Altec 802D (1957–1972)

A high-frequency compression driver built for clarity and durability in demanding audio systems.

Overview

The Altec 802D is a compression driver manufactured by Altec Lansing from 1957 to 1972. Designed primarily for use with 511 and 811 type sectoral horns, it served as a key high-frequency component in two-way high-fidelity systems. Though intended for large spaces with high ambient noise, the 802D was frequently used in commercial loudspeakers meant for home listening, such as the Altec 832A. It shares a nearly identical design with the Altec 804A, differing mainly in magnet size and strength.

Specifications

Magnet	1.2 lbs., 15,250 Gauss
Frequency Response	500Hz to 22,000Hz
Diaphragm	2¼" diameter aluminum diaphragm
Impedance	16 ohms

Design

The 802D uses a 2¼" aluminum diaphragm and is functionally equivalent to the 804A, with the primary distinction being its smaller, less powerful magnet. It was engineered to work optimally with 511 and 811 sectoral horns, contributing to a smooth, natural high-frequency response in professional and home audio applications.

Context

Originally intended for high-noise environments, the 802D became a staple in Altec’s lineup and found widespread use in home audio systems. Its pairing with the 511B horn is particularly notable, and the driver remains a favorite in vintage speaker restorations and high-end retro builds.

Market

Vintage 802D drivers are highly collectible, rated 8/10 on the vintage audio scale. Rebuilt pairs have sold for $1,450 USD as recently as 2025. Common issues include rust in the magnetic gap and stuck diaphragms, with repairs often involving replacement diaphragms from original or Great Plains Audio sources.