PMC Makes well regarded transmission line speakers that include a bookshelf model, and they aren't so large, and the insanely popular Bose radios are nothing but plastic boxes with a couple of cheap drivers loaded with transmission lines...a concept Bose laughingly claims to have invented. I also had "woofer pumping" issues when I re-introduced my LPs to my system, and that was remedied first with a pair of Nakamichi line filters, and then with the subsonic rolloff switch when I bought a Cambridge 640P...a feature most phono preamps don't seem to have.