Extron Electronics FF 220T User Guide - Manual (Page 11)

b. Route the two wires from the amplifier through the cover plate hole to the
transformer side.
c. Strip 3/16 inch (5 mm) from the wire ends and keep the wire end strands together
by twisting them. Do not tin the wires.
d. Secure the wires to the appropriate taps on the captive screw connectors of the
seven‑connector terminal block (on the transformer side of the cover plate) as
indicated on the tap label. See the note below.
NOTE: Observe the 70 V or 100 V system designation as indicated on the
tap label.
NC 1 W 2 W 4 W 8 W 16 W COM
70
V
100
V
COM NC 16 W 8 W 4 W 2 W 1 W
When wiring to a single speaker, the black negative (‑) wire attaches to the “COM”
terminal, and the red positive (+) wire attaches to the desired terminal tap. See
below.
NC
1 W
2 W
4 W
16 W
COM 70 V
100
V COM
NC
16 W
8 W
4 W
2 W
1 W
8 W
Red Wire
Black Wire
From Amplifier (+)
From Amplifier (-)
Figure 7. Wiring to a Single Speaker
e. Use a small flat blade screwdriver to tighten the terminal block screws.
f. To wire additional speakers, route the speaker wires from the second speaker
through the cover plate hole to the transformer side. Twist the black negative (‑)
wires together and the red positive (+) wires together before inserting them into the
terminal block. Additional speakers can be daisy‑chained this way. See below.
NC
1 W
2 W
4 W
16 W
COM 70 V
100
V COM
NC
16 W
8 W
4 W
2 W
1 W
8 W
Red Wires
Black Wires From Amplifier (+)
To Next Speaker (terminal tap)
From Amplifier (-)
To Next Speaker (COM terminal)
Figure 8. Wiring to Additional Speakers
FF 220T User Guide • Installation 7