping of the upper midrange module; this mod includes a high-tech combination of multiple new absorption materials to vastly improve the overall vocal clarity and transparency.

    4. Higher power handling and reliability achieved by the addition of a new active circuit protection system against voice coil failure and/or burnout. This variable-state device monitors and holds constant the input voltage to the voice coil and is not a user-replaceable fuse or other part that can wear out or cause sonic degradation. In operation, the circuit is sonically "invisible" but will give owners added protection for their investment.

    5. Improvements, changes and refinements in the crossover networks to provide more detail and dynamics especially in the mids and lower ranges. There are also a number of other production refinements made in this model.

     
  • HOLLAND LINK provides an OPPORTUNITY for your TRADE-IN or UPGRADE:
    if you decide to upgrade to a higher level Von Schweikert loudspeakers within two years after your original purchase, we will deduct 80% of the original purchase price from your new investment as your trade-in price!
    Enquire for this exceptional offer at Holland Link.
    Just phone us at 0031(0)113342290 or send us an
    email.
  • Other trade-ins are negotiable.