YAMAHA AST-S1
¥ 73,000 (a set of two cars, around 1989)
Commentary
This is a small A4-size speaker system that uses active servo technology to provide bass playback from the port.
Although it is an air woofer with a 3.6 cm diameter port, the air in the enclosure itself is vibrated. The air itself functions as a diaphragm and realizes low sound reproduction from 28 Hz.
It uses a 16 cm PP cone type squaker for the mid-range and a 3 cm soft dome type tweeter for the high-range.
A dedicated amplifier is required for use.
Model Rating
| Method | 3-way, 2-Speaker, AST System, Bookshelf Type, Anti-magnetic Design |
| Units Used | For Medium Range : 16 cm cone type For High Pass : 3 cm Dome Type |
| Woofer part | Port Diameter : 3.6 cm |
| Playback frequency band | 28 Hz to 20000 Hz |
| Maximum output sound pressure level | 112 dB / SPL/1kHz (with AST-A10) |
| Internal volume | 6L |
| External dimensions | Width 188x Height 297x Depth 230 mm |
| Weight | 6.0kg |
| Attachment | Dedicated cartridge Speaker cord (4mx2) |
| Sold Separately | Speaker Stand SPS-T1 (2 Set, ¥ 18,000) |