Tag Archive


1st Order 2nd Order 2nd order crossover B&C DE12TC Butterworth calculator Cms Compliance Crossover DC Resistance Diaphragm Driver Parameters FIlter Free Air Resonance Fs High Pass human Impedance Inductance Le Low Pass Mmd Mms Motor Strength Moving Mass Passive passive crossover calc Power Qes Qms Re Resistance Resonant Frequency Rms Sd Small speaker project Thiele Thiele Small TS Parameters Vas Vd Voice Coil Xlim Xmax

Sd – Effective Diaphragm Area

What Is Sd? Sd (Effective Diaphragm Area) is the active surface area of a speaker cone that moves air to produce sound. It’s usually measured in square meters (m²), but sometimes also specified in square centimeters (cm²). Sd is most often used for calculating other TS parameters, and its fairly common for all woofers with […]