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What Does That Hole in Your Subwoofer Do?

So, your subwoofer has that hole in it because it's a precisely-engineered opening to a specially-tuned resonance chamber ...
Ars Technica

Subwoofer..instead of single LFE port, use Y RCA cable for better bass?

I have a svs pb 2000 pro subwoofer. It has a LFE port as well as rca white and red jacks. My speakers are klipsch the sevens with one LFE port out on the back. Someone told me that instead of using a ...