Cerwin Vega At-40 Specs

The Cerwin-Vega AT-40 is a vintage 3-way floor-standing speaker known for its high efficiency and massive output, often described as a "party speaker" capable of reaching high sound pressure levels with minimal power. While specific detailed brochures for the AT-40 model specifically are rarer than its larger siblings (like the AT-80 or AT-100), it follows the standard design of the AT series introduced in the late 1980s. Technical Specifications

• Placement: Give them space from walls (if possible) to avoid exaggerated bass from boundary reinforcement; stands at ear height sharpen imaging.
• Room treatment: Absorb first‑reflection points and tame the corners—lessens bloom and clarifies the midrange.
• Cross-reference: Use a flatter nearfield monitor or accurate headphones during final balance decisions to avoid over‑compensating for their bass.
• EQ and sub integration: If you want very tight low end, use a hi‑pass on the AT-40 or integrate a calibrated subwoofer to offload the deepest octaves with better control.

Signature Bass: Like most Cerwin Vegas, the AT-40 excels in the low end. The 10-inch woofer (often featuring the iconic red/orange surround) provides a "chest-pounding" bass experience that is perfect for rock, hip-hop, and house music. cerwin vega at-40 specs

1. Foam Rot (Woofer): As noted, the 10-inch foam surround is the weak point. Re-foaming kits are widely available for $30–40. Follow the spec: 10-inch, angled inner attachment.
2. Ferro-fluid drying (Tweeter): After 30+ years, the fluid in the tweeter hardens, reducing high-frequency output. You can clean and replace the fluid (0.2mL per tweeter) or buy replacement diaphragms (part # CV-25).
3. Cabinet Vinyl Peeling: The vinyl wrap on the MDF can peel at the edges. Wood glue or contact cement fixes this. While not a "spec," it affects value.

Physical Dimensions & Weight

• Height: 26.5 inches (673 mm)
• Width: 13.5 inches (343 mm)
• Depth: 11.75 inches (298 mm)
• Weight: 42 lbs (19 kg) each – Heavier than it looks due to the large woofer magnet and dense MDF.