Aurex SS-415W
¥ 78,000 (a set of two cars, around 1975)
Commentary
A bookshelf type speaker system that employs radial edges and concave diaphragms.
A 25 cm cone woofer with a concave diaphragm is installed in the low range.
The diaphragm is of the concave type with a concave center cap. By using the center cap itself as part of the diaphragm, the expansion near the crossover is minimized and the extreme resonance peak is reduced to obtain simple characteristics.
In addition, a unique radial edge is adopted for the edge, and by adopting an Ω shape with two types of curves with different radii of curvature, division vibration at the edge is suppressed.
The middle area is equipped with a 10 cm cone type squaker using a concave diaphragm.
A 3-cm dome type tweeter with an edge support structure is installed in the high range.
Equipped with 3-step switching type level control for mid-range.
The enclosure uses a pressure balance system.
The pressure balance system is close to hermetic, and is designed to balance the internal pressure by allowing only unwanted vibrations outside the audible band to escape from the baffle port, thereby reducing the hermetic enclosure and the bus-ref-type boumey.
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Model Rating
| Method | 3-way, 3-speaker pressure balance system ・ Bookshelf type |
| Speaker used | For low band : 25 cm cone type For Medium Range : 10 cm Cone Type For High Pass : 3 cm Dome Type |
| Frequency characteristic | 25 Hz to 20 kHz |
| Lowest resonance frequency | 63Hz |
| Max Input | 50W |
| Rated input | 25W |
| Impedance | 8 Ω |
| Output sound pressure level | 90dB/W/m |
| Crossover frequency | 1.5 kHz, 7 kHz |
| Level control | Mid-range 3-step switching |
| Internal volume | 37L |
| External dimensions | Width 320x Height 540x Depth 310 mm |
| Weight | 13kg |