SM 28

SpeedMount Two-Way Surface Mount Speakers with 8" Woofer
Key Features
  • Patented, concealed mounting system
  • Includes 0° mounting plate and 10° mounting adapter
  • Designed to accommodate division-of-labor installations and save costs
  • 8" (203 mm) long-throw woofer with dual tuned bass reflex ports
  • 1.1" (28 mm) silk dome tweeter
  • Two versions available for low impedance or 70/100 volt systems:
    - 8 ohm direct operation only
    - 8 ohm direct and 70/100 volt operation
The Extron SM 28
Model Version Description Part #
SM 28 8 ohm - Black, Pair 60-1309-02
SM 28 8 ohm - White, Pair 60-1309-03
SM 28T Transformer - Black, Pair 60-1309-12
SM 28T Transformer - White, Pair 60-1309-13

The Extron SM 28 SpeedMount® Surface Mount Speaker is a two-way speaker with a patented, concealed wall mounting system. It features an 8" (203 mm) woofer with dual tuned ports and a 1.1" (28 mm) tweeter. The SM 28 provides a frequency range from 59 Hz to 22 kHz, and a power rating of 90 watts continuous pink noise, 180 watts continuous program capacity. The Extron-exclusive mounting system is designed to accommodate division-of-labor installations and save costs. The SM 28 is available as an 8 ohm model, and an SM 28T version which can operate in 8 ohm direct as well as 70 volt and 100 volt modes. The SM 28T features a six-position power tap selector for up to 64 watts, which can conveniently be accessed through the grille from outside the speaker.

The innovative mounting system allows the SM 28 to slide onto the mount and lock into place. In the same installation step, the integrated electrical contacts on the speaker automatically mate with the pre‑wired contacts on the mounting plate to speed up and simplify installation. A release on the speaker baffle allows for quick removal from the mount. The release is lockable and hidden, and together with the concealed speaker wiring contacts, helps to deter theft.

To meet a variety of installation needs, the extremely flexible mounting system includes a 0° mounting plate and a 10° mounting adapter. The 0° mounting plate provides the electrical connections and allows the SM 28 to be oriented vertically or horizontally, flush with the wall. When the versatile 10° mounting adapter is added to the mounting plate, the SM 28 can be positioned with a 10° tilt downward, upward, left, or right.

The SM 28 saves time and installation costs for AV system contractors working with low-voltage contractors in a division-of-labor installation. During rough‑in, a low‑voltage contractor installs the mounting system on the wall and terminates the speaker cable to the mount's integrated wiring contacts. Later, the AV system contractor completes the installation by sliding the SM 28 onto the mount.

A pivot mount is available as an optional accessory for the SM 28. It allows for 360° of speaker rotation for maximum flexibility in aiming speakers. Pivot mounts are available in black or white to match the SM 28 speaker.

A Yoke Mount is available as an optional accessory for the SM 28. It allows for vertical or horizontal speaker mounting on a wall, or on a ceiling, with 180° of pivot available in 10° detented steps. The detents allow a consistent pivot angle to be set for multiple speakers. Yoke Mounts are available in black or white to match the SM 28 speaker.

The SM 28 speaker is ideally suited for classrooms, conference rooms, exercise facilities, retail spaces, auditoriums, spaces with raised or exposed ceilings, and other environments where surface mount speakers are desired. It provides accurate voice and detailed music reproduction for a variety of sound reinforcement applications.

The SM 28 is sold in pairs and is available in a black or white finish. It includes a 0° mounting plate and a 10° mounting adapter, and a 5 year parts and labor warranty.

Features

OPTIONAL ACCESSORIES
  SMK P SM 26/28 Pivot Mount Kit for SM 26 and SM 28 Speakers
  Surface Mount Kit Replacement Surface Mount Kit
  Yoke Mount Yoke Mount Kit for SM 26 and SM 28 Speakers
  SPK 14 14 AWG Speaker Cable
  SPK 16 16 AWG Speaker Cable
  SPK 18 18 AWG Speaker Cable
RELATED AMPLIFIERS
  XPA U 358 Eight Channel Low and High Impedance Amplifiers
35 Watts Per Channel
  XPA U 358C Eight Channel Combo Amplifier
35 Watts Per Channel
  XPA U 1004 Four Channel Low and High Impedance Amplifiers
100 Watts Per Channel
  XPA U 1004C Four Channel Combo Amplifier
100 Watts Per Channel
  XPA 1002 Two Channel Low and High Impedance Amplifiers – 100 Watts Per Channel
  XPA 2001 Mono 70/100 V Amplifier - 200 Watts
  XPA 2002 Two Channel Amplifier - 200 Watts Per Channel
  XPA 2003C Three Channel Combo Amplifier - 200 Watts Per Channel
  XPA 2004 Four Channel Amplifier - 200 Watts Per Channel
  XPA 4002 Two Channel Amplifier - 400 Watts Per Channel
  NetPA 1001-70V AT Mono 70 V Audio Power Amplifier with Dante - 100 Watts
  NetPA 502 AT Two Channel Audio Power Amplifier with Dante - 50 Watts Per Channel
RELATED PRODUCTS
  CS 123T Full-Range 70/100 V SpeedMount Ceiling Speaker System
  CS 3T Full-Range Open Back Ceiling Speakers with 70/100 V Transformer
  CS 1226T Plus Two-Way 70/100 V SpeedMount Ceiling Speaker System
  CS 26T Plus Two-Way Open Back Ceiling Speakers with 70/100 V Transformer
  SF 26X Two-Way SoundField Open Back 8 Ohm Ceiling Speakers
  SF 228T Two-Way SoundField Ceiling Tile Speakers with 8" Woofer and 70/100 V Transformer
  FF 120T Full-Range Flat Field Speakers with 1' x 2' Low Profile Enclosure and 70/100 V Transformer
  FF 220T Full-Range Flat Field Speakers with Low Profile Enclosure and 70/100 V Transformer

Specifications

SM 28, SM 28T
Audio/acoustic and electrical
   Speaker type 2-way, full range, indoor surface mount speaker
   Frequency range 59 Hz to 22 kHz, -10 dB, full space (per IEC 60268-5)
   Frequency response 67 Hz to 17.5 kHz, +/- 3 dB full space
   Power capacity 90 W (rms) continuous pink noise (per IEC  60268-5)
180 W (rms) continuous program
   Rated maximum input voltage (MIV) 25.1 V (78.9 W at 8 ohms) per AES2-2012)
   Maximum SPL 108 dB, 1 m (based on MIV)
109 dB, 1 m (linear)
   Nominal sensitivity 87 dB SPL, 1 W, 1 m, full space (per IEC 60268-5, 60 Hz to 20 kHz)
   Nominal coverage angles Horizontal: 105° (1 kHz - 4 kHz, weighted 2 kHz - 4 kHz)
Vertical: 60° (1 kHz - 4 kHz, weighted 2 kHz - 4 kHz)
   Nominal impedance 8 ohms
   Crossover frequency 2.0 kHz
   Rotary switch taps (SM 28T only) 70 V: 64 W, 32 W, 16 W, 8 W, Off, 8 ohms direct
100 V: null, 64 W, 32 W, 16 W, Off, 8 ohms direct
   Woofer (1) 8" (203.2 mm) polypropylene cone
   Tweeter (1) 1.1" (28 mm) silk dome
   Overload protection Full range power limiter protecting the tweeter, woofer, and crossover
   Input connectors 
      Speaker 2 recessed pins (mate to receptacles on mounting plates)
      Mounting plate (1) Euro-style captive screw terminal block, 4 pole
General
   Package 2 speakers (1 pair) with mounting kit package
   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 mountable with included mounting plates
      0° mounting plate Fixed 0°
      10° mounting adapter Fixed 10° up, down, left, or right, based on orientation of adapter
      Yoke mount (optional) Up to 90° upward/downward or left/right, in 10° steps based on orientation of yoke
   Enclosure type Plastic, trapezoidal, with molded grille and bass reflex ports
   Enclosure outer dimensions 
      Speaker only 16.50" H x 11.50" W x 7.28" D
(41.91 cm H x 29.21 cm W x 18.49 cm D)
      With 0° mounting plate 16.50" H x 11.50" W x 7.80" D
(41.91 cm H x 29.21 cm W x 19.81 cm D)
      With 0° mounting plate attached to 10° mounting adapter Orientation: vertical, angled 10° down
16.78" H x 11.50" W x 10.16" D
(42.63 cm H x 29.21 cm W x 25.81 cm D)
   Product weight 
      SM 28
         Speaker only 10.1 lbs (4.6 kg) each
         With 0° mounting plate 10.9 lbs (5.0 kg) each
      SM 28T
         Speaker only 12.0 lbs (5.4 kg) each
         With 0° mounting plate 12.8 lbs (5.8 kg) each
   Shipping weight 
      SM 28  Pair: 30 lbs (14 kg) with mounting kit package
      SM 28T  Pair: 33 lbs (15 kg) with mounting kit package
   Regulatory compliance 
      Safety/EMI CE
      Environmental Complies with the appropriate requirements of RoHS and WEEE.
   Product warranty 5 years parts and labor
    NOTE     All nominal levels are at ±10%.
    NOTE     Specifications are subject to change without notice.
   
   
(4031-D5-060517)
Shipping Dimensions and Weights
    Part # Height Width Depth Weight
    60-1309-02 22.0" (55.9 cm) 22.0" (55.9 cm) 17.0" (43.2 cm) 29.0 lbs (13.15 kg)
    60-1309-03 22.0" (55.9 cm) 22.0" (55.9 cm) 17.0" (43.2 cm) 30.0 lbs (13.61 kg)
    60-1309-12 22.5" (57.2 cm) 13.75" (34.9 cm) 18.25" (46.4 cm) 29.0 lbs (13.15 kg)
    60-1309-13 22.75" (57.8 cm) 13.75" (34.9 cm) 18.25" (46.4 cm) 29.35 lbs (13.31 kg)

Diagram


Panel Drawing

Panel Drawing
© 2019 Extron. Specifications are subject to change without notice.