Yeah, that was the direction I was going to go. I'm not sure how I will do Vas, though. I'm not sure I want to build an extra enclosure. If I did build it, I'd want to do it such that I can mount anything from a 6.5" up to an 18" driver.Can you recommend some signal generation software for the PC? I don't have an oscilloscope, so I'll be restricted to an RMS DMM, but from the research I've done it appears that I should be able to get pretty close.