Extron electronics SI 3C LP User Manual Download Page 1

Frame Construction Ceiling Installation

1

Take the cutout template from the packaging box and
punch out along the larger perforated circle.  Place the 
cutout template against the ceiling and trace along the inside
circle.  Carefully cut out the ceiling material along the circle.

3

Cut material.

SI 3C LP

Ceiling Speaker

a.  Remove the top terminal cover (see the illlustration in 
     step 

3f) by loosening (do not remove) both top screws, 

     sliding the top terminal cover away from the screws, and
     removing the cover, as shown here.

68-1469-01 

Rev. B

11 07

User’s Guide

2

The side terminal cover, as shown in step 

3f, must first

be removed before wiring the speaker.
Loosen the single top screw of the side terminal cover and 
pull the side terminal cover straight out.  See the illustration
below.

Side View of Input Terminal

Top Terminal
Cover

Loosen
screw.

Loosen
two screws.

c.  Insert the conduit(s) into the knockout opening(s) and 
     secure the conduit to the cover with the locking nut.

d.  Pull the speaker wires from the conduit, strip 0.2

"

 (5 mm) 

     from the wire ends (

do not tin the wires

), and secure the 

     wires into the 4-pole captive screw connector.  
     
     To connect speakers in parallel, see the 
     wiring diagram below.

e.  Bring the speaker up to the bottom of the hole in the 
     ceiling.

f.   Plug the wired connector from step 3d into the speaker’s 
     audio input connector.  Secure the top terminal cover 
     with the two top screws that were loosened in step 

3a

     hook the side terminal cover to the top terminal cover; and
     secure the side terminal cover in place with the screw that 
     was loosened in step 

2.

  

1

Power Amplifier

Speaker 1

Speaker 2

Trace template.

Side Terminal
Cover

N  

Installation in a plenum-rated environment 

               requires a wire gauge of 14 AWG to 18 AWG. 

Top Terminal
Cover

Side Terminal
Cover

See NOTE below.

b.  Remove the knockout(s) from the top terminal cover 
     depending on the direction from which the conduit(s) will  
     be entering the cover.

Front View of Input Terminal

4-pole Captive

Screw Connector

LOOP IN

LOOP

IN

33-1351-01

Re
v. B

N  

Installation in a plenum-rated environment 

               requires a wire gauge of 14 AWG to 18 AWG. 

Knockout

4-pole Captive

Screw Connector

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