Note on Model Identification: The "AT" series (including the AT-40) is distinct from the more common "AT" (Acoustic Thunder) series from the late 1980s/early 1990s. The AT-40 is a later model (circa late 1990s to early 2000s), often considered part of the "Intensity" or transitional series, featuring a more modern, curved cabinet design while retaining Cerwin-Vega's signature high-efficiency, high-output philosophy.
1. The Woofer (8" Cerwin Vega P/N: 1045 - 8A)
Unlike the iconic orange-surround woofers of the later DX/V series, the AT-40 uses a black butyl rubber surround. This is a clue: CV wanted tighter bass, not just boom. The cast polymer frame reduces ringing. The voice coil is a 1.5" high-temperature Kapton former. This woofer is punchy, not sloppy, but it requires clean power. cerwin vega at40 specs
| Specification | Detail | | :--- | :--- | | System Type | 3-Way, Bass Reflex (Rear Ported) | | Warranty (Original) | 5 Years (Drivers) | | Production Era | 1988 – 1993 (approx.) | | Country of Origin | USA (Assembled in California) | Note on Model Identification: The "AT" series (including
Cons:
The slot port is unlined. Add a small piece of acoustic foam or felt to the back wall inside the cabinet (behind the woofer) to reduce port noise at high volumes. Use case: +2dB for old, dull recordings; -2dB
Before we dive into the datasheet, context matters. The "AT" series stood for "Acoustically Tuned." This was Cerwin Vega’s mid-to-late 80s attempt to compete with brands like JBL, Klipsch, and Infinity in the "high-end consumer" space. Unlike the brutally simple CV speakers of the 70s, the AT series featured:
| Metric | CV AT-40 | Elac Debut 2.0 B6.2 | Klipsch RP-600M | | --- | --- | --- | --- | | Sensitivity | 91 dB | 87 dB | 94 dB | | Bass extension | 45 Hz | 44 Hz | 45 Hz | | Tweeter type | Soft dome | Soft dome | Titanium horn | | Midrange character | Forward, warm | Neutral, laid back | Aggressive, forward | | Power needed | 20-75W | 40-120W | 10-80W |