A sound insulator of the invention includes a sound absorption layer 202 and an air-impermeable resonance layer 203, which are bonded to each other via an adhesive layer 204. The sound absorption layer 202 has a thickness in a range of 5 to 50 mm and an ar...

The present invention provides a bracket for mounting a speaker that allows a speaker to be easily mounted and removed without impairing the acoustic characteristics of the speaker used for a specific use such as car audio equipment, and that can reduce th...

The present invention provides a bracket for mounting a speaker that allows a speaker to be easily mounted and removed without impairing the acoustic characteristics of the speaker used for a specific use such as car audio equipment, and that can reduce th...

The present invention provides a bracket for mounting a speaker that allows a speaker to be easily mounted and removed without impairing the acoustic characteristics of the speaker used for a specific use such as car audio equipment, and that can reduce th...