INSTALLATION CONSIDERATIONS
8
Cable and Wire
It will be easier to reconfigure or troubleshoot your system in the future if you
label the cables and wires for their destination or source, rather than which ter-
minal of the SI-245 they are connected to.
The SI-245 connects to your preamp source via shielded line level audio cables
with RCA phono plugs. Use high quality cables with your Niles amplifier for the
lowest possible noise and best overall performance. Your Niles dealer can rec-
ommend the proper cable.
The SI-245 connects to your speakers using 2 conductor speaker wire. For most
applications, we recommend you use 16 or 18 gauge wire. For wiring runs longer
than 80 feet, we recommend 14 gauge wire. The binding posts of the
SI-245 will accommodate up to 12 gauge wire. Larger sizes can be accommodated
by attaching banana plugs to the wire. Note that the binding posts accept dual
banana or single banana connectors.
TECH TIP
Wire size is expressed by its AWG (American
Wire Gauge) number. The lower the number, the
larger the wire, i.e. twelve AWG is physically larg-
er than fourteen AWG.
INSTALLATION
Setting the Turn-On Mode Switch
The SI-245 has three turn-on modes. Select the mode you wish to use by sliding
the mode switch. See Installation Considerations on page 6 for more information
about each of the turn-on modes.
Control Output
This terminal provides a 12v DC signal suit-
able for triggering Niles automated switchers,
some motorized screens, some electric curtain
controls, etc. The trigger voltage is present
only when the amplifier is active or "on".
When the amplifier turns "off", the 12 volt sig-
nal is off.
9 Setting The Turn-On Mode Switch
9 Control Output
10 Speaker Wire Connections
13 Line Level Audio Inputs
13 Cascade Audio Outputs
14 AC Power plug
17 Rail Fuse Holders
STEP
1. Check the requirements of the device
you want to control.
2. Connect the 3.5mm Jack to the
control output maintaining proper
polarity (tip = +)
DESCRIPTION
The control output has a maximum
current capability of 12vDC 150 mA.
Niles makes an accessory cable
plug FG00724.
Using the
3.5 mm jack.
Slide the switch with your fingernail or a
1/8” slotted screwdriver blade.
11
INSTALLATION
DS00284BMY-SI-245.qxp 6/27/05 2:14 PM Page 11