I use a large pair of Technique floor speakers for my fronts and while tearing down the whole system noticed that they can be hooked up on a high or low frequency.
Seeing as I'm vastly upgrading my receiver and adding a 150 watt sub woofer, should I connect them on high or low frequency?
From what you said, I believe each of the Technics speakers has 2 separate terminal sets for biwire or biamp. They can't be used to replace a subwoofer, however, because they can't go as low as a subwoofer. If you are interested in biwiring the speakers and your receiver provides parallel connection for speaker sets A and B, connect 1 terminal set on each spkr to the speaker terminal A and the other 1 to the speaker terminal B on the receiver. Many people notice sonic improvement when they biwire the speakers.
Remember that for multichannel movies and SACD's/DVDA's, all speakers must be timbre matched so we do not want to mix speakers from different manufacturers.