Altec Lansing 604-8G (1975)
A 2-way 38 cm coaxial speaker unit released in 1975 with a frequency response from 20 Hz to 22 kHz and an output sound pressure level of 103dB/W/m.
Overview
The Altec Lansing 604-8G is a 2-way 38 cm coaxial speaker unit introduced in 1975. It combines a 38 cm cone-type woofer for low-frequency reproduction with a high-frequency horn driver using a multi-seller horn. Designed for high-fidelity audio applications, the unit delivers a wide frequency range from 20 Hz to 22 kHz and features an 8 Ω impedance with a 40W power handling capacity. The speaker was marketed as part of "Custom Fine Furniture Grade Cabinets," though the original box and manual are not included with units today.
Specifications
| Type | 2-way 38 cm coaxial speaker unit |
| Units Used | For low band : 38 cm cone type; For High Frequency : Horn Type |
| Frequency characteristic | 20 Hz to 22 kHz |
| Lowest resonance frequency | 30Hz |
| Impedance | 8 Ω |
| Allowable input | 40W |
| Output sound pressure level | 103dB/W/m (New JIS) |
| Voice Coil Diameter | Low : 75 mm; High-pass : 45 mm |
| Crossover frequency | 1.5kHz |
| Weight | 15.4kg |
Design
The 604-8G is a coaxial speaker unit that integrates a 38 cm cone-type woofer with a high-frequency horn driver using a multi-seller horn. Transient response is improved through reduced vibration mass in the diaphragm, while dynamic linearity and margin are enhanced in this series.
Market
The Altec Lansing 604-8G was originally priced at ¥157,700 per unit around 1976. It is sold without the original box or manual. The speaker is intended for installation in custom fine furniture-grade cabinets, suggesting a focus on both performance and aesthetic integration.
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