SONICS AS-281

Commentary

This speaker system was developed based on the technology used in overseas brands.

A 26.5 cm cone type woofer is installed in the low range.
High compliance design is applied in order to obtain acoustic suspension completely, compliance is taken large, and roll edge obtained by special molding of rough cloth on the edge is adopted in order to absorb rolling distortion and amplitude distortion of voice coil.
The cone paper uses a non-pressed cone made mainly from pulp, which has excellent physical properties. It has an appropriate internal loss and toughness. In addition, the voice coil uses aluminum to improve the input resistance.

Equipped with 5.2 cm soft dome type skoker in the middle area.
In order to maintain the stability of quality at the time of processing and to eliminate dispersion, a soft dome obtained by impregnating cloth with a special damping agent is adopted for the diaphragm.

A 2.63 cm soft dome type tweeter is installed in the high range.
The diaphragm uses a specially dumped soft dome with a constant impregnation rate similar to the mid-range.

An LC-type network is used in the network section, the best crossover point selected by hearing is taken, and the distortion due to the network is removed by using ferrite core.

An independent continuously variable level control has been adopted for the middle and high areas on the side.

All 6 sides of the enclosure are made of homogen, and the built-in type is adopted for reinforcement.
The exterior is designed to make use of the wood grain.

Model Rating

Type	3-Way, 3-Speaker, Airtight Type, Bookshelf Type
Units Used	For low band : 26.5 cm cone type For Middle Area : 5.2 cm Dome Type For high-pass : 2.63 cm dome type
Frequency characteristic	30 Hz to 20 kHz
Max Input	60W
Impedance	8 Ω
Output sound pressure level	90dB/W (New JIS)
Crossover frequency	500 Hz, 4 kHz
External dimensions	Width 326x Height 578x Depth 295 mm
Weight	18kg