Orion 4004 Owner's Manual page 10

Tri-Mode Six Channel Configuration
Lowest recommended impedance is 2W stereo and 4W bridged mono.
Front and rear outputs must be set for full range operation.
Passive crossovers must be used on all components and frequencies must not overlap.
WARNING! Failure to observe these requirements may result in damage to the amplifier.
©2004 Directed Electronics, Inc.
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