Denis, if there are any connections between the high frequency and low frequency binding posts on the back of the speaker they should be removed. Speakers having separate pairs of binding posts for the high and low frequency sections of the speaker often come with a metal "jumper" that connects the two red terminals together, and another metal jumper connecting the two black terminals together. For biamping, those jumpers (or any wires that may be making similar connections) should be removed. If they are left in place, yes, you are paralleling.
You are not biwiring, though, which involves the same kinds of connections as biamping at the speaker end (with the jumpers removed), but drives both sets of cables and both sections of the speaker from a single amplifier channel, rather than from separate amplifier channels.
Regards,
-- Al
You are not biwiring, though, which involves the same kinds of connections as biamping at the speaker end (with the jumpers removed), but drives both sets of cables and both sections of the speaker from a single amplifier channel, rather than from separate amplifier channels.
Regards,
-- Al