Aiwa X-1000
Those same listings give the full specification and the price.
Each earcup held a 2 1/4-inch dome driver with an amorphous-diamond laminated diaphragm, reinforced with glass fiber. The headphone weighed 2.8 ounces (about 80 grams), had an impedance of 50 ohms, and was rated for a maximum input power of 100 mW. Sensitivity was 100 dB SPL per watt at 1 meter, with a frequency response of 20-24,000 Hz. The price in 1992 was $59.
Beyond these magazine listings, little documentation survives.
- Type: Over‑ear headphones
- Driver: Two 2 1/4‑inch dome, amorphous‑diamond laminated diaphragm (glass‑fiber reinforced plastic)
- Impedance: 50 ohms
- Frequency response: 20–24,000 Hz
- Sensitivity: 100 dB SPL at 1 W / 1 m
- Maximum input power: 100 mW
- Weight: 2.8 oz (approx. 80 g)
- Original price: $59 (1992)
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