altavoz
/altaˈboθ/ · B2 · noun · m
loudspeaker
🔊 alto + voz = high + voice, a device that makes a voice loud
Altavoz splits into alto (high, loud) + voz (voice). A loudspeaker is literally a high voice: it lifts a quiet signal into a loud one. Note the Spanish v is pronounced like a soft b.