Technics SB-1850 (c. 1978)
The Technics SB-1850 is a 3-way, 3-driver bass reflex floor-standing speaker system, listed at ¥30,300 per unit around 1978. The documentation is thin. No production years, no frequency response figures, no crossover points and no driver sizes have surfaced. The specs that are recorded still describe a serious, mid-to-late 1970s Japanese floorstander.
The main engineering claim attached to this model is linear phase design, a technology Technics was pushing in this era to align driver arrival times. The driver complement is only partly documented. The low band uses a cone, the midrange uses a cone, and the high-frequency driver type is unrecorded. The system is rated at 91.0 dB/W/m output sound pressure level with a maximum input of 60W (90W music). Each enclosure measures 390 × 803 × 332 mm and weighs 17.5 kg. That is a big cabinet for the price.
What's known, in short:
- Type: 3-way, 3-speaker bass reflex, floor type
- Drivers: cone woofer, cone midrange; tweeter type not documented
- Output sound pressure level: 91.0 dB/W/m
- Max input: 60W (90W music)
- Dimensions: 390 × 803 × 332 mm; weight 17.5 kg
- Original price: ¥30,300 per unit (c. 1978)
Beyond that, the record goes quiet. No period reviews, receiver power recommendations or collector-market data have been found. Whether the linear-phase claim gives it a distinctive sound is something only an owner in the field could tell you.
eBay Listings
As an eBay Partner, we earn from qualifying purchases. This helps support our independent vintage technology research.