Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

What is the passive radiator “notch”?

April 26, 2017notch passive Radiator

0

Posted

What is the passive radiator “notch”?

1 Answer

0

Posted

The Vas of the passive radiator forms a notch filter when combined with the the cabinet Vb and will null the output near the free air resonant frequency of the PR. Using larger area PR will force this notch lower in frequency while keeping the tuning frequency of the cabinet the same. Hence there can be slightly more LF output below Fb with the larger PR area. Most of the time this is not a large issue. The resonant frequency of the larger PR’s is down as low as 3.4Hz, so the notch does not affect any of the useable frequency range.