Luxman 30H112 (1962)

The Luxman 30H112 is a three-way, three-driver bookshelf speaker system released in September 1962 at ¥36,000 per unit. Documentation on this model is thin. No independent reviews, no production totals, and no official sensitivity rating survive. What the record shows comes down to a Japanese spec sheet and a handful of Russian classified listings.

The 30H112 is an airtight (sealed) enclosure with an internal volume of 110 liters. It measures 520 × 850 × 380 mm and weighs 31 kg. A 30 cm cone woofer with a paper surround handles the low end. The midrange and treble are both horn-loaded - a compression driver feeding a horn for the mids (model SH-35) and a horn tweeter (model TH-7) up top. The crossover points are 600 Hz and 3.5 kHz, at 12 dB/octave. The unit configuration is identical to the Luxman 20H42 except for the woofer.

Rated frequency response is 40 Hz to 17 kHz, maximum input is 20W, and impedance is 16 Ω. All drivers use cobalt magnets, per the Russian seller listings. The same listings say the drivers and crossovers were found in untouched condition with capacitors measuring fine. The pair offered in Russia around 2022 was described as the only one in the country, with wiring replaced by Belden 9497 and new terminals installed. A Vietnamese YouTube channel has also featured the 30H112, calling it a rare survivor in that market.

• Type: 3-way, 3-speaker, airtight bookshelf
• Woofer: 30 cm cone, paper surround
• Midrange: Horn type (SH-35)
• Tweeter: Horn type (TH-7)
• Frequency response: 40 Hz – 17 kHz
• Max input: 20W
• Impedance: 16 Ω
• Crossover: 600 Hz, 3.5 kHz, 12 dB/oct.
• Dimensions: 520 × 850 × 380 mm
• Weight: 31 kg
• Internal volume: 110 L
• Price (1962): ¥36,000 per unit

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