Von Schweikert Audio VR-4jr Lead Trap, Ancillary Equipment, Von Schweikert Audio, Armorlite Drive

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LEAD TRAP

Von Schweikert Audio

World Class Reference Speaker Systems for Music and Film

power. In these cases, it will be necessary to move either the speaker position or the listening position in order to optimize the response. By playing a recording with a repeating bass line, try walking around the room until you find the places where there is apparent bass. It will be necessary, in some cases, to reposition the speakers in order to allow the room to boost the bass by using the natural ‘gain’ of the boundary reflections. Simply move the speakers closer to the rear wall or side-wall in small increments until the bass sounds right.

LEAD TRAP

The VR-4jr has a special compartment at the bottom of the cabinet, hidden by the removable bottom plinth. This compartment was designed to be filled with lead shot in order to damp spurious cabinet resonances. Bass and lower midrange frequencies will be tightened when the Lead Trap is filled, as the movement of the damping particles adsorbs vibration. We have found that two 25 lb bags of lead shot from a gun or sporting goods store is sufficient to fill the cavities in both speakers (the lead will not completely fill the chamber, it takes around 180 lbs to fill both chambers, but that may be excessive).

•Place the VR-4jr upside down on a soft surface, such as a towel, and remove the bottom plinth.

•Poor approximately 25-50 lbs of lead into the opening. Shake the speaker until the lead settles.

•Replace the door and plinth and you're done. Note that the midbass/lower midrange frequency bands are now cleaner and tighter.

ANCILLARY EQUIPMENT

The VR Series is far more transparent than any other competing design, including electrostatics. (If you don’t believe this, put any electrostatic next to a VR and use a transparent switching device such as a copper knife switch to directly compare the sound of the VR to the electrostatic. Make sure that you use the same channel, since the electronics may have a large difference in sound between the channels, and the same brand of cable. It may be necessary to use a metal film resistor to equalize the sensitivity of the louder speaker in order to make a fair test.) 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-4's. This does not mean you must purchase the most expensive gear, just good sounding electronics, especially in the front end. Many digital products have limited depth and excess treble brightness caused by overemphasis of harmonic structure. The VRs will enable you to easily hear the differences even between digital cables, which theoretically, should have no sound at all. Any sonic qualities you attribute to the VRs are actually coming from the chain preceding the speakers. When using neutral driving equipment, the VRs will be found to have virtually no sound of their own!

930 Armorlite Drive,

San Marcos, CA 92069

13

Ph (760)410-1650

Fax (760)410-1655

 

E-mail:albertvonn@aol.com ~ Website:www.vonschweikert.com

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Contents Von Schweikert Audio TABLE OF CONTENTS930 Armorlite Drive San Marcos, CAVon Schweikert Audio SHIPPING DAMAGE930 Armorlite Drive San Marcos, CABREAK-IN INITIAL SETUPVon Schweikert Audio 930 Armorlite DriveVon Schweikert Audio Starting Location930 Armorlite Drive San Marcos, CAVon Schweikert Audio in the center. Your dealer can recommend tuning products he/she carries and may be able to install them. If your dealer does not offer this service, call the above- mentioned tuning companies for further information930 Armorlite Drive San Marcos, CAVon Schweikert Audio WIRING930 Armorlite Drive San Marcos, CAVon Schweikert Audio PLACEMENT930 Armorlite Drive San Marcos, CA930 Armorlite Drive Von Schweikert AudioSan Marcos, CA 2. The secondary waves, which are reflected from the room’s boundary surfacesVon Schweikert Audio 2.If you are not sitting in the focal point, the noise will be diffuse, without a center image. Although you will hear noise coming from the center, it will sound as diffuse as the sound coming from the speakers themselves. Even though the speakers will image music when set up like this, the imaging will be diffuse and non-localized.There won’t be enough ‘body’ to the images, and it will be hard to hear space between the instruments. There is a distinct lack of image focus in this situation930 Armorlite Drive San Marcos, CAVon Schweikert Audio BASS RESPONSE TUNING930 Armorlite Drive San Marcos, CAVon Schweikert Audio GENERAL TUNING INFORMATION Both the volume level of the bass and the frequency response of the woofer system can be altered easily by several methods in order to equalize the room’s influence on the bass response. Although the VR bass systems measure ruler flat in larger rooms that have good dimensional ratios, using both gated sine wave and maximum length sequence FFT signals, smaller rooms tend to have bass anomalies and overloading problems with low frequencies due to the long wavelengths involved930 Armorlite Drive San Marcos, CA930 Armorlite Drive Von Schweikert AudioSan Marcos, CA ANCILLARY EQUIPMENT LEAD TRAPVon Schweikert Audio 930 Armorlite DriveVon Schweikert Audio Bright Sound930 Armorlite Drive San Marcos, CAVon Schweikert Audio ROOM ACOUSTICS930 Armorlite Drive San Marcos, CAVon Schweikert Audio SPECIFICATIONS930 Armorlite Drive San Marcos, CAVon Schweikert Audio Weight Midrange/Tweeter 26 lbs each. Woofer 52 lbs each. System 78 lbs each930 Armorlite Drive San Marcos, CA
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