mr_m:"Does it have conventional cone woofers like a hybrid, or no???"
The 3.7i are dipole 3-way planar-magnetic panel speakers with a true ribbon treble section, a quasi-ribbon midrange section and a quasi-ribbon bass section. The true-ribbon is very delicate and light weight foil transducer which results in it being very fast, accurate and detailed. The quasi-ribbon transducers consist of a slightly heavier polymer material which are also quite fast, accurate and detailed but just not to the same extreme degree as the true-ribbon. Both ribbon types utilize precisely placed small magnets for controlling movement and sonic output.
I was a bit concerned that the 3.7i's true ribbon treble might sound overly bright or harsh in my room currently lacking acoustic room treatments (soon to be remedied via several GIK products), thinking I likely would install the provided resistor to attenuate its output. But I've been experiencing nothing but very high quality and detailed treble response thus far with no sense of brightness or harshness playing them unrestricted.