1-inch microcell polymer dome tweeter. This represented a departure from traditional horn-loaded tweeters, offering a smoother, less "shouty" high-end. Design and Build
If you find a pair of Cerwin Vega AT40s with intact cabinets, buy them. Budget $50 for a re-foam kit and one afternoon of work. Once restored, these speakers will give you a 38Hz low end and party-level volume that puts most modern $1,000 bookshelf speakers to shame. The specs don't lie—this is a high-efficiency legend. cerwin vega at40 specs
Analyzing the specs reveals the AT-40's personality. The high 102 dB sensitivity explains the speaker's lively, dynamic presentation—whispers are clear, and explosions are instantaneous. The 32 Hz low-end spec explains the visceral, chest-thumping bass. However, the spec sheet also hints at the compromises. The phenolic dome tweeter, while durable, is less airy and detailed than fabric or metal domes. The large ported enclosure, while deep, can sound "one-note" on complex acoustic bass lines compared to a sealed or transmission-line design. 1-inch microcell polymer dome tweeter
In the pantheon of loudspeaker manufacturers, few names are as synonymous with raw power, efficiency, and visceral low-end impact as Cerwin Vega. While high-end audiophile brands chase flat frequency responses and vanishing distortion, Cerwin Vega has always catered to a different crowd: the rock concert-goer, the home theater enthusiast, and the DJ who needs to fill a warehouse. The stands as a perfect distillation of this philosophy. Introduced as part of the "AT" (Acoustic Technology) series, the AT-40 represents a bridge between the company’s legendary party speakers of the 1970s and the more refined home audio expectations of the late 1980s and 1990s. To understand the AT-40 is to understand the engineering trade-offs that define a true high-efficiency loudspeaker. Budget $50 for a re-foam kit and one afternoon of work
is a three-way, floor-standing loudspeaker featuring a bass-reflex design. Specification 30 Hz – 22 kHz Power Handling 125 Watts (RMS/Peak capability) Sensitivity 95 dB (1 Watt @ 1 Meter) Nominal Impedance Crossover Points 400 Hz / 3,000 Hz HF Protection Self-resetting PTC circuit breaker Dimensions (H x W x D) 730 mm x 365 mm x 320 mm (~28.7" x 14.4" x 12.6") Driver Configuration