Patent ID: 11917361
Assignee: nan
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A loudspeaker having improved frequency responses at lower frequencies comprising a loudspeaker cabinet, a speaker disposed on a front wall of the loudspeaker cabinet, a tuned port, the tuned port is disposed on a wall of the loudspeaker cabinet that is opposite the speaker, said tuned port tuned to a frequency, and a transmission line, said transmission line tuned to a frequency, the transmission line is defined by at least one cabinet wall of the loudspeaker cabinet, the transmission line is formed in a cavity of the loudspeaker cabinet and directly behind the speaker, wherein the transmission line and the tuned port are simultaneously tuned and wherein the frequency of the transmission line is tuned to the frequency of the tuned port.