DENON SC-903V
¥ 39,800 (1 unit, around 1985)
Commentary
The SC 907 / SC 905 technology has been put into this speaker system, which is compatible with AV while seeking excellent reproduction capability.
In order to make it an anti-magnetic type, a canceling sub-magnet and an anti-magnetic cap effectively block leakage magnetic flux and improve magnetic flux density.
A 22 cm cone woofer with a PCM diaphragm is installed in the low range.
This diaphragm is based on polypropylene, which has properties comparable to those of paper, and is a special mixture of carbon graphite and mica. It is 2.5 times more rigid than conventional woofer diaphragms and 9 times more rigid than paper cone diaphragms.
A 4.3 cm hard dome type skoker is mounted in the middle area.
Both sides of the diaphragm are specially treated hard light alloy, and linearity is greatly improved by direct radiation structure and push-pull double suspension.
A 1.6 cm hard dome type tweeter with α -Boron diaphragm is mounted in the high range.
This diaphragm is composed of an aluminum substrate and a filler (boron compound and alumina), and achieves approximately three times the rigidity of titanium.
The network is separated for low, middle and high frequencies to reduce distortion caused by interference between circuits.
The enclosure uses a softwood hard particle board.
Model Rating
| Method | 3-way, 3-speaker, bass reflex system, bookshelf type, magnetic protection design |
| Units Used | For low band : 22 cm cone type For Middle Area : 4.3 cm Dome Type For high-pass : 1.6 cm dome type |
| Frequency characteristic | 35 Hz to 65 kHz |
| Impedance | 6 Ω |
| Maximum allowable input | 110W (program source) |
| Mean output sound pressure | 92dB/W/m |
| Crossover frequency | 1500 Hz, 8000 Hz |
| External dimensions | Width 297x Height 525x Depth 252 mm |
| Weight | 12.0kg |