I have a pair of PSB Image S50 surround speakers. I believe they are either called Bipole or Dipole. I was checking the speakers out today and noticed something unusual about the bass reflex ports. There are 2 on each speaker, under the drivers. On every other speaker I've seen, the port enters the cabinet and you can feel air exiting the port when the speaker is playing.
On the S50's there are plastic "blanks" on the inside of each port, basically isolating the port from the inside of the cabinet. No air is coming out of the ports because of this. What is the reason for this design?
On the S50's there are plastic "blanks" on the inside of each port, basically isolating the port from the inside of the cabinet. No air is coming out of the ports because of this. What is the reason for this design?