Have a pair of AT40s? Check the serial numbers on the back; early production runs (1988-1989) used a slightly different 4-ohm tweeter. Always verify impedance with a multimeter before cranking the volume.
The Cerwin-Vega AT-40 is a three-way, bass-reflex floor-standing loudspeaker designed for high-efficiency home audio and home theater applications. True to Cerwin-Vega’s heritage, the AT-40 prioritizes dynamic range, high sensitivity, and extended low-frequency response. The system is characterized by a distinctive 10-inch cast-frame woofer with a proprietary foam surround, a midrange driver, and a polycell horn-loaded tweeter. This report details the technical specifications, driver configuration, enclosure design, and performance expectations.
The Cerwin-Vega! AT-40 is a studio monitor and consumer loudspeaker model from Cerwin-Vega, a brand long associated with high-efficiency, bass-forward loudspeakers designed originally for live sound and car audio before moving into home and studio markets. The AT-40 exemplifies the company’s design priorities—robust low-frequency response, high sensitivity, and a focus on musical impact—while reflecting trade-offs common to many speakers that emphasize bass and loudness.
High power output, punchy bass and vocal clarity falling all together within this speakers. Cerwin Vega