Arrangement of loudspeaker mounted in housing or holding device, has monopole speaker which receives back closed volume, and dipole speaker makes back radiated sound to arrive into listening room

摘要

The arrangement has a monopole speaker which receives back the closed volume. The dipole speaker makes the back radiated sound to arrive into the listening room. The speakers are equalized either actively or passively or acoustically in the frequency response, so that total frequency response is produced to satisfy the requirements of the loudspeakers, and the frequency of desired proportions is obtained from the speaker.