The "Front / BI-WIRING B" terminals.
Please check your Denon 1700 manual (I only found the spec sheet online) to ensure your speaker selector/speakers impedance is compatible.
The concern is if simultaneously powering the four main zone speakers and the "bi-wired" selector speakers the combination will not overtax the amplifier.
Bi-wiring should imply separate amplifiers and be just fine. However, sometimes manufacturers do nutty things for no apparent reason.
BTW what speaker selector are you using and does it have "impedance protection" as either a built-in circuit or selectable with a button.
Cheers,
XEagleDriver
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