Extron electronic SI 26 User Manual

Extron Electronics, USA

1230 South Lewis Street
Anaheim, CA 92805
USA

714.491.1500
Fax [phone]

Extron Electronics, Europe

Beeldschermweg 6C
3821 AH Amersfoort
The Netherlands
+31.33.453.4040
Fax [phone]

Extron Electronics, Asia

135 Joo Seng Road, #04-01
PM Industrial Building
Singapore 368363
+65.6383.4400
Fax [phone]

Extron Electronics, Japan

Kyodo Building
16 Ichibancho
Chiyoda-ku, Tokyo 102-0082 Japan
+81.3.3511.7655
Fax [phone]

www.extron.com

User’s Manual

DRAFT COPY

© 2006 Extron Electronics. All rights reserved.

SI 26 and SI 28

Surface Mount Speakers

68-1164-01

Rev. Ax1

05 06

Features

1

2

3

4

5

6

7

8

9

10

11

Dimensions: SI 26: 13.0" H x 8.5" W x 6.75" D

Dual tuned bass reflex ports

a

1" ferrofluid-cooled, aluminum dome tweeter

b

Front locking access (allows for speaker position adjustment)

c

6.5" (SI 26) or 8" (SI 28) long-throw woofer

d

Grill and enclosure may be painted to match environment

e

Weather resistant construction

f

Push down spring terminals

g
h

Back cover for use when speakers are not wall mounted

i

Allen hex tool

j

Extron logo (fits in grill to cover locking port access)

k

8 ohm nominal impedance

l
m
n

Internal driver overload protection circuit

o

i

SI 26 and SI 28 Speakers • Features

Figure 1 — Speaker Features

(33.0 cm H x 21.6 cm W x 17.1 cm D)
SI 28: 16.5" H x 11.5" W x 8.6" D
(41.9 cm H x 29.2 cm W x 21.9 cm D)

Wall mount assembly with unique V-Lock™ (Patent Pending)
system included

75 watts (SI 26) or 90 watts (SI 28) continuous pink noise

150 watts (SI 26) or 180 watts (SI 28) continuous program

N For items 12 through 15, see "Specifications", page 7

of this manual.

Introduction

About the SI 26 and SI 28 Speakers

The Extron System INTEGRATOR™ SI 26 and SI 28 two-way
surface mount speakers are ideally suited for classrooms,
conference rooms, and boardrooms. With a weather resistant
construction, they are also suitable for outdoor environments.

• SI 26 features a 6.5" long-throw woofer, 1" tweeter, 150 watts
continuous program capacity, and frequency response from 70
Hz to 20 kHz.

• SI 28 features an 8" long-throw woofer, 1" tweeter, 180 watts
continuous program capacity, and frequency response from 50
Hz to 20 kHz.

Figure 1 — Extron SI surface speakers

N Extron recommends that the wiring installation is

performed by a professional audio equipment installer.

C

Use cable clamps to hold the cables in place for

strain relief. Trim back/insulate exposed cable
shields with heat shrink to reduce the chance of short
circuits

SI 26 and SI 28 Speakers • Introduction

1

Installation

Conference Room

Extron
SI 28

Surface-mount Speakers

Fasten the
wall mount plate
to the vertical
surface.

Rotate This
Section 90°

Alternative
pilot dimples.

Installing the SI 26 or SI 28 Speaker

The SI 26 or SI 28 can be mounted on a surface, such as a wall
or post, or mounted in a bookcase, or under a shelf, and can be
used with any Extron product with power amps.

Figure 3 — Rotating and mounting the wall mount

assembly

3. Mark the location of the wall mount plates three center

holes on the stud line and drill the pilot holes.

N

For some surfaces the four alternative pilot dimples

(see figure 4) may be used to secure the assembly in place.
Mark and drill as appropriate

Desk top or bookshelf applications

Wall mounting

2

SI 26 and SI 28 Speakers • Introduction

Figure 2 — Surface speaker application

1. For quick installation on a desk top or bookshelf, simply
place on a desk, shelf or other flat surfaces as desired.

N Do not detach the back cover.

2. Route the speaker wire (Extron recommends using
12-18 AWG) to the speakers.

3. Strip the wire and connect the speakers as described on
page 6.

1. If mounting to drywall, use a stud locator to locate the
studs in the wall. Mark their position.

2. Remove the wall mount assembly from the box and
loosen the hex cap screw (by turning it counter clockwise)
with the allen hex tool supplied. Rotate the front section
approximately 90 degrees to the rear mounting plate (see
figure 3) and tighten the hex cap screw, locking the plate in
position. This will make the next steps easier to perform.

Figure 4 — Alternative pilot dimples on the speaker

bracket

4. Mark the wall where the wire will pass through the plate,
and cut a small access hole large enough for the wire to
pass through without snagging. If the stud is wider than
the plates access hole, then cut the hole in the wall to the
left or right and directly alongside the stud (see figure 5).
Before cutting it, make sure the plate will cover the hole
when it is finally installed.

SI 26 and SI 28 Speakers • Installation

3

Installation, cont’d

Cut access
hole alongside
stud and feed
wires though
hole.

Wall Stud

Wall Mount Assembly

Wall

Approximate Stud
line behind wall

Bend wire to line
up with access
hole in plate.

Screw

Pass the wires
through the plate
access hole.

Slide the speaker onto the
wall mount assembly.

Stage

Box
bracket

Turn clockwise
to tighten.

Figure 5 — Install wall mount assembly

N Extron recommends that the wiring installation is

performed by a professional audio equipment installer.

5. Using compatible speaker wire (Extron recommends using
12-18 AWG), route the wire from the audio source to the SI
speaker location by the most convenient and safe route. If
the wiring is to remain hidden behind the wall, follow the
stud to where the small access hole has been cut, and feed
about two feet of wire out through the hole into the room.
If necessary, bend the wire to align with the plate (see
figure 5). Secure the wire at various places to the stud, but
allow enough freedom of movement near to the hole for
connection to the speaker

6. Pull sufficient wire up through the holes in the rear plate
(see figure 6) to allow ease of connection to the speaker
after installation.

8. When the assembly is securely in place, loosen the hex
cap screw (turn counter-clockwise) and rotate the front
section back into a vertical position with the hex cap screw
at the top. Using the allen hex tool, turn the hex cap screw
clockwise to tighten.

9. Remove the cover from the back of a speaker and carefully
slide the speaker box bracket down into the V lock groove
until it locks into place (see figure 7).

Figure 7 — Install speaker onto the wall mount
assembly

10. To adjust the angle of the speaker, carefully remove the
Extron logo on the front of the speaker to expose the front
locking access (see Figure 1, Item 3, for location). Insert the
allen hex tool into the locking access, and slightly loosen
the hex cap screw. Adjust the speaker to the desired angle
(see figure 8), and torque the cap screw down clockwise
until snug. The speaker will sit securely in the desired
position. Install the Extron logo.

N The Extron logo can be fitted either horizontally or

vertically.

4

SI 26 and SI 28 Speakers • Installation

Figure 6 — Pass the wire through the plate

7. Place the wall mount assembly against the wall, aligning
the plate holes with those drilled, and secure with
appropriate hardware.

Figure 8 — Adjust speaker and lock in place

SI 26 and SI 28 Speakers • Installation

5

Installation, cont’d

Twist the bared wire

Strip approx. 15 mm (5/8”)

Push down on the spring terminals at the
back of the speaker, and insert the wires.
Release the springs to secure.

IN PUT

Extron

Extron

positive wire

negative
wire

Specifications

11. Repeat steps 1-10 for the second speaker.

12. When both speakers are in place, carefully pull enough

wire to reach up to the terminals at the back of the speaker
and strip the ends of the wire approximately 5/8" (15 mm),
for connection. . Twist the bared ends of each separate wire
so that they will hold firmly in the connector.

Figure 9 — Strip the wire and twist the bared ends

13. Press down on the spring loaded terminals to open the
holes at the top. Observing the correct polarity, (, wire
to , terminal and . wire to . terminal) insert the
twisted wires into the relevant open holes (see figure 10)
and release the springs to secure. Push any loose wire
through the plate on the wall mount assembly and back
into the wall.

C Do not connect the speaker terminals to one

6

Figure 10 — Insert wiring into the terminals

14. Turn on the audio source and any associated devices.
Follow the manufacturers instructions to adjust the source
and device settings as desired to get the optimum audio
output for your speaker application. If necessary, re-adjust
the angle of the speaker (repeat step 10) to get the best
audio area coverage.

SI 26 and SI 28 Speakers • Specifications

channel in parallel (together) with those of the other
channel.

Audio/acoustic and electrical

Speaker type ................................... 2-way, indoor/outdoor surface mount

Frequency range ............................ SI 26 70 Hz to 20 kHz, -10 dB, half space

SI 28 50 Hz to 20 kHz, -10 dB, half space

Power capacity .............................. SI 26 150 W continuous program

75 W continuous pink noise
SI 28 180 W continuous program

90 W continuous pink noise

Nominal sensitivity ....................... 90 dB SPL, 1W, 1m, half space

Nominal impedance ..................... 8 ohms

Crossover frequency ..................... SI 26 2.3 kHz

SI 28 2.1 kHz

Woofer ............................................. SI 26 6.5" (165 mm) polypropylene cone

SI 28 8.0" (203 mm) polypropylene cone

Tweeter ........................................... 1.0" (25 mm) aluminum dome

Overload protection ...................... Full range power limiter, protecting the

tweeter, woofer, and crossover

Input connector ............................. 2 pin spring terminals

General

Package ........................................... 2 speakers (1 pair)

Temperature/humidity Storage: -40 to +158 °F (-40 to +70° C) / 10% to 90%,

noncondensing

Operating: +32 to +122 °F (0 to +50° C) /

10% to 90%, noncondensing

Mounting ........................................ Wall mount assembly with V-lock (patent

pending)

N

Enclosure type ............................... Plastic, trapezoidal, with metal grille and

Enclosure outer dimensions ........ SI 26: 13.0" H x 8.5" W x 6.75" D

Product weight .............................. SI 26 11 lbs (5 kg) each

Shipping weight ........................... SI 26 30 lbs (14 kg) per pair with

Wall mount assembly can be angled up to 20° upward,

35° downward, 30° to the left, and 30° to the right.

bass reflex ports

(33.0 cm H x 21.6 cm W x 17.1 cm D)

SI 28: 16.5" H x 11.5" W x 8.6" D

(41.9 cm H x 29.2 cm W x 21.9 cm D)

SI 28 15 lbs (6.8 kg) each

mounting kit package

SI 28 40 lbs (19 kg) per pair with

mounting kit package

SI 26 and SI 28 Speakers • Specifications

7

Specifications, cont'd

P
a

r
t
N

o
.

X
X

X

­X

X
X

­0

1

Inst

a

ll 20

6W

C

eiling

S
peaker

3
3

­X
X

X
X

­0
1

R
E

V
.

Thick Single Wall
Packing

Bottom Foam

Wall Mount
Assemblies

Speakers

Back Covers

Allen Hex Tool

Top Foam

Product Label

Warranty ......................................... 5 years parts and labor

N

N

All nominal levels are at ±10%.

Specifications are subject to change without notice.

Packaging information

Extron’s Warranty

Extron Electronics warrants this product against defects in materials and workmanship
for a period of five years from the date of purchase. In the event of malfunction during
the warranty period attributable directly to faulty workmanship and/or materials, Extron
Electronics will, at its option, repair or replace said products or components, to whatever
extent it shall deem necessary to restore said product to proper operating condition,
provided that it is returned within the warranty period, with proof of purchase and
description of malfunction to:

USA, Canada, South America, Europe, Africa, and the Middle East:
and Central America: Extron Electronics, Europe

Extron Electronics Beeldschermweg 6C
1001 East Ball Road 3821 AH Amersfoort
Anaheim, CA 92805, USA The Netherlands

Asia: Japan:

Extron Electronics, Asia Extron Electronics, Japan
135 Joo Seng Road, #04-01 Kyodo Building
PM Industrial Bldg. 16 Ichibancho
Singapore 368363 Chiyoda-ku, Tokyo 102-0082
Japan

This Limited Warranty does not apply if the fault has been caused by misuse, improper
handling care, electrical or mechanical abuse, abnormal operating conditions or non­Extron authorized modification to the product.

If it has been determined that the product is defective, please call Extron and ask for an
Applications Engineer at [phone] (USA), 31.33.453.4040 (Europe), 65.6383.4400
(Asia), or 81.3.3511.7655 (Japan) to receive an RA# (Return Authorization number). This
will begin the repair process as quickly as possible.

Units must be returned insured, with shipping charges prepaid. If not insured, you
assume the risk of loss or damage during shipment. Returned units must include the
serial number and a description of the problem, as well as the name of the person to
contact in case there are any questions.

Extron Electronics makes no further warranties either expressed or implied with respect
to the product and its quality, performance, merchantability, or fitness for any particular
use. In no event will Extron Electronics be liable for direct, indirect, or consequential
damages resulting from any defect in this product even if Extron Electronics has been
advised of such damage

8

Figure 9 — Packaging for SI 26 and SI 28

SI 26 and SI 28 Speakers • Specifications