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VON SCHWEIKERT AUDIO
VON SCHWEIKERT AUDIO
W WO OR RL LD D- -C CL LA AS SS S S SP PE EA AK KE ER R S SY YS ST TE EM MS S F FO OR R A AU UD DIIO O A AN ND D H HO OM ME E T TH HE EA AT TE ER R
VR-4SR MK2
K
VR-4SR M 2
INSTRUCTION MANUAL
INSTRUCTION MANUAL
Released October 2007
1
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VON SCHWEIKERT AUDIO VON SCHWEIKERT AUDIO VR-4SR MK2 VR-4SR MK2 TABLE OF CONTENTS IMPORTANT NOTES........................................................................................................PAGE 2 BREAK-IN..........................................................................................................................PAGE 2 INITIAL SETUP......................................................................
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Please read the following instructions regarding setup, as imaging and bass response must be optimized to your particular room. Since every listening room will have different dimensional ratios and reflective/absorptive coefficients, each setup will be different. A thorough break-in must be conducted in order to realize the full benefits of the VR’s transparency and imaging accuracy, and several experiments with placement must be undertaken. In situations where these instructions are not f
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SETUP 1. Please do not install the spikes until the proper placement has been determined. If you try to move the speakers around with the spikes installed, you can damage your floor and/or rip out the spikes, so please be careful and install the spikes only when you are confident that the speakers have been placed in the proper position. You will be moving the speakers several times in order to listen to different aspects of the optimization and the spikes will only make the movement more
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the best image focus and widest sound stage. However, since your taste may vary, you may well prefer the extra depth achieved with no toe in; i.e., the speakers parallel to the side walls. ON SHORT WALL: Placing the speakers on the short wall and sitting far back in the long end of the room may give you a concert hall experience if your room is large. Long reverberation times due to long distances from boundaries can impart a grand sense of scale with classical music, although smaller roo
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CARPETED FLOORS: Install the spikes after break in – this is easily accomplished with two people, one tipping the speaker back while the other installs the spikes. Be careful not to let the M/T unit fall off the woofer module! If one person installs the spikes, remove the M/T modules before attempting to install the spikes. Make sure that you level the speakers so they don’t rock, and use the locking nuts to make sure the spikes won’t vibrate loose. You will be amazed at the improvement
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WOOFER MODULE BINDING POSTS: Note that two pairs of binding posts are offered on the woofer module, and are generally connected together with the metal straps provided when only one cable is to be used. These two pairs of binding posts on the woofer module enable a “quad” cable hookup for bi-wiring – this setup requires the use of the Data-Link. If you have previously purchased a “quad” biwire cable, with all four conductors inside one jacket, the woofer module is where you will connect
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Balancing of the volume levels when using amps with different input sensitivities can be accomplished by outboard level controls available from your dealer at very modest cost. If the amplifiers have input sensitivities which are fairly close, even if they are different brands, there will be no need for level controls. VERTICAL BI-AMPING: If two stereo amplifiers of the same brand and model are available, try using this method of wiring. One channel will drive the woofer module, while the
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omnidirectional sound, and your ear/brain hearing mechanism will clearly know this. The VR Virtual Reality design will simulate this huge soundfield, with it’s involving depth and dimension. However, correct placement is required to achieve the best possible sound quality. Amazingly, moving the speaker only a few inches can make the difference between good sound and great sound due to the reflective properties of your room! Note that this fact is true with most high quality speaker systems.
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curtain of sound between them, your room’s reflections and/or seating distance is destroying the coherent sound that was engineered into the VR design. To eliminate this unwanted effect, you will need to determine whether the room’s reflections are at fault, or whether you are not in the “sweet spot.” To find the focal point of the VR system, move forwards and backwards slowly while listening to the pink noise “ball.” You can either rock in your listening seat, or move back and forth b
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BASS RESPONSE TUNING BACKGROUND INFORMATION: Since enclosed rooms will affect the bass response due to standing wave formation, a woofer tuning feature has been designed into the VR series of speakers. Deep bass in the 20-40Hz range is highly desirable in a reference speaker design, since hall reverberation at low frequencies is a sonic clue to both depth and hall size. Classical music simply sounds anemic and artificial without deep bass. In addition, the wide dynamic range found in po
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lengths that the waves take before arriving at the listening position. Although the first arriving bass wave will have flat frequency response, fractions of a second later the same waves have bounced off of the front wall, rear wall, side walls, and the floor. These reflections both reinforce and cancel the original direct wave, depending on the wave length vs. the path length. If the path length is an even multiple of the direct wave at any one given frequency, the reflection will reinforce
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grapefruit into the vent and push the ball upwards, into the woofer cavity. Do this in both speakers, and if one handful is not sufficient to reduce the overall bass level, continue to place Dacron balls upwards into the woofer cavity. B). If the frequency range between 20-30Hz sounds too powerful in your particular room, simply place a large handful of the Dacron in each vent tube; this will lower the efficiency of the vent tuning. If the bass is still too loud, place another handful in ea
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metal film resistor to equalize the sensitivity of the louder speaker in order to make a fair test.) Here at the factory lab, we have used several brands of electrostatic and ribbon speakers for comparison and have been consistently amazed at the results we are achieving with dynamic cone drivers! Since the VR design is quite transparent, lacking audible coloration and distortion, it is necessary to use only the finest sounding equipment available to drive the VR-4SR Mk2's. This does
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most wear to the electronic components in an amplifier results from the inrush of current from the wall into a cold part. Once the unit is left on, the voltages and temperatures stabilize, resulting in better sound and component life. The electric bill will not reflect a huge price difference, as electronics at idle do not use much electricity (other than Class A amplifiers and tube amps). 9. Too Much Rear Ambience Driver Level. Turn down the rear driver if system is too bright. 10. Room Ef
