High-Resolution
4-Way, 7-Speaker System
Really Rich Bass -
the 17-inch woofer has non resonant frame and a cone that could move mountains
If you could ut
enough power into the Sansui SP-X9700
you probably could move mountains, or at least create a couple of
man-sized quakes. As it is, the very high power capacity of the system is more
than enough to handle most of today's mammoth power amps and receivers - 280
watts.
Woofer design and
construction in such a large system naturally need to be fully up to
state-of-the-art. Standards , if you want to avoid spurious vibration,
excessive heat and the various kinds of distortion they lead to. Sansui forms
the cone of a special pulp formulation, gives it a carefully calculated
curvature, adds corrugations to break up damaging surface waves, and thus
preserves all the dynamic punch of your music's "bottom end" with
ease.
The bobbin in the
woofer voice coil is of luminum for quick heat dissipation the coil itself is
coated with a heat-resistant film. Together they provide high linearity up to a
tested level of 200 degrees Celsius
For the magnetic
circuit we've set a high flux density of 11,300 gauss and thus achieved
mor-than-adequate drive and damping. Of special note is the concave recess at
the top of the center pole, helping to keep the top plate magnetically
saturated for the reduction of harmful 3rd harmonic distortion. Musicality is
richer at all input levels.
Finely, frame
dynamic were analysed in several prototype models until we eliminated
destructive resonance. The entire woofer assembly is structurally sound - and
no amount of high-amplitude input up to the rated capacity can cause
"woofer buzz".
Close-up Midrange:
Special Sansui techniques preserve the intimacy of vocals, fidelity of
fundamentals.
High efficiency is
just one of the design criteria met and surpassed by the 8-inch midrange
speaker unit in the Sansui SP-X9700. to preserve the natural
"close-up" feeling of vocals, and to retain a high degree of fidelity
with the fundamentals of musical instruments, we chose a cone pulp mixture of
highly elastic, thermally stable fibres.
The new method of
pressing the cone has ensured a high Signal-to-Noise Ratio and a flat Frequency
Response over the Frequency Range assigned to this unit. Sound transparency and
crisp, intimate "presence" are the benefits,
For increased power
handling, the same techniques used in the voice coil and magnetic circuit of
the woofer are again employed here harmonic distortion is discouraged even when
the maximum input of 280 watts is introduced over long period of time.
Cracklin Clean
Highs: Well-defined high-frequency reproduction is sent into every corner of
your room.
Dual horn tweeters
cover the frequency range between where the midrange leaves off and the
supertweeters take over. This is the high range where musical definition is
determined for cymbals, reeds, strings and the upper harmonics of most other
instruments, electric and electronic instruments included.
The
two horn tweeter are identical, and are connected in parallel to increase
efficiency and power handling capacity. Each has a powerful magnetic circuit
and a phenol-resin diaphragm, a precision-machined zinc die-cast acoustic
equalizer is positioned as closely as technically possible to the diaphragm to
maintain phase integrity and extend the high-frequency limit. The drivers are
then coupled to non-resonant zinc
die-cast horns formed with sectoral fins to improve dispersion and transient
response.
Triple Superteeters:
What you can't hear Can hurt.
The three precision
supertweeters in the Sansui SP-X9700 cover the extreme high-frequency range
clear into the supersonics up to 23,000 Hz with accuracy and fidelity. You may
argue that you can't hear the super-highs, but our tests have shown that when they
are reproduced with integrity, the frequencies you Can hear come out cleaner,
crisper and more musical.
Again special pulp
is used in the cone diaphragms, which are then installed with mylar center caps
for phase linearity. The two of supertweeters is mounted on a unique tri-sided
projection on the front baffle so that the super-highs are bearned into every
corner of your listening room.
Level Control:
Special low-distortion network improves musicality.
Three positions are
provided on the front-panel Level Control: Natural; Soft-1, and Soft-2. its esy to match the
speaker system's response to yur acoustic environment, using the Soft positions
when you feel that highs are too "brilliant". The control works from
a newly-designed crossover network featuring low electrical loss, high power
handling and low distortion.
Real-Wood Grille:
Sansui's traditional Kumiko design adds distinction
High-density
"acoustic" particleboard forms the massive bass reflex enclosure of
the SP-X9700 for resonance free reproduction. Standing waves are damped by two
types of sound absorbent inside. The exterior cabinet is finished with
simulated walunt grain and the removable real-wood grille, with a beautiful
hand-carved traditional "Kumiko" pattern grille.
Specifications
Speakers
Woofer : 1 x 432 mm (17") cone-type
Midrange : 1 x 208
mm (8") cone-type
Tweeter : 2 x 171x59 mm (6-11/16" x 2-5/16")
horn-type
Supertweeter 3 x 49
mm (1-15/16") cone type
Max. Input Power
: 280 W
Impedance: 8 Ω
Sensitivity: 100 dB (JIS at 1m distance
Frequency
Range: 22 - 30,000 Hz (normal listening
room)
Crossover
Network: 4-way, 16 dB/oct. 12 dB/oct;
6 dB/oct.
Crossover
Frequencies: 1,000 Hz, 7000 Hz; 15,000
Hz
Dimensions (H x W x
D): 688 x 470 x 270 mm (27-1/16" x
18-1/2" x 10-5/8")
Weight: 20,3 kg
(44,8 lbs)
Finish: simulated
Walnut grain
