Marantz LS-60GX (circa 1989)
Not much about the Marantz LS-60GX made it into English-language sources. The record shows a late-1980s bookshelf speaker that appears to have been designed mainly for the Japanese domestic market, where it was priced at ¥55,200 for a pair. It was a three-way, three-driver sealed (airtight) design with anti-magnetic shielding. That made it a speaker you could set next to a television in a Japanese audio-video setup of the period.
As far as the record goes, the brief was rigidity. The enclosure used a 20mm MDF front baffle with 25mm high-density chipboard on the sides and back, reinforced internally for stiffness. The woofer was a shielded 23cm cone unit with a bonded carbon fiber cloth, mounted in an aluminum die-cast frame secured with eight screws. It was driven by a double-magnet magnetic circuit with a high heat-resistant, large-diameter long voice coil. The tweeter was a damperless 3cm semi-dome made of polyetherimide. Above it sat a 1.5cm dome super-tweeter using a unimorph element, an unusual piezoelectric-derived approach for the top octave.
Specifications as recorded:
- Type: 3-way, 3-speaker, airtight (sealed) bookshelf, anti-magnetic
- Impedance: 6 Ω
- Frequency range: 40 Hz – 30,000 Hz
- Maximum input: 150W
- Output sound pressure level: 90 dB/W/m
- Crossover frequencies: 3.5 kHz, 10 kHz
- Dimensions: 276 × 498 × 272 mm (W×H×D)
- Weight: 12 kg
No production run dates, market positioning or contemporary review commentary have surfaced. The Japanese audio database audio-heritage.jp places the price at "around 1989," while a Russian vintage audio site lists the year as 1990. The record is thin on chronology. No owner reception, common failure modes or current market values are documented in the available sources.
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