SONY SS-A7 La Voce
¥ 198,000 (1 unit, released in 1991)
Commentary
The top speaker system in the La Voce series, named "Voice of People" in Italian.
It is designed with the aim of reproducing the fresh and natural sound of classical music and jazz with a rich sense of presence.
A 20 cm cone type woofer is installed in the low range.
Two 2.5 cm dome type tweeters are used in parallel for the high frequency band, and a 2.0 cm dome type super tweeter is installed for the ultra high frequency band.
The vibration plate of the tweeter is made of bio-cellulose, a fiber produced by bacteria called Acetobacter. It is very thin (more than 10 microns). It is light but has a very thin fiber structure of about 1/1000 of paper. The sound propagation speed is about 3 times that of paper. It has the same sound velocity as aluminum. The resonance sharpness is also about 24, about 1/10 of that of aluminum. It is almost equivalent to that of paper.
In order to transmit the sound waves of each unit to the ear simultaneously, time alignment is adopted to adjust the position of each unit and the time difference of sound is adjusted.
By adjusting the time difference between sound sources, a more realistic sound image and a natural sound field can be realized.
The enclosure is made of natural real wood to provide a natural sound.
There was a special speaker stand sold separately.
Model Rating
| Method | 3-way, 3-speaker, bass reflex system, bookshelf type, magnetic protection design |
| Unit | For low band : 20 cm cone type For High Pass : 2.5 cm Dome x2 For Super High Range : 2.0 cm Dome Type |
| Playback frequency band | 30 Hz to 30000 Hz |
| Output sound pressure level | 86dB/W/m |
| Impedance | 6 Ω |
| Rated maximum input | 60W |
| Instantaneous maximum input | 180W |
| External dimensions | Width 315x Height 710x Depth 332 mm |
| Weight | 24kg |
| Sold separately : Speaker Stand WS-A5 (2-unit set, ¥ 35,000) | |
| External dimensions | Width 310x Height 250x Depth 285 mm |
| Weight | 2.3kg |