Technics SB-500
¥ 34,800 (1 unit, around 1971)
Commentary
A speaker system that uses a dome unit.
A 30 cm cone type woofer is installed in the low range.
This unit uses soft urethane foam for the edge and has a high compliance design with a convex shape to improve linearity. In addition, a large 140 φ magnet is used for the magnetic circuit.
A 15 cm dome type skoker is installed in the middle area.
This unit was designed for the Dome Series (SB 500, SB 700). The diaphragm is made of corrosion-resistant aluminum alloy with high rigidity and light mass.
In addition, a 10-cm dome type tweeter using an aluminum alloy diaphragm is mounted in the high range as in the Skoker.
The mid-range and high-range are equipped with attenuators.
This attenuator is designed to be OFF when used in a multi-amplifier so that it can be used in a state of 0 insertion impedance.
The enclosure is sealed and the exterior is oil-finished with Oceania cheeks.
The input terminal on the back can be used in 2-way or 3-way multi-amplifier system depending on the switch.
Model Rating
Method | 3-Way, 3-Speaker, Airtight Type, Bookshelf Type |
Units Used | For Low Range : 30 cm Cone Type (EAS-30PL08) For Middle Area : 15 cm Dome Type (EAS-15KM02S) For High Range : 10 cm Dome Type (EAS-10KH02S) |
Playback frequency band | 30 Hz to 20 kHz |
Maximum allowable input | 45W |
Impedance | 8 Ω |
Output sound pressure level | 94dB/W/m (old standard : 100dB/W/1kHz/50cm) |
Crossover frequency | 600 Hz, 5 kHz (12dB/oct.) |
Level control | For Middle Range : + 3 ~ 0 ~ -3dB (Equipped with OFF Switch) For High Frequency : + 3 ~ 0 ~ -3dB (with OFF switch) |
External dimensions | Width 380x Height 660x Depth 297 mm |
Weight | 19kg |
Pre-Main Amplifier SU-3400, FM/AM Tuner ST-3400, Player SL-40
Tape Deck RS-732U, Speaker SB-500