I am still trying to slowly pull together information to create a great set of speaker. I don't want to just copy a set of plans, I want to design something myself. I was wondering, do the newer jbl speakers like the ones in the cinema sound speakers have the same quality of the older jbl speakers? For example, the drivers in my L-100's are still working great 30+ years later. Would a newer 12" Jbl driver do the same, or should I plan on finding old components to get the quality?