RFT K13 Profil Speakers - the real East German deal! Rare twin West German speakers are an extremely well-constructed set, from an era when quality of build meant something. They're rated at 50w, are a 4ohm load and a non-ported sealed bass reflex design. RFT Acoustics model K13 Profil, 8" woofer with rubber surrounds, 1" dome tweeter very solid construction, heavy, speaker grill has metal mesh screen instead of cloth, great sound quality. Cosmetically fair, some scuffs and bent mesh.