swell box

listen to the pronunciation of swell box
الإنجليزية - الإنجليزية
A box or chamber in an organ that contains the reeds or a set of pipes and has shutters that open or shut usually by means of a pedal in order to regulate the volume of musical tone
A chamber of an organ that houses a pipe or pipes and has shutters for controlling volume
swell box
المفضلات