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SoundTube - HP129a - 12" Open Ceiling Speaker (Single)

SoundTube - HP129a - 12" Open Ceiling Speaker (Single)

The HP129a is a 12-inch, coaxial, hanging speaker with a surface-mount option and a proprietary BroadBeamHP® waveguide. Engineered to deliver true high-SPL performance, the HP129a incorporates a 12-inch treated fiber cone and one 35 mm (1.38 in.) Mylar compression driver with a professional-grade electro-acoustic sub-assembly. The result is a pendant-mount speaker with maximum efficiency (97 dB 1W/1M) and an extended frequency response from 73 Hz 19 kHz (-10 dB).

For lasting performance, the enclosure is made from injection-molded, glass-filled ABS. Mounting hardware is included and features hanging and safety cables, Euroblock connector and terminal weather boot.

For easy ordering, stocking and installation, every speaker is equipped with a five-position tap switch for 25-, 70.7- and 100-volt applications with a transformer bypass setting. For surface-mount applications, SoundTube offers a surface mount adapter (AC-HP-SM129).


  • Patented BroadBeamHP® coverage pattern providing smooth response and maximum SPL across the audio spectrum.
  • One 12 inch (305 mm) treated fiber cone with a treated cloth surround and one 1.375 inch (35 mm) Mylar compression driver with waveguide.
  • Weatherized components for indoor/ outdoor applications and a ported enclosure for added bass response (down to 73 Hz, - 10 dB).
  • High-SPL, high-efficiency system for the sound reinforcement and PA markets.
  • Easy-access, five-position tap switch for 25/70.7/100-volt applications with transformer bypass position.
  • Reduced amplification costs and maximum efficiency (97 dB sensitivity), with 8-ohm impedance.
  • UL 1480 (UEAY) approved.
  • High quality black or white painted finish.
  • Included accessories: hanging hardware, Euroblock connector, terminal weather boot.


Manufacturer: SoundTube
Model Number: HP129a


System Type: 12" two-way, open-ceiling, ported
Nominal Impedance: 8 Ohms
Sensitivity: 97 dB(A)
Frequency Response (-3 dB): 118 Hz - 16 kHz
Tweeter: 1.375 inch Mylar compression driver w/ waveguide
Woofer: 12 inch treated fiber cone, treated cloth surround
Connections: Four-pin Euroblock


Power Supply: N/A
Maximum Power Consumption: 64 W
Dimensions: 17.8" (H) x 18" (D)
Shipping Dimensions: N/A
Weight: 36 lbs.
Shipping Weight: 41.5 lbs.
Warranty: 5 Years
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