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’15+ STI WRX Upgrade | For HK Owners

7 Day Lead-time

OEM Audio Plus is proud to bring offer our signature sound reproduction and seamless integration to the Harman Kardon equipped Subaru WRX/STI 2015-Present. After launching the O+ Sound Solution for the standard audio WRX/STi vehicles, we have received a flood requests to make an upgrade path available to the owners equipped with the HK system. Here it is!

More than “just a sub” the HK Enhancement delivers improved dynamics and clarity and deep, non-localized bass reproduction, all the while preserving ALL your vehicle functionality.

$1,199.00

(VA-HK-RSO) ($399.00)
  • 8” Quad-Coil Subwoofer System (Carbon Fiber Cone Technology)
  • Dedicated Subwoofer Amplifier (400 Watts RMS)
  • Vehicle-Specific Sub enclosure (14 Liters of Air Volume)
  • Subwoofer Gain Control Knob
  • Acoustic Correction Filters
  • Quick-Sync Wiring Harness
  • WRX/STi SUBWOOFER SYSTEM (Dual Option)
    • 8″ Dual Voice-Coil Subwoofer
    • Genuine Carbon Fiber Cone Woofer
    • 100W RMS (200 Peak)
    • Sensitivity 88.9dB (1 W,1M)
    • Frequency Response: 20 -1000 Hz
  • DEDICATED SUB AMPLIFIER
    • 300 Watts RMS
    • Class D (95% efficient)
    • Real-time system diagnosis for trouble-free operation
  • ACOUSTIC CORRECTION FILTERS
    • Correction of excessive sibilance and edginess from the dash speakers.
    • Removal of muddy-ness attributable to front door woofers.
    • Improved transparency between all the speakers resulting in a coherent sound reminiscent of high quality bookshelf monitors or studio near-field monitors. Improved imaging, stereo separation and seamless integration with the subwoofer.
  • QUICK-SYNC WIRING HARNESS
    • Maintains all factory functionality
    • Constructed of genuine OEM connectors
    • Fuse Holder Assembly is element proof butt-connectors w/ built-in solder
    • < 4lbs / 1.8kg

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