SoundTube SM500I-II
5.25" Coaxial Surface Mount Speaker


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The SM500I-II's BroadBeam® waveguide technology delivers a consistent dispersion pattern up to 10 kHz for maximum coverage area per speaker. One 5.25 inch (133 mm) polypropylene woofer and one 1.0" (25 mm) convex titanium tweeter with FerroFluid™ cooling. 86.0 dB average sensitivity offers high output capabilities and reduced amplification costs. Includes stainless steel screws and weatherized components for indoor and outdoor applications. Easy access, six-position selectable tap switch for 25-, 70.7- and 100-volt applications with transformer bypass allow the SM500i-II to be aimed anywhere within the installation space. Low profile enclosure design keeps the speaker close to the wall. UL 1480 (UEAY) planned. Included Accessories: Safety cable with speaker mounting bolt, Euroblock connector, wall mount bracket and terminal weather boot.


  • Frequency Response (-3 dB): 86 Hz – 22 kHz
  • Low Frequency(-10 dB): 60 Hz – 22 kHz
  • Sensitivity: 86.0 dB
  • Power Capacity RMS: 75 W
  • Max SPL dB @ 1 M: 102 dB
  • Nominal Impedance: 4 ohm
  • Transformer Options: 25 / 70.7 / 100 Volt option with a 4 Ohm direct
  • Tweeter: 1 in / 25 mm Convex Aluminum w/BroadBeam® Waveguide
  • Woofer: 5.25 in / 130 mm Poly
  • Connections: 4-pin Euroblock
  • Dimmensions: 11.40"(H) x 8.36"(W) x 10.48"(D)
  • Weight: 9.5 lbs
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