High
Efficiency, High Input Resisting 30 cm Woofer
In order to
make the most of the horn type speaker system, the wofer is required to be
highly efficient and to have a frequency characteristic to go smoothly with the
mif-range. In this respect, the system uses Canadian coniferous pulp and cones
with liner elements combined, thus assuring a high efficiency of 95 dB/W/1m.
Also, to improve the linearity coping with a large input, well ventilated high
compliance dampers and non-directional urethane edges are employed.
Furthermore, polyester insulator and polyamide layers are used for the voice
coils, and extra-high heat resisting resin film is used for the bobbins so that
the system is able to withstand continuous since waves of as high as 100 Watts (DIN RMS).
Wide-directional
Radial Horn Mid-range
Frequency
characteristics with wide-band and excellent directivity are obtained with a
radial horn widening at 150 deg. From aluminum die-cast horn throat and newly
developed shell type equalizer (mid-range). The driver section is made of
extra-thin aluminum alloy of 35ф, 30 µm thick, and the edge, provided with slits, employes perforated
pole pieces to improve the low-range characteristic, and is high input
resisting with heat radiating aluminum bobbin of µm, CCAW (copper coated
aluminum wire), and heat resisting voice coils.
Wide-directional
Radial Horn Tweeter
This
wide-directional radial horn, widening at 150 deg., is of high precision solid
type made of aluminum diecast. The driver section consists of metalized
polyester film vibrating reeds and employs a powerful magnetic circuit using a
large aluminum magnet, and is high input resisting with use of heat resisting
voice coils.
Linear Phase
Network
Linear phase
characteristics are obtained by a dividing network combining 12 dB/oct and
inductive M types, thus making reliable transfer of waves possible. Also,
low-distortion filament cores are employed for choke coils.
Control
Tower
It is
equiped with a thermal relay protection circuit in oreder to protect the
mid-range and tweeter from excess input or abnormal signals. Also, to use it as
a multiamp system, it is provided with multi-amp input terminal along with a
multi-amp switching connector. Besides these functions, dividing network, level
control and input terminal are concentrated at the control tower which also
serves to secure drivers of the mid-range and tweeter, thus improving the
controllability.
Power
Handling Capacity
The power
handling capacity of this speaker system is 150 watts (music), and 100 watts
DIN (RMS).
Speaker
Protection Circuit
This system
is equipped with a speaker protection circuit to protect the speaker from
excess input or abnormal signals. If excess input is applied to the speaker, it
will be automatically cut off by the protection circuit.
Multi-Amp
System
The
impedance of each unit woofer, midrange and tweeter is 6 Ω . Therefore, make
sure that the load impedance of the amp used ranges from 4 Ω to 16 Ω
When the
multi-amp switching connector is set to "multi amp system", the
network, level control and protection circuit of this system are disconnected.
The sound volume of each unit can be adjusted by turning the volume knob of
each amp.
It is
recommended to use the system with crossover frequencies between speakers as follows:
Woofer -
Midrange : 1,2 kHz - 2 kHz
Midrange -
Tweeter : 5 kHz - 10 kHz
In order to
protect the speaker unit against low-range noise from the amp, connect a
bipolar condenser of about 68 µF between amp and speaker, and about 10 µF to
tweeter respectively in series.
Specifications
Type: 3-way, 3-speaker system
Speakers:
Woofer
: 300 mm (12") cone type
Midrange
: Horn type
Tweeter
: Horn type
Impedance: 6 Ω
Input Power:
Music : 150 W
DIN : 100 W (RMS)
Output
Sound-Pressure Level: 95 dB/W /1m
Crossover
Frequency: 1500 Hz, 6500 Hz
Frequency
Range: 37 - 22,000 Hz
Dimensions
(W x H x D): 525 x 846 x 424 mm
(20-5/8" x 33-1/4" x 16-5/8")
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