So well i have my Akai am-69 and its a very lovely 4 stereo channel amp that dose NOT support bi amplifying and i was thinking...
It is
not a "4 channel stereo channel amp", there are only two channels with 4 sets of binding posts for people who wants to connect two pairs of speakers. In that case the speakers must have impedance of 8 ohms minimum.
In you case, if you connect the tweeter to A and woofer to B and use A+B, you will be bi-wiring and not bi-amping. You can try it to find out if there is a difference but it
won't make the audible distortion go away.
Oops.. TLSG beat me to it.