Point-Sound-Source
Speaker System
For soundstage focus
and precise imaging, the wave-fronts from a speaker’s drive units should
ideally be aligned, arriving simultaneously at the listener’s ears regardless
of the listening position. In other words, the speaker system should appear to
have have only one point sound source. The newly developed flat coaxial two-way
speaker unit, combining midrange and treble drivers, works with a virtual
coaxial woofer to realise a point sound source, providing smooth directional
characteristics over the entire frequency range, without peaks or dips
Phase Precision
Driver (Flat Coaxial 2-Way Speaker Unit)
For faithful
reproduction of mid-range and high-frequency sound, Technics has developed an
all-new flat coaxial two-way drive. The flat mid-range diaphragm is of a
sandwich construction, using lightweight, high-rigidity carbon cloth skins and
aluminium honeycomb core.
It maintains a
perfect pistonic motion over a frequency band extending beyond the crossover
point with the tweeter, while eliminating the frequency distortions caused by
the ‘cavity effect’ in conventional cone diaphragms. The magnetic circuit
employs a large magnet, copper cap, copper shorting ring and short voice coil
with high-density edgewise winding to achieve high drive power and low
distortion, while the speaker chassis is die-cast aluminium, with a
resonance-dispersing structure to eliminate even the smallest unwanted
vibration.
Ultra Wide Range
Reproduction
Thanks to a carbon
graphite dome tweeter mounted at the centre of the flat mid-range drive unit,
the SB-R1 is capable of reproducing frequencies all the way up to 100 kHz. And
with bass extension down to 20 Hz, it’s ready to deliver the vast frequency spectrum
offered by high-quality, high-resolution music sources.
High-Quality Network
Circuit
The High-Quality
Network Circuit was created as a result of extensive designing and listening,
in order to maximise the performance of each speaker unit and achieve a
balanced sound. To prevent interference between the drive units and minimise
the effect of vibration, separate network boards for woofer, mid-range and
tweeter are optimally arranged inside the cabinet.
High Rigidity Round
Form Cabinet
A 50-mm-thick baffle
used in the cabinet supports the speaker units rigidly and suppresses
undesirable resonances, while side panels comprising eight layers of MDF give
the cabinet a curved form, suppressing unwanted vibration and reducing internal
and external diffraction and reflection.
An internal
partition divides the cabinet into upper and lower sections, and eliminates
low-order standing waves in the vertical direction. The choice of absorbent
acoustic material and its position were optimised based on the frequency band
of each drive-unit as well as the cabinet volume, thus further suppressing
standing waves inside the cabinet, and even the rings round each drive unit are
made of a material with high internal loss to eliminate unwanted emitting from
anywhere other than the speaker sound diaphragm.
The glossy finish on
the cabinet is created through a series of processes including repeated
coating, sanding, and polishing, the high degree of craftsmanship complementing
the speakers’ high-quality sound. The finish even suppresses fine vibrations
generated on the cabinet surface, thus contributing to the accuracy of the
sound.
Low Distortion 16-cm
Long Stroke Woofer
Technics has
developed a long-throw woofer capable of reproducing super-low frequencies with
dramatically reduced distortion, giving powerful, dynamic and responsive bass.
A push-pull edge (Symmetrical Surround Technology, SST) design cancels
secondary harmonic distortion in the low-frequency range.
1 - Flat coaxial
2-way speaker unit
The newly developed
flat coaxial two way speaker unit features a dome tweeter capable of
reproducing frequencies of up to 100 kHz, which incorporates a rigid and
lightweight carbon graphite diaphragm. In addition, the speaker unit features a
flat midrange diaphragm that eliminates the frequency characteristic
disturbance due to the cavity effect caused by the cone diaphragm. The result
is a point sound source that achieves superb sound localisation and provides
smooth directional characteristics over the entire frequency range without
peaks or dips.
2 - Low distortion
long stroke woofer
The woofer offers
low distortion and superb response in reproducing frequencies even with large
amplitude, delivering bass sound with a wide dynamic range.
3 - High rigidity
round form cabinet
Designed to
eliminate unwanted vibration, diffraction reflection, and standing waves, the
cabinet allows the reproduction of faithful and rich sound ambience.
[A]
Woofer 160 mm (for all 4 woofers)
Woofer 160 mm (for all 4 woofers)
Two layered cone and
dust cap unified diaphragm
Low distortion SST
(Symmetrical Surround Technology) edge
Opposed double
damper
Low distortion
magnetic circuit
[B]
Phase Precision Driver
Phase Precision Driver
Carbon Graphite dome
diaphragm for up to 100khz Ultra-Wide range reproduction
Low distortion
magnetic circuit
Three layered
aluminium core flat diaphragm
Specifications
Type: 3,5-way 6 speakers, bass-reflex type (coaxial
2-way midrange/built-in tweeters)
Speaker Unit
Woofer : 16 cm (6-1/2") cone type x 4
Midrange/Tweeter
: Coaxial 16 cm (6-1/2") flat type
x 1 / 2.5 cm (1") dome type x 1
Impedance: 4 Ω
Input Power
(IEC): 300 W (MAX); 150 W (RATED)
Sound Pressure
Level: 88 dB (2.83 V/m): 85 dB (W/m)
Frequency
Range: 20 Hz to 100 kHz (-16 dB); 28 Hz to 90 kHz (-10 dB)
Crossover
Frequency: 300 Hz, 3 kHz
Dimensions (W x H x
D): 408 x 1260 x 522 mm (16-1/16"
x 49-19/32" x 20-9/16")
Weight: 72 kg (159 lbs)