2022+ Subaru WRX w/ HK Enhancement+ Series
BUILT-IN-BATCHES
OEM Audio Plus is proud to bring offer our signature sound reproduction and seamless integration to the Harman Kardon equipped 2022+ Subaru WRX/STI. More than “just a sub” the HK Enhancement+ Series delivers improved dynamics and clarity and deep, non-localized bass reproduction, all the while preserving ALL your vehicle functionality.
Installation Difficulty

Audio Upgrade
amplifier & subwoofer
ATTENTION: Compatibility with the 22+ WRX GT is in the process of confirmation. Reach out to us at [email protected] for more information.
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Kit Includes
- 8” Quad-Coil Subwoofer System (Carbon Fiber Cone Technology)
- Dedicated Subwoofer Amplifier (250Watts RMS)
- Subwoofer Gain Control Knob
- Quick-Sync Wiring Harness
Specifications
DEDICATED SUB AMPLIFIER
- Class D (95% efficient)
- 250 Watts
WRX SUBWOOFER SYSTEM
- 8″ Voice-Coil Subwoofer (4-Coil)
- Genuine Carbon Fiber Cone Woofer
- 100W RMS (200 Peak)
- Sensitivity 88.9dB (1 W,1M)
- Frequency Response: 20 -1000 Hz
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
Clean Crisp Clear
Refining the sound is a process on its own. Objective adjustments take you only so far. The ultimate test is our ears and the final sound is only achieved through extensive listening sessions amongst company peers. What you’re hearing is OEM Audio Plus.
Speakers
Subwoofer
- 27-Liter sealed fiberglass cabinet
- Mounts using factory hardware locations
- Non-invasive design preserves cargo area space
Amplification
64-Bit Digital Signal Processing
It sounds unbelievable.
Really what I was impressed with was the placement of the front stage.
The vocals and the strings can clearly be pulled out of the music