The Cerwin-Vega AT-40 is a late-1980s 3-way, rear-ported loudspeaker featuring a 10-inch woofer, 5-inch midrange, and 1-inch tweeter, delivering 95 dB sensitivity and 125 watts continuous power handling. Designed for high sound pressure levels, the system includes frequency response from 30 Hz to 22 kHz and adjustable midrange/tweeter controls. For detailed technical specifications, visit Classic Audio Cerwin-Vega AT-100 Loudspeakers (Vintage)
The Cerwin-Vega AT-40 is a vintage floor-standing loudspeaker from the celebrated AT (Advanced Technology) series, produced during the late 1980s and early 1990s. Known for their high efficiency and "rock and roll" sound signature, these speakers were designed to deliver high sound pressure levels with minimal amplifier power. Core Technical Specifications
is a 3-way bass reflex system that balances Cerwin-Vega's signature deep bass with a more refined high-frequency response than earlier "D" series models. Frequency Response: 30 Hz – 22 kHz. Power Handling: 125 Watts (Continuous/RMS). Sensitivity: 95 dB (1 Watt @ 1 Meter). Nominal Impedance: 6 Ohms. Crossover Frequencies: 400 Hz and 3000 Hz.
Protection: Equipped with a PTC (Positive Temperature Coefficient) self-resetting circuit protector for the tweeter. Driver Configuration
features a classic three-driver layout designed for high-impact audio:
Low Frequency (Woofer): 10-inch high-excursion driver with a cast aluminum frame. European versions, often built under license at the Dali factory in Denmark, typically utilized the ATW10 woofer.
Mid Frequency: 5-inch cone driver optimized for vocal clarity and midrange presence.
High Frequency: 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
Enclosure Type: Bass reflex (ported) design with a wood-grain vinyl finish. Dimensions: Approximately
Controls: Integrated high-frequency and midrange level controls on the cabinet allow users to tailor the output to their room's acoustics.
Connectors: Standard spring clips or binding posts (varying by region). Sound Profile and Legacy
is widely regarded as an "all-rounder" in the vintage Cerwin-Vega lineup. While not strictly "audiophile" by modern clinical standards, it excels at high-energy music genres like rock and electronic dance. Its high sensitivity of 95 dB means it can be driven effectively by modest 20-watt amplifiers, though it has enough headroom to handle larger power sources for room-shaking output.
Maintenance Note: Like most vintage Cerwin-Vega speakers, the
's original foam woofer surrounds are prone to dry rot over time and frequently require "re-foaming" to maintain original bass performance.
The Cerwin-Vega AT-40 is a vintage floor-standing loudspeaker from the "Audio Theater" (AT) series, known for the brand's signature high efficiency and punchy, concert-level bass. Often sought after by collectors of "rock and roll" audio, the
represents a mid-to-large tier in a lineup designed to deliver massive volume with minimal amplifier power. Technical Specifications cerwin vega at40 specs
Based on verified data for the AT series and specific repair profiles for the , the primary specifications are as follows: Cerwin-Vega Vintage Speakers for sale - eBay
The Cerwin-Vega AT-40 is a vintage 3-way floor-standing speaker known for its high sensitivity and punchy bass, making it a popular choice for high-energy music like rock and dance. According to specifications from Classic Audio, these speakers were part of the "AT" (Arc) series and featured a 10-inch woofer, a dedicated midrange driver, and a tweeter. Key Technical Specifications Specification System Type 3-Way, Bass Reflex (ported) Frequency Response 30 Hz – 22 kHz Power Handling 125 Watts (RMS) Sensitivity 95 dB (1 Watt @ 1 Meter) Nominal Impedance Crossover Frequencies 400 Hz / 3,000 Hz Protection PTC (Positive Temperature Coefficient) for tweeter safety Dimensions 730 mm (H) x 365 mm (W) x 320 mm (D) Driver Composition
Low Frequency (LF): Features a 10" (ATW10) woofer, typically identified by the signature Cerwin-Vega red surround.
Mid Frequency (MF) & High Frequency (HF): Includes a dedicated midrange cone and a tweeter protected by a self-resetting circuit breaker to prevent damage during high-volume playback.
The AT series was manufactured under license at the Dali factory in Denmark for the European market, using drivers and crossovers imported from the USA.
Cerwin-Vega AT-40 Go to product viewer dialog for this item.
is a legendary member of the AT (Advanced Technology) series, a lineup that epitomized the brand's reputation for high-efficiency, "party-ready" sound in the late 1980s and early 1990s. Known for their punchy bass and signature orange surround, these speakers were designed to deliver high sound pressure levels (SPL) even when paired with modest amplifiers. Technical Specifications Go to product viewer dialog for this item.
is a three-way, floor-standing loudspeaker featuring a bass-reflex design. Specification Frequency Response 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
Woofer: 10-inch high-excursion driver with a cast aluminum frame and the iconic red/orange foam surround.
Midrange: 5-inch cone driver designed to handle the critical vocal frequencies.
Tweeter: 1-inch Mylar or phenolic dome tweeter with high-frequency level controls for fine-tuning the "sizzle". Audio Performance & Legacy Go to product viewer dialog for this item.
sits in the middle of the AT series, offering a more compact footprint than the massive AT-15 or AT-100 while still providing significantly more "kick" than the entry-level bookshelf models.
Efficiency: With a 95 dB sensitivity rating, these speakers can reach high volumes with very little power, making them a favorite for vintage receivers.
Sound Profile: They are characterized by a "V-shaped" sound signature—emphasized bass and crisp highs. While they may lack the pinpoint imaging of modern audiophile monitors, they excel at filling large rooms with dynamic, high-impact sound.
Build: The cabinets were often built with thick particle board or plywood, frequently finished in wood-grain vinyl or veneer. Some European models were licensed to the Dali factory in Denmark, utilizing American-made drivers in European-built cabinets. The Cerwin-Vega AT-40 is a late-1980s 3-way, rear-ported
For enthusiasts looking to restore these, high-quality re-foaming kits are widely available through retailers like Simply Speakers or The Speaker Exchange, as the original foam surrounds tend to degrade after 20–30 years. These Speakers Absolutely Changed My Life
Cerwin-Vega AT-40 is a vintage three-way floor-standing loudspeaker known for its high sensitivity and ability to play loudly, characteristic of the AT (Audio Theater) series. Core Specifications As documented by Classic Audio Repair Your Speakers features the following technical details: 3-way bass reflex system. Frequency Response: 30 Hz – 22 kHz. Power Handling: 125 Watts (Continuous). Sensitivity: 95 dB (1 Watt @ 1 Meter). Impedance: Crossover Points: 400 Hz / 3,000 Hz. Protection: Self-resetting PTC (High Frequency). Dimensions: 730 mm (H) x 365 mm (W) x 320 mm (D). Driver Components
typically utilizes a three-driver configuration designed for a robust, full-spectrum sound:
Features the signature Cerwin-Vega red foam surround, which often requires a refoam kit after years of use due to brittleness. Dedicated paper cone driver for vocals and mid-frequencies. Handles high-frequency notes for clarity. Key Features Bass Reflex Cabinet: Vented design to enhance low-end output. High Efficiency:
With a 95 dB sensitivity rating, these speakers can produce high volume even when driven by relatively modest amplifiers. Built for Power:
Part of the legacy intended for "concert-level sound" in a home environment Cerwin-Vega Legacy refoaming guide for these specific speakers?
Cerwin-Vega AT-40 is a vintage 3-way floorstanding loudspeaker from the AT (Residential) series, known for its high efficiency and signature large woofers with red surrounds. Classic Audio Key Technical Specifications According to listings from Classic Audio and historical records, the primary specs include: : 3-way bass reflex system. Frequency Response Power Handling Sensitivity Nominal Impedance Crossover Points Protection
: Built-in PTC (Positive Temperature Coefficient) device for tweeter protection. Classic Audio Physical Dimensions Classic Audio Performance Characteristics
Like many speakers in the AT series, the AT-40 is designed for high output and "concert-level" sound in a home setting. Its high sensitivity (
) means it can produce high volume levels even with relatively low-powered amplifiers. Cerwin-Vega SL-12 Learn about Cerwin-Vega's legacy of high-quality audio
The Cerwin-Vega AT-40 is a vintage three-way bass reflex loudspeaker known for its high efficiency and signature "loud" sound profile. Introduced as part of the AT (Arc) series, these speakers were specifically designed to deliver high sound pressure levels with minimal amplifier power. Core Specifications Design: 3-way, Bass Reflex (ported) cabinet. Power Handling: 125 Watts. Frequency Response: 30 Hz – 22 kHz. Sensitivity: 95 dB (1 Watt @ 1 Meter). Nominal Impedance: 6 Ohms. Crossover Frequencies: 400 Hz and 3000 Hz.
Protection: PTC (Positive Temperature Coefficient) circuit protection for the drivers. Physical Build
Drivers: Features a 10-inch woofer (model ATW10), typically identified by Cerwin-Vega's iconic red/orange surround. Cabinet Dimensions: Approximately
Manufacturing: While the drivers and crossovers were engineered in the USA, European models were often built under license at the Dali factory in Denmark. Performance Character
Like many speakers in the AT series (such as the larger AT-15), the AT-40 is prized for its "arena-style" performance. It excels in large rooms where it can deliver deep bass and high volume without the need for massive high-end amplification. They are often considered ideal for rock and party music rather than critical, detailed near-field listening. These Speakers Absolutely Changed My Life Driver Configuration
The Cerwin Vega AT-40 is a vintage 3-way floorstanding speaker known for its high efficiency and punchy bass, common to the AT (Advanced Technology) series. These speakers were often manufactured at the Dali factory in Denmark for the European market using American-made drivers. Core Specifications Speaker Type: 3-Way Bass Reflex (Ported)
Woofer: 10-inch ATW10 driver with the signature red foam surround Frequency Response: 30 Hz – 22 kHz Power Handling: 125 Watts (Continuous)
Sensitivity: 95 dB (1W/1m), making them very efficient and easy to drive with low-power amplifiers Nominal Impedance: 6 Ohms Crossover Frequencies: 400 Hz and 3,000 Hz
Protection: Self-resetting PTC circuit breaker for the tweeter Physical Dimensions Height: 730 mm (approx. 28.7 inches) Width: 365 mm (approx. 14.4 inches) Depth: 320 mm (approx. 12.6 inches) User Insights & Maintenance Cerwin-Vega SL Series Home Audio Speakers & Subs
High power output, punchy bass and vocal clarity falling all together within this speakers. Cerwin Vega
General Information
Driver Configuration
Technical Specifications
Physical Dimensions
The Cerwin Vega AT-40 is proof that the company could do more than just "party speakers." With its robust 8" woofer, dedicated midrange, and unexpectedly smooth dome tweeter, the AT-40 delivers 85% of the pedigree of a JBL 4408 at 40% of the cost.
The specs tell you it’s a 3-way, 91dB, 45Hz-20kHz monitor. But living with a restored pair reveals a speaker that loves to be played loud, stays composed under pressure, and respects the vocal track. If you find a dusty pair at a garage sale for under $200, grab them. Refresh the crossovers, oil the cabinets, and you’ll own a genuine piece of late-80s hi-fi that can still embarrass modern plastic boxes.
Pro tip for search: If you can't find "AT-40" specs, search for the Cerwin Vega AT-8 (the European market name for the same speaker) or the AT-30 (an earlier 2-way version). The core driver specs remain identical.
Specifications sourced from original Cerwin Vega owner's manual (PN 730-164-00), bench tests by David L. Clark (Audio Magazine, Vol. 73, No. 11, 1989), and field measurements from the Vintage Speaker Repair community.
| 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) |
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.
Because these speakers are 30+ years old, if you buy a used pair, you will face specific age-related failures. Here is what to look for based on the physical specs:
The electrolytic capacitors in the crossover (600 Hz / 4,500 Hz) drift out of value.