I would like some clarification on the dust caps and performance. I have always thought a pushed in dust cap on a woofer can't affect performance? I had a guy on AVSforum tell me this was not totally true, he said it can affect dispersion?

M80s VP180 4xM22ow 4xM3ic EP600 2xEP350
AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85