Technics SB-1770 (c. 1978)
Not much is documented about the Technics SB-1770. What the record shows is a 3-way, 3-speaker bookshelf-type system sold around 1978 at ¥41,800 per unit. Nobody recorded how long it stayed in production.
The drivers are a 30cm cone woofer for the lows, a 10cm cone midrange, and a 6cm cone tweeter. It is an 8Ω design rated at 92 dB/W/m output sound pressure level and 60W maximum input. With the grille fitted, the cabinet measured 420 × 725 × 441 mm and weighed 22.0kg. That is heavy for something called a bookshelf type.
No period reviews, production dates, family relationships, or owner reports have surfaced in the sources examined. The SB-1770 appears to be one of those late-'70s Technics speakers that left a spec-sheet footprint but almost no paper trail beyond it.
Known specifications:
- Type: 3-way, 3-speaker bookshelf system
- Drivers: 30cm cone woofer, 10cm cone midrange, 6cm cone tweeter
- Impedance: 8Ω
- Output sound pressure level: 92 dB/W/m
- Maximum input: 60W
- Dimensions: 420 × 725 × 441 mm (with net); weight: 22.0kg
- Original price: ¥41,800 (one unit, c. 1978)
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