Typically rated to handle 5 – 125 Watts RMS (with significantly higher peak power handling, often up to 300W or more).
The paint a picture of a versatile, high-efficiency, bass-capable floorstander that excels at rock, pop, electronic, and home theater. They are not the most neutral or detailed speakers—audiophiles seeking flat frequency response should look elsewhere. But for raw dynamics, explosive transient response, and that "live concert" feel, the AT-40 delivers.
Self-resetting PTC (Positive Temperature Coefficient) device for tweeter safety. Driver Configuration & Build
The core appeal of the Cerwin-Vega AT-40 lies in its impressive electrical efficiency and massive headroom. Unlike modern low-sensitivity bookshelf speakers that require high-current amplifiers, the AT-40 can reach party-level volumes with a modest power source. 📊 Technical Spec Sheet Specification 3-Way Bass Reflex (Ported Enclosure) Frequency Response 30 Hz – 22 kHz Power Handling Capacity 125 Watts (Continuous RMS) Sensitivity (1W @ 1M) Nominal Impedance Crossover Frequencies 400 Hz / 3,000 Hz High Frequency Protection PTC (Positive Temperature Coefficient) Automatic Reset Cabinet Dimensions (H x W x D) 730 mm x 365 mm x 320 mm (approx. 28.7" x 14.3" x 12.6") Drivers and Acoustic Architecture cerwin vega at-40 specs
excels with rock, EDM, hip-hop, and movies. They deliver a physical, energetic sound.
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The integrated crossover network is designed to blend the three drivers seamlessly. Crucially, the Typically rated to handle 5 – 125 Watts
This provides a balanced sound profile, splitting frequency duties between a dedicated woofer, midrange, and tweeter for clearer sound separation. Legacy and Application
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| Specification | Detail | | :--- | :--- | | | 3‑way, bass‑reflex (rear‑ported) floorstanding loudspeaker | | Woofer | 10‑inch (25 cm) treated foam surround woofer | | Tweeter | 1‑inch titanium dome tweeter (similar to later CV designs) | | Midrange Driver | 3‑inch or 4‑inch cone driver (information varies) | | Frequency Response | 30 Hz – 20,000 Hz (±3 dB) | | Nominal Impedance | 8 ohms | | Power Handling | 150 watts RMS (estimated) / 300 watts peak (based on comparable period CV models) | | Sensitivity | 90 dB / 1W / 1m (estimated) | | Dimensions (H x W x D) | 73 cm × 36 cm × 35 cm (28.7″ × 14.2″ × 13.8″) | | Weight | 18 kg (39.7 lbs) per speaker | | Year of Production | Approximately 1989 | But for raw dynamics, explosive transient response, and
The internal crossover networks use electrolytic capacitors that can dry out over decades, causing the tweeter or midrange to sound dull. Swapping the old capacitors with modern film capacitors can completely revitalize the speaker's clarity.
: Like many vintage Cerwin Vegas, the original foam surrounds on the woofers are prone to "foam rot" over time and frequently require re-foaming to maintain bass performance. Cerwin Vega AT Series
High-sensitivity tower for rock, electronic music, and cinema.