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Von Schweikert Audio
930 Armorlite Drive, San Marcos, CA 92069
Ph (760)410-1650 Fax (760)410-1655
E-mail:albertvonn@aol.com
World Class Reference Speaker Systems for Music and Film
~ Website:www.vonschweikert.com
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harsh, lacking depth. Most experts recommend leaving the equipment on to avoid the
damage associated with cold turn-on, since the 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. If in doubt, check with the electronics manufacturer or dealer.
9. Bloated Image or Poor Focus. Slap echo from hard walls, or too much rear
Ambience.
10. Room Effects: Boomy Bass, Harsh Highs. Not many audiophiles realize how
important their room acoustics are to the overall soundfield. No matter how good the
speaker system and driving electronics, the room will have great influence over the final
sound, whether for better or worse! Harsh highs can be created by echoes reflected from
large wall surfaces with unbroken surfaces. If you can hear any echo when clapping
your hands, you will need to use some room treatment products.
11. Lack of Bass. Check the wiring to the woofer modules and make sure they are in
phase. Rooms can add or subtract bass response, but correct tuning and placement can
ameliorate these problems. If your electronics or cables are really bright, you may feel
that there is more treble than bass. Try substituting different electronics or cables and
recheck your room placement.
ROOM ACOUSTICS
Many books have been written about room acoustics, and there is not enough space in
this manual to give detailed information on how to do it right. However, the general rule
is to use 50% absorptive/50% reflective ratios when covering the room’s surfaces, such
as carpeting, drapes, stuffed furniture, bookshelves filled with books, records, etc. It is
helpful to damp the first reflection points, which are the boundary surfaces halfway
between the listener and the speaker cabinets. This includes the ceiling, walls, and floor.
Hard plaster ceilings will reflect treble energy back down towards the listener, and
should be treated with acoustic tiles (the soft and porous type) or damping pads made
from foam or fiberglass. The walls can have a decorator rug, drapes, or diffusers at the
first reflection point, and the floor can use carpeting. We have used plants and trees to
diffuse the echo in our very large sound room, and found that this works better than
simply absorbing the high frequency reverberation. Some of these diffusion devices are
made by Acoustic Sciences Corporation (ASC), Echo Busters and RPG, along with
others. Tube Traps by ASC are placed in room corners and will absorb bass boom and
flutter echo in the mid/treble region. Michael Green offers Corner Tunes, which are
placed in the upper corner joints of the wall/ceiling junction. Call your dealer for more
info.
One last thing: if your VR speaker system does not elicit goose bumps, your set-up
is not optimized!