I was thinking about buying Sonata I's. In my research,
I read that the Sonatas sound absolutely great, but are
missing bottom end extension. It was a complaint that kept coming up from owners and reviewers. Best way to get bottom end extension is to increase the power of your amp. But, the Sonatas are incredibly efficient and shouldn't need much power to make them sing. Another way to get more bass slam is from your front end components. But, rather than rely on my memory, I would get info on how the Sonatas are rated as far as bottom end extension. IMO, trying to get the Sonatas to produce bottom end extension with cables if they are not built to resolve low bass will ultimately prove frustrating. My best advice would be to either enjoy
your speakers for what they do well, which is produce wonderful music from mid-bass on up, or to add a top-notch sub-woofer, which will give you the bottom end you are seeking. Personally, I like the Revel B-15. It is
expensive, but it has an excellent set-up to help you
integrate it into your system. I see them offered used
on Audiogon from time to time.