Cerwin Vega At40 Specs Fix File

However, time is the enemy of vintage audio. If you own a pair of AT-40s, you’ve likely noticed that the foam surrounds have turned to dust, the tweeters sound muted, or the bass has lost its punch.

Check the voice coil resistance with a multimeter or inspect the cabinet for air leaks around the terminal cup. Disclaimer: Working with electronics and solvents requires caution. Always work in a ventilated area. If your voice coil is seized or your cabinet is water damaged, professional reconing might be required. cerwin vega at40 specs fix

Re-foaming (see Step-by-step below). Issue #2: The Dying Tweeter (Muffled highs) The AT-40 tweeter uses ferrofluid (magnetic liquid) to cool the voice coil. Over 30 years, this fluid turns into sticky, black goo or dries into powder. This causes the tweeter to drop -10dB of output or stop working entirely. However, time is the enemy of vintage audio