Hi there. I have an Ampeg VT-22 with two 8 ohm Vintage 30's in it. Right now the amp is set to 4 ohms, and I believe the speakers are wired in series. I'm curious what difference I'd get with an 8 ohm setting, and if the speakers were wired in parallel what sort of sound difference it would make? I guess I go for a heavier tone, what would the best option be for what I have? I'm pretty new to speaker ohms and such, any info would be appreciated. Thanks!