Not a guitar …

and even the very opposite if well designed !

Cabinet and internal cavity of a guitar are used to amplify and shape it’s sound character, the cabinet of a loudspeaker should absolutely not !

Well designed loudspeaker cabinets are exempt of coloration or resonance … full loudspeaker design considerations are a complex mix of personal style, actual usage and available budget but they all share the same thing … a solid and free of resonance enclosure !