Marantz LS-65 (circa 1986)
Not much is documented about the Marantz LS-65 beyond its Japanese-market catalog entries.
The LS-65 has a full-scale anti-magnetic (shielded) construction for use near video displays. A double magnet shield system eliminates magnetic flux leakage, which was a practical feature for the AV-oriented buyer of the mid-1980s. The drivers were advanced for the era: a 20 cm cone woofer with a strontium ferrite magnet, a 10 cm midrange with a hybrid CFRP cone/titanium nitride dome structure, and a 2.5 cm titanium nitride dome tweeter. The enclosure is a rear duct bass reflex with a round baffle to reduce diffraction. The crossover network wiring uses crimped connections rather than solder. Marantz also stated that FFT impulse analysis was used in driver development to improve response and phase characteristics.
The frequency band is rated from 35 Hz to 50 kHz. Maximum input is 150W, output sound pressure level is 90 dB/W/m, and impedance is 6Ω. Crossovers are set at 1 kHz and 5 kHz. Each cabinet measures 270 × 515 × 215 mm (W×H×D) and weighs 10.7 kg.
No period reviews, owner commentary or production run details have surfaced, and nothing beyond the Japanese audio databases corroborates the specs. What is known comes from the manufacturer's own published specifications.
Known Specifications
- Type: 3-way, 3-speaker, bass reflex, bookshelf, magnetically shielded
- Drivers: 20 cm cone woofer, 10 cm cone midrange, 2.5 cm dome tweeter
- Impedance: 6Ω
- Playback frequency band: 35 Hz – 50 kHz
- Max input: 150W
- Output sound pressure level: 90 dB/W/m
- Crossover frequencies: 1 kHz, 5 kHz
- Dimensions: 270 × 515 × 215 mm (W×H×D)
- Weight: 10.7 kg
- Original price: ¥42,800 (1 unit, circa 1986)
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