If you search for "Cerwin Vega AT40 specs," you will often find these incorrect values:
| Parameter | Incorrect Value (Fake/Wrong) | Correct Value (Measured) | | :--- | :--- | :--- | | Model | AT-40 | AT-10 (or AT-12) | | Woofer Size | 10" (25cm) | 12" (30cm) – CV part# 12CV-AT | | Power RMS | 40 Watts | 125 Watts | | Peak Power | 80 Watts | 250 Watts | | Sensitivity | 89 dB | 97 dB @ 1W/1m | | Impedance | 8 Ohms (Nominal) | 6 Ohms minimum / 8 Ohm average | | Tweeter Type | 1" Soft Dome | 1.5" Phenolic Ring Radiator |
This is the most common repair. Order a Cerwin Vega AT40 specific foam repair kit (8-inch). Do not use universal foam meant for home theater subs; CV foam is specifically angled (filleted). cerwin vega at40 specs fix
Tools Needed:
Step 1: Remove the Woofer Unscrew the 8 screws on the baffle. Gently lift the woofer. Desolder the positive (red) and negative (black) leads from the woofer terminals. Remove the old foam gasket tape on the baffle. If you search for "Cerwin Vega AT40 specs,"
Step 2: The Dirty Work – Removing Old Foam Do not try to save the old foam.
Step 3: Center the Voice Coil (Critical Step) You have two options here: Step 1: Remove the Woofer Unscrew the 8
Step 4: Glue the Foam
Step 5: Reinstall Solder the wires back (polarity matters: positive terminal on woofer goes to the smaller connector on the crossover). Screw it in.
The issue: The internal wire clips have corroded, or the old electrolytic capacitors have drifted so far out of spec they are blocking frequencies. The fix: Re-soldering and recap (Part 5).
Let’s fix your speakers. Safety first: Unplug everything. Work on a carpet or towel to protect the veneer.