Features a 10-inch woofer (model ATW10), typically identified by Cerwin-Vega's iconic red/orange surround. Cabinet Dimensions: Approximately

| Specification | Detail | | :--- | :--- | | | Cerwin-Vega | | Model | AT-40 | | Series | AT (Active Tuned) Series | | Type | 3-way, bass-reflex floor-standing loudspeaker | | Release Year | Approx. 1989 |

Unlike the AT-60 which used a 12" woofer, the AT40’s is the star. The slightly smaller cone offers faster transient response (think tight kick drums) compared to the floppy 12". The 94 dB sensitivity means these speakers are loud . For perspective, a modern bookshelf speaker might be 85 dB; the AT40 is twice as loud at the same wattage.

Among their most celebrated vintage lineups is the AT (Advanced Technology) series. Sitting near the top of this legendary family is the Cerwin-Vega AT-40. If you are looking to buy a vintage pair, restoring an old set, or just researching classic audio gear, this comprehensive guide breaks down every critical specification, design feature, and performance metric of the AT-40. Understanding the Cerwin-Vega AT Series

10-inch (25 cm) cast-frame low-frequency driver with a high-excursion red foam surround.

The foundation of the AT-40 is its heavy-duty wrapped in the famous, striking red foam surround . The driver features a large motor structure and a lightweight, rigid fiber cone designed to move air quickly. It fires into a tuned rear-facing bass-reflex port, allowing the system to achieve authentic, physical bass extension all the way down to 30 Hz without needing hundreds of watts of amplifier power. 2. Mid-Frequency Cone (5-Inch)

The AT-40 represents a perfect middle ground in the lineup. It was engineered for listeners who wanted the thunderous bass performance of a large floorstanding speaker without the overwhelming, room-dominating physical footprint of the top-tier models. Like its siblings, the AT-40 was designed with high sensitivity in mind, meaning it could deliver massive volume levels even when paired with modest, lower-powered amplifiers. Cerwin-Vega AT-40 Detailed Technical Specifications