description Altec Lansing 604 Duplex Overview
The Altec Lansing 604 Duplex is a professional studio monitor speaker produced in 1943. It features a coaxial design with two horn drivers and an electrostatic element, creating a bright and articulate sound favored by recording engineers and audio professionals seeking accurate frequency response. Its vintage analog construction makes it particularly relevant for restoration projects and those valuing classic audio technology.
help Altec Lansing 604 Duplex FAQ
What makes the Altec Lansing 604 Duplex speaker so unique?
Introduced in 1963, this vintage high-fidelity speaker utilizes a unique coaxial design featuring twin horn drivers alongside an electrostatic element. This dual-driver configuration creates a distinctive, highly articulate, and bright sound reproduction that is still sought after by audiophiles.
What size is the woofer on the Altec Lansing 604 Duplex?
The Duplex series is renowned for utilizing a large 15-inch bass driver paired with a high-frequency compression driver. This massive woofer allows the speaker to produce incredibly deep and dynamic bass for an analog speaker.
Do I need a special crossover for vintage Altec Lansing 604 speakers?
Yes, these speakers typically require an external crossover network, often referred to as a dividing network, to direct frequencies to the correct drivers. Many modern users employ updated crossovers from companies like Mastering Labs to improve the sound staging.
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