smådiaphragm

Smådiaphragm is a term used in Swedish-language sources to describe small-diaphragm microphones. In English, the phrase typically refers to small-diaphragm condenser microphones, which use a compact capsule with a relatively small diaphragm. These microphones are valued for fast transient response and detailed high-frequency performance.

Construction and operation: The capsule is relatively small, with a diaphragm only a few millimeters across. The small size lets the diaphragm react quickly to pressure changes, yielding precise transients and extended high-frequency response. Most small-diaphragm condensers require external power, usually supplied as phantom power, to maintain the capacitor charge; some variants are electret and have different power requirements.

Characteristics and performance: Small-diaphragm microphones generally offer excellent transient fidelity, accurate articulation, and low self-noise. They often deliver a linear, or subtly bright, high-frequency response that helps reveal airiness in vocals, cymbals, and string instruments. Polar patterns are commonly cardioid, but many models provide hypercardioid or figure-of-eight options. Their compact size also makes them easy to position for close-miking tasks.

Applications: They are widely used as overhead mics for drums and percussion, on acoustic guitars and pianos, for cymbal and hi-hat miking, and in orchestral and ensemble setups. In broadcast and studio work, small-diaphragm mics are favored when fast transients and clear highs are desired without excessive proximity effect.

Variants and considerations: Small-diaphragm mics can be true condensers or electret designs, and power requirements vary accordingly. They generally have less proximity effect than many large-diaphragm mics, but care is still needed to manage low-frequency balance and room acoustics. Robust construction and consistent performance across temperatures are common advantages.