Page 14 MZC-88 Installation Instructions
18. L & R PRE-OUT — Two, RCA jacks, one pair per Zone, provide left and right line-level audio outputs for driving exter-
nal high-power/audiophile two-channel amplifiers in large or outdoor zones or a critical listening zone, or driving a
multi-channel amplifier for additional rooms, (sub-zone expansion) where needed.
19. IR OUT (Zone) — One, 3.5mm mini jack, one per zone, provides dedicated Zone IR output for exclusive control of a
specific zone component. (i.e., a dedicated satellite receiver or DVD player, that cannot be controlled from any other
zones).
POLARITY: TIP=SIGNAL; SLEEVE=GND.
20. L & R SPEAKERS — Eight, removable screw-down connectors, one terminal per zone, provide quick connection of the
internal amplifiers to Zone stereo speaker pairs.
WIRE GAUGE: 14 to 28 AWG.
WARNING: The power amplifiers in the MZC-88 use Bridged (BTL) outputs. Speaker connections must be completely
separate for each channel and have NO common ground connections through any connected Speaker Selectors, VCs,
Test Equipment, etc. Failure to observe this may cause damage and void the warranty.
21. VIDEO OUTPUT — Eight, F-type terminals, one per zone, provide a dedicated composite video output for each zone.
75 ohm outputs provide matched line impedance for high quality video over RG6 cable for lengths up to 500 feet.
22. VC/NVC — Eight, two-position switches, one per zone, switch the PRE-OUT jacks to
VC - internal Volume Control (vari-
able, zone volume controlled by keypads or IR remote) or
NVC - No Volume Control (fixed, zone volume controlled by
in-wall volume control or volume control on an external device such as an A/V Receiver). In either case, the tone control
action remains available for room “EQ” settings.
23.
IEC TYPE AC MAINS RECEPTACLE AND FUSE — One, Standard IEC 3-conductor AC line cord receptacle, connects to
included AC power cord. Also houses the rear panel replaceable AC mains fuse (T6.3AL 250V).
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