Theatre and
Commercial System - designed for theatre use, La Scala is a wide-range
loudspeaker, adaptable for custom installation or as a portable unit for
professional musicians.
La Scala may
be used in a corner or along a wall. It is a full 3-way horn system of the most
compact size currently available, yet is in no way a compromise of sound
quality.
La Scala
employs the same drive components as the Klipschorn. The midrange horn is
slightly smaller than that of the Klipschorn and teh woofer is shorter and is
folded into two paths instead of three as in the Klipschorn.
Only Klipsch
speakers and Klipsch 3-speaker master stereo system meet the 8 cardinal points
of reperoduction:
1.Freedom
from distrortion. Minimum distortion requires small amplitudes of air mass
movements, even at peak transisnt power output. Bass diaphragm motion should
not eceed 1/16 inch. Corner placement reduces distortion three fourths.
2.Optimium
size of speaker. Large enough to reproduce the lowest audible bass tone at peak
transient power output without distortion; not so large as to produce a
separation of bass and treble events. Corner placement increases effective size
of speaker 4 times.
3.Freedom
from rattles.
4.Freedom
from shadows. Obstructions between high frequency speaker and listeners can not
be tolerated - treble wave-lengths do not turn corners.
5.Freedom
from cavities. The space under a speaker box formed by mounting it on legs can
destroy the bottom octave of response and deteriorate the next 2 octaves.
6.Adequate
spacing for stereo. In a 14 x 17 foot room, for example, the 17-foot wall is
apt to be best for the stereo speaker array.
7.Accurate
spatial values. Ability to localize the virtual sound sources in their original
spatial relationships requires 3 widely spaced speakers, regardless of size or
type, retention of this quality over a wide listening area requires toe-in of
the flanking speakers.
8.Flanking
speakers toed-in. Such toe-in is naturally provided by corner speakers. The
effect is to reduce shift of the virtual sound source for different listener
locations. This is the only way to achieve a wide area for listening.
Specifications:
Frequency
Response: 42 Hz - 17,000 Hz ±5 dB
(measured indoors)
Total
Modulation Distortion: 3,0% max. at 110
dB at 3 m.
Sound
Pressure Level: 96 dB SPl at 1 watt
input
Acoustic
Power Output (maximum):
Low-frequency
: 15 acoustic watts (150 Hz)
Mid-frequency
: 5 acoustic watts (1,000 Hz)
High-frequency
: 0,4 acoustic watt (8,000 Hz)
Electrical
Power Input (maximum continuous):
Broadband
Program : 200 watts
Nominal
Average Beamwidth: 100° Horizontal; 54°
Vertical
Drive
Components:
Woofer
: One Klipsch 15" K-43
Low-frequency Driver
Midrange
: One Klipsch 0,7" K-55 (K-400
Horn)
Tweeter
: One Klipsch K-77 Horn Tweeter
Crossover: the type AA Crossover Networkbalances the
system response.
Nominal
Crossover Frequencies : 400 Hz and 6 kHz
Woofer
: 6 dB/octave rolloff above 400 Hz
Midrange
: 6 dB/octave rolloff below 400 Hz and 3
dB attenuation provided by voltage transformation
Tweeter: 18 dB octave rolloff below 6 kHz with zener
diode protection.
Impedance
Minimum/Nominal: 4,9 ohms at 90 Hz / 8
ohms
Dimensions
(W x H x D): 603 x 900 x 622 (23-3/4" x 35-1/4" x 24-1/2")