Von Schweikert Audio
World Class Reference Speaker Systems for Music and Film
LCR-15 Full-Range
Speaker System
he LCR-15 may be used as a fullrange speaker in conventional
T
dedicated dialogue center channel in
Home Theater applications (LCR
designates a speaker that can be used in
the Left, Center, and Right main
positions). As a full-range speaker for
music, VSA engineered powerful bass
response, combined with spectacular
stereo imaging, into a small cabinet. For
use as a center channel, we created
superb vocal intelligibility by use of two
small bass/midrange drivers, as opposed
to a larger singular unit, enabling a quasi
three-way design.
Our design approach was facilitated by
the use of special diaphragm materials
providing the highest Clarity Factor
available. Our composite woofer cone,
fabricated from cellulose acetate pulp
impregnated with mica substrate and
damped with carbon fiber/resin polymer,
has a very high Youngs Modulus (ratio
of weight to rigidity). This permits the
woofer/midrange drivers to deliver
thundering bass response in combination
with breathtaking vocal clarity and
intelligibility. The Ferrofluid cooled
composite fabric/polymer resin dome
tweeter can handle the dynamic range
and volume levels necessary for thrilling
realism without harshness or distortion.
In order to reproduce deep and powerful
bass without the use of reflex porting,
which often adds lower midrange
anomalies as well as “one note bass”,
we chose a pressure release system.
Sealed box designs eliminate midrange
resonances but suffer from limited
stereo configurations, or as a
excursion and dynamic range due to an
air spring. Our cabinet utilizes two
“breathing tubes” to decrease this
pressure, thus increasing dynamic range.
Note that these vents do not contribute to
bass output, so mounting within a wall
unit or cabinet is perfectly acceptable.
The LCR-15’s specialized crossover
design allows the speaker to be used
horizontally or vertically. Our GAIN
(Global Axis Integration Network)
crossover system enables flat frequency
response with either placement. The
GAIN filter is a synthesized steep-slope
design formed from cascading low order
filters in an arrangement enabling a
“bubble” of sound to be radiated, rather
than the conventional “flashlight beam”
effect caused by excess driver overlap.
Additional benefits to our circuit include
fewer parts in the signal path,
audiophile-quality parts to increase
clarity and transparency, as well as resin
potting to reduce vibrational distortion.
Von Schweikert Audio
World Class Reference Speaker Systems for Music and Film
Specifications
System Type: Shielded quasi three-way
full-range dialogue/general purpose
speaker system. One of the two woofers
is used for bass purposes only, while the
second is used for midbass and
midrange. Can be placed horizontally or
vertically. The optional VR-Stand may
also be used.
Bass Loading: Aperiodic Pressure
Release design using 100% stuffing
density. Note that the vents are not bass
reflex ports, but act as pressure release
orifices. Can be placed inside a wall
unit.
Bass Drivers: 2-5.5” heavy-duty
bass/mids with cast frame, cellulose
acetate pulp cones impregnated with
mica substrate and damped with a
carbon fiber/resin polymer, Low
Distortion Motor system, butyl rubber
surrounds, long throw spider, high
temperature voice coil and magnetic
shielding. This new driver design has
very natural sound quality with inaudible
coloration or distortion.
Tweeter: 1” composite silk/polymer
resin dome with Ferrofluid cooling, high
temperature voice coil, Low Distortion
Motor design, and magnetic shielding.
This tweeter is very musical, without
harshness, even at high volume levels
that would cause “standard” tweeters to
distort.
Crossover: Global Axis Integration
Network (synthesized steep filters with
phase-consistent behavior) with 220Hz
and 2.2kHz crossover points. This
crossover design has been engineered to
radiate sound in a wide “bubble” instead
of a “beam”, so that phase and frequency
response do not radically change offaxis. The audiophile-quality parts have
been hand selected, including
polypropylene capacitors and premium
air core inductors.
Binding Posts: High quality audiophile
five-way binding posts with rhodium
plating.
Frequency Response: 35Hz to 25kHz
(-6dB points, in-room)
Sensitivity: 87.5 dB @one watt/one
meter.
Power Handling: 8 watts min., 200
watts peak.
Impedance: 8 ohms nominal (7 ohms
minimum, 19 ohms maximum). SET
friendly!
Weight: 28 lbs. packed for shipping, 22
lbs. raw.
Dimensions: 17.5” Wide x 10.25” Deep
x 7.5” High (horizontally placed).
Warranty: Ten years parts and labor,
excluding abuse such as burnt voice
coils.
Finishes: Blond Maple (pictured), black
ash, dark red cherry, and African
Hazelwood.
Von Schweikert Audio
930 Armorlite Drive
San Marcos, CA 92069 USA
(760) 410-1650 Fax 410-1655
Website:
www.vonschweikert.com
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