True to the "AT" (Advanced Technology) lineage, the AT-40 features a high-output driver array:
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Fortunately, because of the popularity of the AT series, exact-spec replacement foam kits are widely available. "Re-foaming" the 10-inch woofers is a straightforward DIY project that restores the speakers to their original factory performance. Additionally, checking the internal crossover capacitors and cleaning the rear attenuator dials with electronic contact cleaner will ensure these classic towers continue to perform for decades to come.
The is a vintage 3-way bass-reflex floor-standing speaker known for its high efficiency and powerful bass response, typical of the "AT" (Advanced Technology) series released in the mid-to-late 1980s. Technical Specifications Design Type : 3-Way, Bass-reflex cerwin vega at-40 specs
| Feature | | Cerwin Vega AT-12 | Cerwin Vega AT-15 | | :--- | :--- | :--- | :--- | | Woofer | 10-inch | 12-inch | 15-inch | | Sensitivity | 94 dB | 96 dB | 101 dB | | Low End | 38 Hz | 35 Hz | 28 Hz | | Weight | 42 lbs | 58 lbs | 87 lbs | | Best For | Small rooms, nearfield | Medium rooms, rock music | Massive venues, parties |
High efficiency, often above 95 dB (1w/1m), meaning they play loudly with lower power amplifiers.
10-inch (254 mm) cast-frame, high-excursion woofer with treated foam surround (characteristic orange color). True to the "AT" (Advanced Technology) lineage, the
The 10" woofer is the heart of the AT-40. Unlike the massive 12" or 15" drivers found in AT-15 or AT-12 models, the 10" unit offers a compromise: tighter, faster bass with less boominess, while still able to move substantial air. The cast-frame basket reduces resonance, and the allows for significant cone travel without distortion.
The specs suggest 100W RMS / 200W peak. However, because the sensitivity is so high, you must be careful with amplifier clipping.
| Specification | Detail | | :--- | :--- | | | 4-Way Floor Standing Speaker | | Woofer | 12" Cast Frame High-Excursion | | Midrange | Dual 5.25" Treated Paper Cones | | Tweeter | 1" Soft Dome (Cerwin-Vega "Eyes") | | Super Tweeter | 1" Cone Type (Extended High Output) | | Frequency Response | 30 Hz – 22 kHz | | Sensitivity | 98 dB (1 Watt / 1 Meter) | | Nominal Impedance | 8 Ohms | | Power Handling | 300 Watts (Maximum) | | Crossover Frequencies | 250 Hz / 2.5 kHz / 8 kHz | | Dimensions (Approx) | 38" H x 15" W x 13" D | | Weight (Per Speaker) | ~45 lbs | Can’t copy the link right now
are legendary among rock fans, party hosts, and lovers of cinematic sound.
Now let's decode what these numbers mean in practice.