Technics SB-1970 (c. 1979)
Surviving information on the Technics SB-1970 is thin, but the period record pins down a few real facts. It was a 3-way, 3-speaker bass reflex system in a floor-standing cabinet, sold around 1979 at ¥25,800 for a single unit. The drivers were a 25 cm cone woofer for the low band, a 12 cm cone midrange, and a horn tweeter. That was a conventional layout for a Japanese floorstander of the time.
The known specs are decent for an obscure model. Impedance is 8 Ω, output sound pressure level is 91 dB/W/m, and allowable input is 60W DIN RMS (90W music). Each cabinet measured 390 × 803 × 339 mm and weighed 17.5 kg including the packing net. Beyond that the record goes quiet. No production years, frequency response figures, crossover details, finish options, or period reviews have surfaced in the sources examined.
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