SANSUI SP-2002
¥ 29,500 (1 unit, around 1969)
Commentary
A speaker system developed with an emphasis on musical performance, especially in the mid-range.
A 30 cm cone type woofer is installed in the low range.
This unit uses a magnetic circuit with a magnetic flux density of 12,000 gauss, and is designed to withstand large amplitudes with a wide voice coil diameter, winding width and yoke.
The mid-range is equipped with a 16 cm cone type squaker and a 12 cm cone type squaker, and is an acoustic staggering system.
This method prevents resonance, which occurs when a unit of the same diameter is used, and provides an honest sound.
Two 2.5 cm dome type tweeters are installed in the high range.
This unit is made lighter and harder by adopting a light metal diaphragm, and is equipped with a strong magnetic circuit using a large ferrite magnet to overcome low efficiency, which is a weak point of the dome type.
The network coil uses a 12dB/oct-type that takes advantage of Sansui's transformer technology. It uses a tap-down method that changes the level by switching the tap. As a result, there is no degradation of damping characteristics caused by resistance type attenuators.
In addition, the ferrite core is used for the coil to compensate for the lack of inductance and to improve the transient characteristics by reducing DC resistance to 0.1 Ω or less (resistance type 20 to 30 Ω).
The attenuator is installed in each of the mid-range and high-range independently, and 3-position switching is possible in 3 dB steps.
Equipped with a multi-amplifier terminal, 2-way and 3-way multi-amplifier playback is possible.
The enclosure adopts a bass reflex system using a pipe duct. In addition, the duct is dumped with a sound absorbing material. A special sound absorbing material of 15 mm thickness is used to prevent standing waves in the enclosure.
The enclosure is made of a 25 mm thick chip board.
The exterior has a walnut finish, and the front is equipped with handmade kumiko.
Model Rating
| Method | 3-Way, 5-Speaker, Bass Reflex System, Bookshelf Type |
| Unit | For low band : 30 cm cone type For Medium Range : 16 cm cone type 12 cm cone mold For High Pass : 2.5 cm Dome x2 |
| Maximum allowable input | 50W |
| Impedance | 8 Ω |
| Frequency characteristic | 35 Hz to 20 kHz (in anechoic room) |
| Sound pressure level | 100dB |
| Crossover frequency | 600 Hz, 5 kHz |
| Network | 12dB/oct, parallel type |
| External dimensions | Width 381x Height 650x Depth 323 mm |
| Weight | 21kg |