acoustical network ament capacitor speaker capitulum catkin coaxial speaker complex cone conelet conoid cop cornet corymb crossover network cyme diaphragm dynamic speaker earphone electrodynamic speaker electromagnetic speaker electrostatic speaker excited-field speaker full-fidelity speaker funnel head headphone headset high-fidelity speaker high-frequency speaker horn ice-cream cone loudspeaker low-frequency speaker midrange speaker monorange speaker moving-coil speaker panicle permanent magnet speaker pine cone raceme spadix speaker speaker system speaker unit spike spikelet strobile thyrse triaxial speaker tweeter umbel verticillaster voice coil woofer