Luxman 20C43 (circa 1963)
The Luxman 20C43 is a 3-way, 3-speaker floor-standing speaker system from the early 1960s. It is an all-cone design priced at ¥13,000 per unit. The record on this model is thin. No production years, reception notes or market history have surfaced. What is documented is a solid set of specifications and a clear picture of how it was built.
It used a 20 cm cone woofer for the low band, a 10 cm cone squawker for the midrange and a 5 cm cone tweeter for the highs. All cones, nothing fancy. The crossover points were 800 Hz and 5 kHz, with a 6 dB/octave slope. Rated frequency response was 60 Hz to 17 kHz, and it reached down to 30 Hz when paired with an MFB (motional feedback) amplifier. Maximum allowable input was 10W, impedance was 16 Ω, and the internal enclosure volume was 40 liters.
The 20C43 measured 360 mm wide by 660 mm high by 250 mm deep (680 mm tall with legs) and weighed 14.7 kg. That is about all the archive has on this one. If you own a pair or have heard them, the record would benefit from your notes.
Known specifications
- Type: 3-way, 3-speaker floor-standing, all-cone
- Woofer: 20 cm cone; Midrange: 10 cm cone; Tweeter: 5 cm cone
- Frequency response: 60 Hz – 17 kHz (30 Hz – 17 kHz with MFB amplifier)
- Crossover: 800 Hz, 5 kHz, 6 dB/oct.
- Maximum input: 10W
- Impedance: 16 Ω
- Internal volume: 40 liters
- Dimensions: 360 × 660 × 250 mm (H 680 mm with legs)
- Weight: 14.7 kg
- Original price: ¥13,000 (1 unit, circa 1963)
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