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.