If I purchase Parts Express's foam surrounds to replace a pair of 7'' woofers, which should I
purchase? I am not sure if the 6.5'' foam surrounds would stretch far enough without having some change in the woofers specifications. The woofers are from Daliah Loudspeakers, they used a 7'' Scan Speak with a 1'' deep voice coil for extreme excursion and low bass.