SANSUI SP-V100

Commentary

Under the theme of improving instantaneous response, this is a bookshelf speaker system that uses bicrystal vibrating plates.

Bicrystal diaphragm is used for woofer and mid-range diaphragm.
This material combines two materials, polypropylene and crystalline mica. Polypropylene, which has an excellent internal loss but is difficult to increase in rigidity, is mixed with crystalline mica, which has excellent physical properties such as sufficient rigidity, and it is molded into a vibration plate. Microscopically, the crystal structure is such that the polypropylene crystal and the mica crystal overlap each other. The synergistic effect of the two crystals realizes excellent material properties that cannot be obtained with a single material.
This bicrystal diaphragm has two to three times higher rigidity than paper or polypropylene (olefin), and two times higher internal loss (tan δ) than paper. In addition, the sound speed is 10 to 20% faster than other non-metal polymer materials, and the mass is the same as polypropylene. As a result, in addition to wide and flat response and power linearity, this bicrystal diaphragm has excellent transient response characteristics and improved instantaneous response.

A 27 cm cone type woofer is installed in the low range.
In this woofer, in order to bring out the physical properties of bicrystal more effectively, a unique micro-corrugation is applied to the cone to ensure more effective rigidity, thereby suppressing the squeal phenomenon generated from the material.
We also carefully examine the sound quality of the damper and use a high-speed damper with excellent dynamic characteristics.
A large strontium ferrite magnet with a magnetic flux density of 10,500 gauss is used for the magnetic circuit, and distortion is greatly reduced by the adoption of a T-pole.
Aluminum die-cast frame is used for the frame.

The mid-range has a 13 cm cone type mid-range.
Bicrystal diaphragm is used for the diaphragm, and ferrite magnet with magnetic flux density of 12,000 gauss and T-pole are used for the magnetic circuit.
Aluminum die cast is used for the frame, and it is firmly fixed to the baffle plate.

A 2.5 cm hard-domed tweeter is installed in the high range.
A newly developed 3-layer structure vapor deposition diaphragm using chromium sputtering is used for the diaphragm, achieving high rigidity and low mass.
It also uses a magnetic circuit using a magnet with a magnetic flux density of 15,000 gauss.

An orthodox parallel 12dB/oct network is used for the network section.
This circuit pays attention to the effect of wires on sound quality, and uses materials that have been carefully examined for sound quality, such as oxygen-free copper for mid-range and tweeter inductance.

It is equipped with level control for middle and high range.

The enclosure uses a bass reflex system.
The front and rear baffles are equipped with 20 mm thick high-density acoustic boards, the other boards are also equipped with high-density acoustic boards, and each part is reinforced to achieve high rigidity.
The symmetrical arrangement of the left and right speaker units improves sound image localization.

Model Rating

Method	3-Way, 3-Speaker, Bass reflex system, Bookshelf Type
Units Used	For low band : 27 cm cone type For Middle Band : 13 cm Cone Type For High Band : 2.5 cm Cone Type
Max Input	120W
Impedance	8 Ω
Output sound pressure level	91dB/W/m
Frequency characteristic	30 Hz to 35 kHz
Crossover frequency	800 Hz, 5 kHz
Internal volume	43.5 liters
External dimensions	Width 335x Height 600x Depth 325 mm
Weight	18.1kg