Speaker and modular speaker

A modular speaker, comprising:

• a main module including:
• a cabinet, extending along a longitudinal axis between a first and a second end, the cabinet including a side wall, the side wall extending around the longitudinal axis to surround an internal volume and being provided with an opening to place the internal volume in communication with an outside environment;
• a sound transducer, provided at the first end of the cabinet;
• a connection circuit, provided at the second end of the cabinet and configured to receive a signal and to transmit the signal to the sound transducer;
• a first and a second passive resonator, each comprising a vibrating panel, the vibrating panels being positioned in the internal volume, with respective first faces facing each other and respective second faces opposite the first faces,
• wherein the internal volume includes a first, closed air volume, delimited by an inside surface of the cabinet and by the second faces of the vibrating panels, and a second air volume, delimited by the first faces of the vibrating panels and open towards the outside environment through the opening;
• a rear module, selectable from a plurality of rear modules and connectable reversibly to the second end of the cabinet, the rear module comprising a plurality of electrical connectors operatively connectable to the connection circuit of the cabinet and to a power source to transmit a signal and an electric power supply to the connection circuit, respectively;
• a front module, defining an acoustic accessory selectable from a plurality of front modules, the front module being connectable reversibly to the first end of the cabinet and being configured to modify and/or extend the sound features of the modular speaker.

A method for sound reproduction, comprising the following steps:

• providing a cabinet, extending along a longitudinal axis between a first and a second end, the cabinet including a side wall and extending around the longitudinal axis to surround an internal volume and being provided with an opening to place the internal volume in communication with an outside environment;
• providing a sound transducer, at the first end of the cabinet;
• receiving a signal in a connection circuit located at the second end of the cabinet;
• transmitting the signal from the connection circuit to the sound transducer;
• providing a first and a second passive resonator, each comprising a vibrating panel, the vibrating panels being positioned in the internal volume, with respective first faces facing each other and respective second faces opposite the first faces, wherein the internal volume includes a first, closed air volume, delimited by an inside surface of the cabinet and by the second faces of the vibrating panels to create a volume of loading of the first and second passive resonators and a second air volume, delimited by the first faces of the vibrating panels and open towards the outside environment through the opening so that a rise in the pressure of the first volume causes the vibrating panels to move closer together;
• driving the sound transducer by a motor, whereby the passive resonators are driven by an air pressure change in the first volume, wherein the cabinet comprises a supporting frame and a first and a second half-shell which are reversibly mountable to the supporting frame and which act in conjunction with the supporting frame to define respective portions of the side wall of the cabinet.

A speaker comprising:

• a cabinet, extending along a longitudinal axis between a first and a second end, the cabinet including a side wall, the side wall extending around the longitudinal axis to surround an internal volume and being provided with an opening to place the internal volume in communication with an outside environment;
• a sound transducer, provided at the first end of the cabinet;
• a connection circuit, provided at the second end of the cabinet and configured to receive a signal and to transmit the signal to the sound transducer;
• a first and a second passive resonator, each comprising a vibrating panel, the vibrating panels being positioned in the internal volume, with respective first faces facing each other and respective second faces opposite the first faces,
• wherein the internal volume includes a first, closed air volume, delimited by an inside surface of the cabinet and by the second faces of the vibrating panels, and a second air volume, delimited by the first faces of the vibrating panels and open towards the outside environment through the opening and wherein the connection circuit comprises a plurality of concentric conductive tracks having a planar shape.