Altec 602A (1952)

A 15-inch coaxial duplex speaker developed in 1952, with an 8Ω impedance and a cellular-horn tweeter.

Overview

Altec developed the 602A in 1952. It is a coaxial duplex speaker with a 15-inch woofer and a high-frequency driver in one unit, built for full-range reproduction. It goes by several names, including "Altec 602A Duplex" and "15-Inch Coaxial Duplex." It was described as a full-range unit that handles 30 Hz to 22,000 Hz.

Specifications

Driver size	15-Inch
Tweeter type	3000H Tweeter
Configuration	coaxial
Impedance	8Ω
Crossover frequency	3000
Frequency range	30-22000 Hz

Market

As of October 23, 2025, one unit was listed for $340.00 in excellent, working condition. A 2012 listing showed a price of $400, so the value may have held up over time. Some sources mention spare parts, including replacement cones. One listing noted a minor flaw: "a small tear."