Niles SI-1260 Installation & Operation Manual page 5

Twelve to Six Channel Configurable Power
Each of the 51-1260's six adjacent output pairs are bridgeable. You can create up to
six 120-watt channels by setting the bridging switch to the "BRIDGED" position.
These switches are located at the top of the rear panel
(see Page
27 figure 16).
Bridging enables you to double the power to specific speaker locations, including
large rooms and outdoor applications.
Freedom from Noise and Cross-Talk
The unique design of the 51-1260's Dual Input BusMatrix'M PC board ensures
extremely high channel-to-channel isolation. 5ignal-to-noise ratio and cross-talk
specifications are comparable to those of mixing consoles used in professional
recording studios. With the 51-1260, the music playing in the living room will not
interfere with the music playing in the den.
Independent Level Controls
Each channel has its own independent volume level control, enabling you to indi-
vidually adjust the setting for up to twelve different speaker locations for optimum
audio performance, providing uniform sound in every room.
Turn-On Modes
The 51-1260 features three selectable turn-on modes: (7) manual turn-on via the front
panel switch, (2) microcontroller enhanced audio sensing which activates only the
appropriate amplifier channels while leaving unused channel pairs off to eliminate
cross talk and (3) a 3-30 volt AC/OC voltage trigger input which enables voltage acti-
vation. Audio 5ense and External Voltage trigger modes enable you to configure the
51-1260 to turn on automatically in any kind of system configuration.
0825 Audio and Voltage Trigger inputs
The 51-1260 incorporates a.OB25 input connector to reduce wiring and installation
time when using Niles Systems Integration Electronics. Niles MultiZone
preamplifiers are equipped with a mating OB25 output connector. This output
connector provides 6 zones of line-level audio signal output and a 12V Trigger
Voltage for reliable amplifier activation.
Designed in the USA
The Niles 51-1260 was designed in the USA by Niles engineers and includes a two
year parts and labor warranty.
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