AI-generated product photo — not official manufacturer imagery.
LoudspeakersBookshelf SpeakersDiscontinued
Estimated price (community-sourced)
$900
Around — community and catalog average, updates slowly
About the SD503
The Usher Audio SD-503 is a premium bookshelf 2-way bass-reflex speaker designed as part of Usher’s SD series. It uses the company’s 1.25-inch DMD dome tweeter and dual 5.5-inch paperfiber complex-cone bass drivers, with a focus on wide bandwidth, low distortion, and strong imaging. It is listed as a center-channel capable model in some retail listings and is shown in multiple finishes, including High Gloss Macassar Ebony, Black, and White.
Specifications
Key Specifications
Sensitivity: 89 dB
Impedance: 4Ω
Frequency: 48-40000 Hz
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