Overview

The WiiM Sub Pro supports built-in RoomFit™ Room Correction to optimize bass performance according to your room's acoustics.

RoomFit™ Room Correction improves bass performance by compensating for your room's acoustics. It fine-tunes the WiiM Sub Pro's output using advanced audio processing to reduce boomy, muddy, or uneven bass caused by reflections, furniture, and placement. The result is tighter, clearer, and more balanced bass throughout your listening space.

Preparations and Instructions

Before Calibration

  • Avoid obstructions around the WiiM Sub Pro.
  • Set your WiiM Sub Pro's volume to a moderate level.
  • Close doors and windows.
  • Keep the room as quiet as possible.

During Calibration

  • ALWAYS remove the protective case from your phone.
  • ALWAYS hold the phone as far away from your body as possible.
  • ALWAYS point the microphone towards the speaker you are currently measuring.
  • ALWAYS avoid obstructions between the microphone and the speaker.
  • ALWAYS place the microphone at ear level (if you sit while listening, use the height of your ears when seated).
  • Microphone Placement: Ensure the microphone, the listener's ears, and the speaker's acoustic center are approximately at the same height.
  • Use an external microphone when available for more accurate calibration results. For details, see Using an External Microphone for RoomFit™.

Step-by-Step Guide

StepsDetails
1. Open WiiM Home app.

Open the WiiM Home app on your mobile device.

2. Open RoomFit™.

Go to the Devices tab > Open the WiiM Sub Pro settings > Select Subwoofer RoomFit™.

Tip: Tap the  icon to directly open the WiiM Sub Pro settings.
3. Configure parameters.

Tap the icon to open RoomFit™ Settings.

Adjust the following settings to match your preferences:

  • Target Curve: Defines the target frequency response that your WiiM Sub Pro tries to match after Room Correction. Choose the desired frequency response curve from B&K, Harman, and Flat before Room Correction.
  • Smoothing: Reduces minor fluctuations in the frequency response to help focus on overall trends and prevent overcompensation. Choose a value from the following ones:
    • 1/3 Octave: Strong smoothing. Shows overall trends, hides fine details.
    • 1/6 Octave: Balanced smoothing. Good mix of clarity and detail.
    • 1/12 Octave: Light smoothing. Reveals more detail but may look uneven.
    • Variable: Automatically adjusts smoothing depending on frequency. Light smoothing on bass for detail, heavier on treble for readability.
    • Psychoacoustic: Smoothing according to how humans hear. Hides the tiny acoustic bumps that microphones measure but your ears can't actually hear.
    • ERB: Smoothing based on advanced "human hearing" mode. It provides more detail than Psychoacoustic while still considering human perception.
Note: Other settings are fixed and cannot be modified.
4. Start RoomFit™ process.

Tap Next to start the RoomFit™ process.

Tip: Follow the prompt to rotate your phone 180°, so the bottom microphone faces the speakers for accurate measurement.
5. Audio check.

Tap Play Sound to perform an audio check.

6. Start tuning.

Tap Start Tuning to begin the acoustic measurement, then evaluate the results from the curves below:

  • Target: The desired frequency response that RoomFit™ aims to achieve.
  • Raw: The measured frequency response of your speakers and room before RoomFit™.
  • Equalization: The EQ adjustments that RoomFit™ makes to correct the variations.
  • Predicted: The predicted frequency response after RoomFit™ correction is applied.
7. Evaluate results.

Review the actual RoomFit™ result from the curves below:

  • Target: The desired frequency response that RoomFit™ aims to achieve.
  • Raw: The measured frequency response of your speakers and room before RoomFit™.
  • Actual: The actual frequency response after RoomFit™ correction is applied.

If the Actual curve closely matches the Target curve within the adjustable range, the RoomFit™ result is effective. Tap Apply Correction to proceed.

If there are large differences, tap Adjust Again to re-run RoomFit™.

8. Save results.

Tap Save Profile to save the RoomFit™ results as a custom profile. Alternatively, tap Skip to save into the Auto profile.

9. Finish.

Tap Done to finish the RoomFit™ process.

Tips