SM 28

Mã sản phẩm: SM 28

SpeedMount Two-Way Surface Mount Speakers with 8" Woofer

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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.

 

Features

  • Patented, concealed mounting system — One installation step connects the speaker to the wiring contacts, and secures it into place.
  • Includes 0° mounting plate and 10° mounting adapter — Four position 10° mounting adapter attaches to 0° mounting plate, and provides flexibility for vertical or horizontal speaker installation with 10° of tilt downward, upward, left, or right.
  • 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
  • Convenient six-position, through-the-grille power tap selector on the SM 28T:
    - 8 ohm direct
    - 70 volt: 64, 32, 16, 8 watt, and Off selectable
    - 100 volt: null, 64, 32, 16 watt, and Off selectable
  • Optional pivot mount allows for 360° of speaker rotation. Part # 70-978-02 and 70-978-03
  • Optional Yoke Mount allows 180° of speaker pivot in 10° detented steps, part #70‑994‑02 and 70‑994‑03
  • Frequency range: 59 Hz to 22 kHz
  • 90 watts continuous pink noise
    180 watts continuous program
  • Internal driver overload protection
  • Hidden locking speaker release mechanism
  • Mounting plate provides cable raceway access for surface-mounted wiring applications
  • Black or white high-impact enclosure
  • Dimensions with 0° mounting plate: 16.5" H x 11.5" W x 7.8" D (41.91 cm H x 29.21 cm W x 19.81 cm D)
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.

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