The sound of Cizek,a
brave new world in loudspeakers technology.
Brave, because we
dared to embark on a complex journey into the center of sound. A journey
destined to explore each element of sound reproduction, to seek out
imperfection and institute change.
But mere change was
not enough. At Cizek Audio Systems, we found it necessary to go beyond
refinement to the point of creation. Creation which resulted in 8 new patents
to bring you closer to sound at its source. Sound rated by the experts to be
superior to loudspeakers selling for many times the price.
Yet Cizek's primary
breakthrough lies in a crossover network that eclipses all others. A system so
precise, so accurately formulated, that we can guarantee response
specifications to withhin ±1 dB. Combined with a power handling capability of
15 to 150 watts per channel, this full range, 2-way acoustic-suspension
loudspeaker yields a frequency curve that is exceptionally flat from 35 Hz - 18
kHz.
And for superior
fine tuning, the Cizek loudspeaker features three individual frontal controls.
These adjustments are specifically engineered to balance the sound to the
acoustics of your room, simulate concert hall conditions, and incrase bass
response if you so desire.
Come compare, and
you'll discover our breave new world in loudspeaker technology.
Cizek - making
footprints in the sounds of time.
In our design we
have minimized the diaphragm excursion of the high frequency driver in the
region of crossover in order to lower distortion and increase power handling
capability.
By not using a deep
front edge we have minimized the effects of diffraction from the front edge
terminations. We use an acoustically transparent foam grille.
To
maintain a high standard of quality control, we found it necessary to design
and manufacture our own 10" woofer. Incorporating a heavy 1kg (2,2 lb)
ceramic magnet, this woofer produces an air-gap flux-density of approximately
13 kilogauss. For increased power handling capability, we employ a long
2-layer, 1½" (38 mm) diameter
voice coil wound with #28 wire. In order to assure extended deep bass response
with minimal distortion, the woofer was designed with a free-air resonance of
nominally 16 Hz, so that in the total suspension stiffness is contributed by
the air that is sealed inside the cabinet.
The three controls,
located in the recessed panel below the woofer on the front of the loudspeaker,
allow unusual flexibility. The High Frequency Contour Control (H.F.C.) is a
5-position switch which allows you to introduce a variable "rolling-off"
of the high frequencies. The High Frequency Level Control (H.F.L) allows you to
raise and lower the entire response of the tweeter with respect to the woofer.
The Q switch allows you to change the Q from .6 to 1.
Input terminals are
equipped for standard double-banana connection.
Special Features
Cabinet is
internally braced to minimuze panel resonance.
Cabinet is sealed so
that we have a minimum return time of four seconds on the woofer to extend the
low frequency response and minimize the adverse effects of turntable rumble.
Through a unique
design our crossover combines the advantages of a first-order
constant-voltage-transfer network with the advantages of higher order networks.
To avoid distortion
due to core hysteresis and saturation, the crossover choke is wound air-core
with 17-gauge wire.
Crossover circuit
utilizes all 5% or better tolerance components.
Specifications
System: 2-way acoustic suspension system
Drive units
1 x 254 (10")
acoustic suspension woofer
1 x 25,4 (1")
hemispherical dome tweeter
Crossover
Frequency: 1,500 Hz acoustical and
electrical
Impedance:
4,25 ohms ±.25 ohms
from 100Hz to 15kHz with controls in Flat position and Q adjustment in .6
position; 7,25 ohms with Q in the 1 position
Efficiency:
Average sensitivity is 88 dB at 1m with 1watt input into 4,25Ω
Minimum
Power requirements: 15 watts RMS into 4Ω
Power Handling: Up to 150 watts music power per channel
In-box
Resonance: Nominally 38 Hz
Low-frequency
Response: Flat at 38 Hz or -4 dB
(dependant upon Q adjustment)
Response: 35 Hz - 17 kHz, +1½ dB, -2 dB (measured outdoors in a 2π environment)
System Q: .6 or 1
Flux Density: 13,000 gauss (woofer); 15,000 gauss (tweeter)
Volume of
Enclosure: 39,6 liters (1,4 cu ft)
Cabinet
Dimensions (H x W x D): 635 x 394 x 241
mm (25" x 15½" x 9½")
Weight Net: 19,4 kg (42,8 lb)
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