Extron electronics SM 26 User manual

1
Product Category
SM 26 • Setup Guide
This setup guide contains installation information about the Extron SM 26 speaker.
Installing the Speaker Mounting Plate
The SM 26 speaker comes with a at mounting plate and an adapter for positioning the speaker 10° up, down, left, or right.
• 0° mounting plate — The at (0°) mounting plate allows the speaker to be mounted at on a suitable surface.
• 10° mounting adapter — The 10° mounting adapter allows the speaker to be installed at a 10 degree angle so that the
speaker can be pointed up, down, left, or right from an elevated position by rotating the adapter.
The mounting plate can be installed vertically or horizontally as shown below right.
0° Mounting Plate
10° Mounting Adapter
NOTE: Observe all applicable building codes and
local ordinances when installing the speaker.
Mounting to a Wall Stud
1. Locate the wall stud where the mounting plate will be installed.
2. If using the 10° mounting adapter, position the adapter to the wall stud according to how the speaker will be angled and mark
the positions of the pilot holes. See the gure below right for mounting hole locations.
If not using the adapter, position the mounting plate against the wall. The #26 arrow molded into the mounting plate indicates
the vertical midpoint of the SM 26 speaker when it is mounted on a wall stud. While positioning the mounting plate on the
wall, mark the location of two pilot holes using the holes indicated below.
33-0000-01Rev.Ax1
IN
–
LOOP
–
IN
+
LOOP
+
SM26 Speaker
Stud
Mounting
Points
Horizontal Mounting
Catch Tab
Vertical Mounting
Mounting
Holes

2
SM 26 • Setup Guide (Continued)
NOTE: A speaker wire access hole (see the following gures) must also be cut in the wall, so mark that hole location now
with the mounting plate positioned on the wall while ensuring that the wall stud does not interfere with the wire
routing and that the mounting plate hides the access hole.
3. Drill the mounting plate pilot holes and cut the speaker wire access hole, as previously marked.
4. Install the speaker cables into the wall before installing the speaker mounting plate. Leave enough slack in the cable.
5. If using the 10° mounting adapter, route the speaker cable through the adapter and 0° mounting plate, and attach the
adapter to the 0° mounting plate using the four included screws and washers, as shown below.
6. Route the speaker cable through the rear of the mounting plate and attach the wire ends to the quick connect contacts using
a small screwdriver, as shown below. Be sure to observe the correct polarity.
7. Attach the mounting plate to the wall, as shown below.
NOTE: Figures below refer to steps 5 through 7.
10° Mounting
Adapter
0° Mounting Plate
(4) 4-40 x 3/16"
Screws
Quick Connect Contacts
Mounting Screws
Red Wire (+) from Amplifier Black Wire (-) from Amplifier
Red Wire (+) from Amplifier/Previous Speaker Red Wire (+) to Next Speaker Black Wire (-) from Amplifier/Previous Speaker Black Wire (-) to Next Speaker
LOOPIN INLOOP LOOPIN INLOOP
Number of Wires
per Connection Point Maximum Wire Gauge
1 12 AWG
2 16 AWG
4 18 AWG
Wire Gauge Table
Loop-through Connection
Single speaker Connection
Number of Wires
per Connection Point Maximum Wire Gauge
1 12 AWG
2 16 AWG
4 18 AWG
Wire Gauge Table

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Product Category
NOTE: If surface mounting, route
wires through alternate
access points.
Attaching a Secondary Support Cable
If a secondary support cable is being attached, attach the cable to
the eye bolt, as shown on the right. The cable end should be properly
swaged.
Attaching the Speaker to the Mounting Plate
ATTENTION: The key must be rotated to the
unlocked position before the speaker is attached
to the mounting plate. Failure to place the speaker
in the unlocked position will result in damage to
the speaker lock mechanism should an attempt be
made to mount the speaker. By default, the
SM 26 speaker is shipped unlocked (see “Using
the Security Key to Lock and Unlock the
Speaker” on the next page).
NOTE: If a secondary attachment point is being
used, see the “Attaching a Secondary Support
Cable” section above for installation details before
proceeding further.
Position the rear mounting slot of the speaker above the
catch tab of the mounting plate, then slide the speaker down
into the mounting plate until a click is heard indicating that the
speaker is secured in place (see gure on the right). When
properly seated, the speaker connections are automatically made.
NOTE: If mounting the SM 26 with the yoke mount, refer to the Yoke Mount Setup Guide.
ATTENTION: Use the appropriate mounting screws. The screw heads must not protrude
more than 0.27 inch ( 7 mm) above the screw holes in the mounting plate (see the gure
on the left). If the screw head protrudes too far above the mounting plate surface, damage
to the speaker may occur when the speaker is attached.
0° Mounting Plate
Alternate Access Point Alternate Access Points
10° Mounting Adapter
33-0000-01 Rev. Ax1
IN
–
LOOP
–
IN
+
LOOP
+
0.47”
(12 mm)
0.27”
(7 mm)
Good
Bad
Secondary
Attachment
Cable
Anchor this end to a
suitable secure point.
Attach cable here
and secure.
Catch Tab

4
68-2164-50
Rev. A
03 13
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Setting the Tap Selector Switch
(SM 26T model only)
For the SM 26T model, insert a small screwdriver through the upper left portion of the front grille, as shown below, to adjust the
tap selector switch to the desired setting.
Using the Security Key to Lock and Unlock the Speaker
Insert the key into the center of the speaker grille and turn the key, as needed, so that the speaker is in the unlocked position (see
the gure above). There are three small raised “dimples” (see the gure below)on the grille surface that surrounds the keyhole.
Repeat this procedure, but set the key to the locked position to lock the speaker.
Removing the Speaker from the Mounting Plate
To remove the speaker from the mounting plate, you must unlatch the
locking mechanism.
1. Insert the security key into the keyhole of the speaker grille (see the previous
section) and turn the key to the unlock position.
2. Remove the security key.
3. Apply pressure to the grille with your nger over the “dimpled” keyhole to
unlatch the speaker from the mounting plate while lifting up on the speaker
(see gure on the right).
Press to Release
Unlocked
Twist to
Lock/Unlock
Unlocked Locked
8Ω
70
100
8Ω
Tap Indicator
for 70 volt
Tap Indicator
for 100 volt