Kenwood LS-707 (Year Unknown)

Documentation on the LS-707 is thin, and even the name is slippery. Most sources call it the Kenwood LS-707M, while a Russian listing calls it the TRIO (Kenwood) LS-707, which reflects Kenwood's domestic Japanese branding. No production years or original pricing have surfaced. Nearly all the specs come from a single, partially garbled classified ad.

The driver complement is reasonably well established: a 3-way, 4-driver layout with two 6½" woofers, a 2" midrange, and a 1" titanium tweeter. A DIY audio forum owner described the configuration in exactly those terms. The same owner reported that the speakers sounded muddy with a modest 30W+30W Sony amplifier but "sound good" with a 125W+125W RMS amp. These floorstanders seem to want real power behind them.

A beatles.ru listing (dated February 2014, priced at 62,000 rubles) adds more specs, though the page suffered from character-encoding corruption, so some values are uncertain. It gives a frequency range of 25 Hz - 20 kHz, 100W nominal power handling, 8Ω impedance, 93 dB/W/m sensitivity, and crossover points at 1.3 kHz and 6.5 kHz. The same listing gives dimensions of 440×910×404 mm and a weight of 43 kg. It also mentions optional custom oak stands with adjustable cone spikes for an additional 10,000 rubles.

One Klipsch Community forum member, writing about their pair, found that mounting them on spikes tightened up the bass considerably. They called it "fairly neat and trimmed" with "better definition" compared to the previously "muddy" low end, and felt the midrange gained separation as a result. The beatles.ru seller noted the speakers had been in storage and "require updating" after years in a garage.

Beyond that, the record is largely silent. There are no crossover component details, no cabinet construction information, no original brochure data, and no second source for most specifications. The known essentials are 3-way, four drivers (dual 6½" woofers, 2" mid, 1" titanium tweeter), made in Japan, and best fed with a solid amplifier.

• Type: 3-way, 4-driver floorstanding speaker
• Drivers: 2 × 6½" woofer, 2" midrange, 1" titanium tweeter
• Impedance: 8Ω (single source)
• Sensitivity: 93 dB/W/m (single source)
• Frequency range: 25 Hz – 20 kHz (single source)
• Crossover: 1.3 kHz / 6.5 kHz (single source)
• Dimensions: 440 × 910 × 404 mm (single source)
• Weight: 43 kg (single source)

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