Cerwin Vega At40 Specs Fix ((exclusive)) Site
Insert a thin strip of absorbent paper into the circular magnetic gap where the voice coil sits. Drag it around the perimeter. The paper will pull up the old, darkened fluid. Repeat with fresh strips dipped in isopropyl alcohol until the paper comes out clean.
Depending on the cabinet version, access the switch by removing the rear input terminal plate or removing the woofer to reach it from inside.
Vintage Cerwin Vega speakers are famous for their longevity, but specific components often require attention after decades of use.
Elias had almost made a rookie mistake two days ago. He’d measured the blown woofer and hopped online to buy a "close enough" replacement driver. Same size, same impedance. But the specs didn’t match the magnet weight or the cone excursion. A generic driver would have cheated the AT-40 of its soul. cerwin vega at40 specs fix
If you own a pair of these classic towers, keeping them running perfectly requires accurate technical data and targeted repair strategies. This comprehensive guide covers the official factory specifications and provides actionable fixes for the most common issues that plague the AT-40 today. 1. Cerwin-Vega AT-40 Factory Specifications
Got a specific spec you can't decipher? Drop it in the comments below.
1-inch dome tweeter (often a polymer or soft dome design) Cabinet & Physical Dimensions Enclosure Type: Bass reflex (ported design) Insert a thin strip of absorbent paper into
| Part | Part Number | Source | Approx Cost | | :--- | :--- | :--- | :--- | | | CV-AT40-FK | SimplySpeakers / Midwest Speaker | $25 | | 8" Woofer (Recone) | 1301 (NLA) | eBay (Used – risky) | $80+ | | Tweeter Diaphragm | CV-1302-DIA | Speaker Exchange | $35 | | Complete Tweeter | CV-1302 | Rare – Look for used | $50 | | L-Pad 8 Ohm | Generic 8-Ohm 15W | Parts Express (#260-250) | $8 | | Binding Posts | 5-Way Banana posts | Parts Express (#091-1245) | $10 |
The original poly-ether foam surrounds deteriorate over 15 to 20 years, turning into a sticky, crumbly residue that ruins bass response and threatens to warp the voice coil.
The Ultimate Cerwin-Vega AT-40 Resource: Factory Specifications and Complete Repair Guide Repeat with fresh strips dipped in isopropyl alcohol
Run a frequency sweep from 20 Hz to 20,000 Hz. Listen for any buzzing, scraping, or rattling sounds that indicate an uncentered voice coil or a loose cabinet brace.
Do not throw away or replace the original woofers with aftermarket brands. Replacing the original cast-frame driver ruins the speaker's unique parameters and resale value. Instead, purchase a 10-inch Cerwin-Vega re-foam kit (specifically looking for the iconic red/orange color).
Access the crossover board attached to the inside of the rear terminal cup.
10-inch low-frequency driver with a signature red foam surround.
Use a razor blade, isopropyl alcohol, and scraping tools to completely remove the old, sticky foam residue from both the metal basket and the outer edge of the paper cone. The surfaces must be completely clean for the new glue to bond.
