AKG WM81 Black Wire-Mesh Caps for Cardioid MicroLite Mics 5-Pack

AKG WM81 Black Wire-Mesh Caps: The First Layer on a Cardioid MicroLite Capsule

The AKG WM81 black 5-pack contains five wire-mesh protection caps for the cardioid 81-series MicroLite microphones, protecting the membrane from wind and pop noise as well as dirt such as make-up and dust. Fitting is optional, since AKG states these microphones can be used with or without the cap, but the cap is the layer everything else in the protection system is built around. Black is the finish for dark hair, dark costume and the many professional positions where a lavalier is meant to be visible. Five caps to a pack is the quantity that keeps a working rig complete rather than the quantity that matches one microphone.

The Two-Layer System, and Why the Order Matters

MicroLite protection is a stack, and the sequence AKG specifies runs capsule, then wire-mesh cap, then foam windscreen above the cap for demanding conditions such as a windy outdoor venue. Each layer solves a different problem: the mesh holds a rigid standoff that resists impact and screens particulate contamination, while the foam is compressible and works by slowing moving air so a breath gust never becomes a pressure spike at the diaphragm. Reversing the order, or removing the cap in order to fit foam directly, discards the impact protection and changes the acoustic loading the manufacturer designed around. Getting the stack right takes no longer than getting it wrong, and it is the single most common fitment error on these microphones.

Perspiration, Skin Oil and Salt Residue

Body microphones fail from the inside far more often than they fail from a dropped connector. Perspiration carries dissolved salts and skin oils, and on a head-worn or hairline mount it travels along skin and hair straight toward the capsule; once the water evaporates the salts stay behind as a residue that holds dust, and the accumulated mass on and around the diaphragm reduces high-frequency output in a way that is gradual enough to be mistaken for a mix problem. A mesh cap does not make a capsule waterproof, but it does intercept the bulk of what would otherwise arrive at the membrane and it can be replaced when it becomes loaded. Dance, musical theatre and fitness-instruction work are the punishing cases, and in all of them a fresh cap is a routine service item rather than a repair.

Black on Dark Hair and in Front of a Camera

Two quite different buyers reach for the black finish. One is the theatre or live-event sound department rigging concealed microphones on dark-haired performers, where black tape, a black cable and a black cap disappear along a parting or behind an ear while a beige rig would show as a light line. The other is the broadcast, panel and streaming operator who mounts the microphone openly on a dark lapel or a collar and wants the whole assembly to read as deliberate equipment rather than as an accident. Both benefit from ordering caps by the pack so that a lost cap during a costume change or a get-in does not force a microphone out of service, and both add the W81 foam windscreen over the top when wind or close-talk plosives enter the picture.