Extron electronic FF 220T FF220T Setup Guide Continued, NOTE Observe the 70 V or 100 V system

FF220T Setup Guide (Continued)

c.Strip 3/16” (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 7-connector terminal block (on the transformer
side of the cover plate) as indicated on the tap label. See the note
below. The black, negative (-) wire attaches to the “COM” terminal,
and the red, positive (+) wire attaches to the desired terminal tap.		W	NC
See the diagram at right.	W		1W
		1
	W		2W
	2
	4	4W

NOTE: Observe the 70 V or 100 V system
designation as indicated on the tap label.
V	COM	16 W	8 W	4 W	2 W	1 W	NC
70
V
100	COM	NC	16 W	8 W	4 W	2 W	1 W

V

COM 70 V

W	8W
8
W	W
16	16
NC
COM
100

Wiring to a Single Speaker

e.Use a small flat blade screwdriver to tighten the terminal block screws.

f. To wire additional speakers, route speaker wires from the second speaker through the cover plate hole to the transformer side, and twist the black negative (-) wires together and twist the red positive (+) wires together before inserting them into the terminal block. Additional speakers can be daisy chained this way, as shown at right.

8.Connect wires from the transformer to the speaker.

a. Keep the wire strands together by twisting them (do not tin the wires).

V

COM 70 V

8W 16W

NC COM 100

		NC
	W		1W
4W	1			Red Wires
	4W
	W	2W
	2
	8W
W
16

Black Wires	From Amplifier (+)
	To Next Speaker (tap)

From Amplifier (-)

To Next Speaker (com)

b.Connect the red positive (+) wire to the + speaker terminal and connect the black negative (-) wire to the - speaker terminal as shown below.

c.Proceed to step 10.

9.For direct speaker connection, see the block diagram below.

a.Route the wires from the amplifier to the speaker using the same procedure for routing speaker wire (and conduit if applicable) through the transformer cover plate as described in steps 4 through 7b (see the wire gauge table on page 1 for maximum speaker wire sizes). Strip 3/16 inch (5 mm) from the ends of the two speaker wire leads (+ and -) coming from the amplifier. Keep the wire strands together by twisting them (do not tin the wires), and secure the wires to the input terminals of the speaker while observing the correct polarity.

Amplifier

Direct Connection

(bypassing the transformer)

Transformer

FF 220T

b.Connect the red positive (+) wire to the + speaker terminal and connect the black negative (-) wire to the - speaker terminal depending on whether one or two speakers are being connected, as shown below.

	Red Wire
Red Wire	From Amplifier
	To Second Speaker
From Amplifier
	From Amplifier
Black Wire
	To Second Speaker
	Black Wire
One Speaker	Two Speakers

3