Technics SB-107 (c. 1969)
Little is documented about the Technics SB-107. The record shows a 3-way, 3-driver sealed ("airtight") bookshelf speaker, listed in Japan at ¥39,800 per unit. The source dates it only as "around 1969?", so treat that year as approximate. It looks like an early Technics-era design, and the surviving documentation is essentially one spec sheet.
The drivers are the interesting part. There's a 25 cm cone woofer for the lows, a 12 cm cone midrange (the Japanese database spells it "squaker"), and a horn-type tweeter for the highs. The mid and high bands each get a 3-step switching level control. The sealed enclosure and relatively high 96 dB/W output sensitivity suggest a design aimed at modest amplifiers of the late '60s. No period reviews or owner reports have surfaced, so how it actually sounded is unconfirmed.
Known specifications:
- Type: 3-way, 3-speaker, airtight (sealed) bookshelf system
- Drivers: 25 cm cone woofer / 12 cm cone midrange ("squaker") / horn tweeter
- Frequency range: 28 Hz – 21 kHz
- Impedance: 8 Ω; output SPL: 96 dB/W; allowable input: 60W
- Crossover frequencies: 800 Hz and 6 kHz
- Mid/high level control: 3-step switching type
- Dimensions: 336 × 600 × 300 mm; weight: 14.5 kg
- Original price: ¥39,800 (one unit, c. 1969 — approximate)
Beyond the spec sheet, the trail goes cold. No production years, cabinet construction details, or lineup positioning are recorded, and nothing independent backs up the Japanese database entry. The only field report found is a German classified listing for a pair, where the seller stated the speakers "work flawlessly".
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