# R4 Protect Tune - Top And Bottom Speakers Build 21.4.0

## Tune Details

- **File name**: r4_21.4.0
  - _Device_: CS35L41 revB2
  - _Firmware Version_
    - _Protect_: Playback 6.47.0
    - _Calibration_: Playback 6.47.0
    - _Diagnostics_: Playback 6.47.0
  - _Signal Chain_:
    - _Protect_: Protect Lite
    - _Calibration_: Calibration
    - _Diagnostics_: Calibration and Diagnostics
- **Amplifier Gain**: 17.5dB

### Changelog

#### 21.2.4.0

Retune using R4 EVT samples.
Firmware moved to 6.47.0 for protect, calibration, and diagnostics signal chains.

#### 21.2.3_ENG

Based on 21.2.2_ENG with HPF cutoff frequencies set to 150Hz for both top and bottom protect tunes

- Top speaker protect tune uprev 21.02.2eng → 21.02.3eng
- Bottom speaker protect tune uprev 21.02.0 → 21.02.1
- All other files same as 21.2.2_ENG

#### 21.2.2_ENG

- Engineering build with Tmax of top protect tune fix in place. This is intended to resolve the overshoot issues seen in
  21.2.0 but withthout the de-margin of Tmax that was done in 21.2.1
- All other files same as 21.2.0

#### 21.2.1

- Updated Top thermal protect tune after reports of exceeding Tmax
- All other files same as 21.2.0

#### 21.2.0

- Initial protect tune

### Included files

**Readme (This file)**

- readme.md

**Protect, Calibration, and Diag bins with R Trace**  
 _For use in actual phone_

- Top Speaker
  - Top\r4Top_calAndDiag_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
  - Top\r4Top_cal_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
  - Top\21.4.0_100hpf\r4Top_protect_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.bin
  - Top\21.4.0_120hpf\r4Top_protect_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.bin
- Bottom Speaker
  - Bottom\r4Bottom_calAndDiag_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
  - Bottom\r4Bottom_cal_21.4.0_pb6.47.0_17.5dB_withRTrace.bin
  - Bottom\21.4.0_100hpf\r4Bottom_protect_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.bin
  - Bottom\21.4.0_120hpf\r4Bottom_protect_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.bin

**Protect & Calibration files without R trace**  
 _For use on Lochnagar 2 development platform_

- Top Speaker
  - Top\21.4.0_100hpf\r4Top_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.json
  - Top\21.4.0_120hpf\r4Top_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.json
- Bottom Speaker
  - Bottom\21.4.0_100hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.json
  - Bottom\21.4.0_120hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.json

_JSON files contains both protect and calibration deploy groups_

**Labsuite Files**

- Top Speaker
  - 21.4.0_100hpf\r4Top_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.exported_tuning
  - 21.4.0_100hpf\r4Top_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.exported_tuning
  - 21.4.0_120hpf\r4Top_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.exported_tuning
  - 21.4.0_120hpf\r4Top_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.exported_tuning
- Bottom Speaker
  - 21.4.0_100hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_100hpf_noRTrace.exported_tuning
  - 21.4.0_100hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_100hpf_withRTrace.exported_tuning
  - 21.4.0_120hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_120hpf_noRTrace.exported_tuning
  - 21.4.0_120hpf\r4Bottom_21.4.0_pb6.47.0_17.5dB_120hpf_withRTrace.exported_tuning

**Firmware Files**  
_Each firmware wmfw is in a folder respective for which type of bin file it is for_

- Firmware\Cal\halo_cspl_RAM_revB2_29.49.0.wmfw
- Firmware\Diag\halo_cspl_RAM_diag_revB2_29.49.0.wmfw
- Firmware\Protect\halo_cspl_RAM_revB2_29.49.0.wmfw

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## Speaker Parameters

### Top Speaker

| PARAMETER                           | VALUE            |
| ----------------------------------- | ---------------- |
| **IEC Rated Noise Power (nominal)** | 1 [W]            |
| **Xmax (0-Peak)**                   | 0.45 [mm]        |
| **Maximum Coil Temperature (Tmax)** | 130 [C]          |
| **Coil co-efficiency (Tk)**         | 0.00393          |
| **DC Resistance**                   | 6 [Ohms]         |
| **Resonance Frequency**             | 820 [Hz] +/-7.5% |

### Bottom Speaker

| PARAMETER                           | VALUE                 |
| ----------------------------------- | --------------------- |
| **IEC Rated Noise Power (nominal)** | 1.14 [W]              |
| **Xmax (0-Peak)**                   | 0.55 [mm]             |
| **Maximum Coil Temperature (Tmax)** | 110 [C]               |
| **Coil co-efficiency (Tk)**         | 0.00393               |
| **DC Resistance**                   | 6.1[Ohm]              |
| **Resonance Frequency**             | 720 [Hz] +/- 10% [Hz] |