Technics SB-202 (c. 1974)
Not much is documented about the Technics SB-202. The catalog record that survives describes a 1970s bookshelf speaker: a 3-way, 3-speaker airtight (sealed) system priced at ¥29,800 per unit around 1974. The drivers were a 25 cm cone woofer with a long-travel voice coil, a 12 cm cone midrange, and a 6.5 cm cone tweeter with a low resonance frequency (fo) of 1 kHz. That is an unusually low crossover point for a small cone tweeter of the period.
Rated frequency response was 40 Hz to 20 kHz. Impedance was 8 Ω, output sound pressure level 90 dB/W/m, and max input 40 W. The cabinet measured 320 × 550 × 248 mm and weighed 11 kg.
Past that, the record is thin. The SB-202 shows up in a Russian catalog list of Technics acoustic systems from Matsushita Electric Industrial Co., next to the SB-201, SB-301, SB-400, SB-440 and SB-500. No production dates, family hierarchy, or period reviews have surfaced.
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