Speaker Connections - OEM IW-SYS3 Owner's Manual

Speaker Connections

The IW-SYS3 has two internal stereo amplifiers and two-pairs of outputs for speakers, Main Speaker Pair
A (BASE) & Auxiliary Speaker Pair B. Speaker Pair A is the primary speaker output and it is best used for
speakers installed close to the system. Auxiliary Speaker Pair B is an independent speaker output for
providing sound to another location(s). Speaker Pair A & Speaker Pair B provide identical output but with
independent volume adjustments
recommend 18 gauge minimum wire size be used for speaker connection. 16 gauge, which is larger, is preferable.
The IW-SYS3 will handle up to four 8-ohm speakers per channel.
To connect a speaker to the system:
1. Strip back approximately ½" (13mm) of insulation from each of the conductors of the speaker cable.
2. Ensure the terminal latches are open, (flipped away from the hole).
3. Insert the conductors into the appropriate holes ensuring that proper polarity is maintained, "+" wire to the
"+" terminal and "-" wire to the "-" terminal. Speaker pairs that are wired out of phase will exhibit reduced or
little bass output.
4. Flip the latch toward the wire to secure it.
5. Repeat the above steps for the other speakers in the system.
When multiple pairs of speakers are connected to a single output, the wires should be connected in parallel
(not series). The wires that share a connection may often be twisted together and inserted together in the same
hole. Should the combined wires be too large then they can be connected together to a pigtail with wire nuts.
The pigtail should then be connected to the amplifier outputs.
Note: If you use multiple speakers, the speakers should be connected in parallel to maintain an impedance
of not less than 2 ohms. It is common to have Autoformer-type volume controls installed in each room where
there is a pair of speakers. The autoformer controls permit the speaker volume to be adjusted independently
in each room. If the volume controls have impedance multiplication capability, it is recommended that they be
set to 1X (unity multiplication) except where the combined load impedance on the amplifier is less than 2 ohms.
This scenario is unlikely except in rare installations, such as a commercial installation where light background
music is desired throughout multiple rooms.
Contact a professional if you lack the expertise and are not comfortable with the installation process.
IW-SYS3:
In-Wall Audio System
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, and Speaker Pair B also provides paging output, (PAGE button
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Rev. C
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). We
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AM / FM / CD / AUX / USB AM / FM / CD / AUX / USB