Marantz NR1604 Owner's Manual page 92

Speaker connection
Connecting front speakers with a bi-amp connection
Some audiophile loudspeakers can be connected to an amplifier with two separate amp-to-speaker
connections per each speaker. One amplifier channel's output is hooked up to the speaker's bass driver
(woofer), while the other amplifier drives the upper range transducers (tweeter, or in some cases midrange
and tweeter). This connection method has one amplifier channel driving one half of the bi-amp speaker,
and avoids electrical interference between the speaker's bass and treble drivers and the driving amplifier
channels. You can assign 4 amp channels to connect to one pair of bi-amp capable speakers. Bi-amp
capable speakers always have two sets of speaker input connector pairs, one for the bass range and one
for the treble range. If you're unsure about whether or not your speakers are bi-amp capable, consult the
owner's manual that came with the speakers.
In this case, set "Assign Mode" to "Bi-AMP" in steps 3 to 5 for "Set up "Amp Assign"" (vpage 91).
For multi-channel playback, connect front, center, and surround speakers and a subwoofer.
NOTE
• For speaker cable connections, see page 82.
• For speaker impedance, see page 81.
• When making bi-amp connections, be sure to remove the short-circuiting plate or wire between the
speaker's woofer and tweeter terminals.
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