SLAAE48 May   2025 TAS5825M

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Smart Amp Fundamentals
    1. 2.1 Speaker Basics and Models
    2. 2.2 Smart Amp Algorithm
  6. 3Preparation Work
    1. 3.1 Hardware Preparation
    2. 3.2 Software Preparation
    3. 3.3 Speaker Information
  7. 4Speaker Characterization
    1. 4.1 Characterization Set-up
    2. 4.2 Characterization Process
    3. 4.3 Speaker Characterization Guide
      1. 4.3.1 Hardware Connection
      2. 4.3.2 Power Up
      3. 4.3.3 Software Configuration
      4. 4.3.4 Speaker Characterization
        1. 4.3.4.1 Preparation
        2. 4.3.4.2 Speaker Type Selection
        3. 4.3.4.3 IV Measurement
        4. 4.3.4.4 Determine BL
        5. 4.3.4.5 Thermal Measurement
        6. 4.3.4.6 SPL Measurement
        7. 4.3.4.7 Safe Operating Area
        8. 4.3.4.8 Speaker Model Export
  8. 5Smart Amp Tuning and Verification
    1. 5.1 Smart Amp Tuning Guide
      1. 5.1.1  System Check
      2. 5.1.2  Choose Processing Flow
      3. 5.1.3  Import Speaker Model
      4. 5.1.4  Analog Gain Setting
      5. 5.1.5  Adjust System Gain
      6. 5.1.6  Equalizer Setting
      7. 5.1.7  Smart Bass Tuning
      8. 5.1.8  Bass Compensation
        1. 5.1.8.1 Corner Frequency
        2. 5.1.8.2 Alignment Order and Type
      9. 5.1.9  Max Level Tuning
        1. 5.1.9.1 Xmax
        2. 5.1.9.2 LAE Frequency
        3. 5.1.9.3 Power Limit
        4. 5.1.9.4 Attack, Decay, Energy
      10. 5.1.10 Anti Clipper
    2. 5.2 Smart Amp Verification
      1. 5.2.1 SPL Response Verification
      2. 5.2.2 Thermal Protection Verification
  9. 6Summary
  10. 7References

4.3.4.5 Thermal Measurement

On the Thermal Parameters page, read through the text and click the Thermal Characterization button and move to the next page.

Next, input the excitation frequency according to the suggestions on the Thermal Characterization: Caution page. For example, as shown in Figure 4-11, input 995Hz as the excitation frequency.

TAS5825M Input the Excitation FrequencyFigure 4-11 Input the Excitation Frequency

Then, click the Next button to start the thermal measurement process. The whole process can take about 10 to 20 minutes.

Once the thermal measurement process is completed, review the thermal model of the target speaker on the Review Temperature Model page.

TAS5825M Speaker Thermal Modeling ResultsFigure 4-12 Speaker Thermal Modeling Results

As shown in Figure 4-12, the light blue curve (voice coil temp.) needs to align well with the dark blue curve (fitted voice coil temp.), and you can click the Accept button to finish the thermal modeling of the target speaker.

Otherwise, if the two curves of the coil temperature cannot match well, or the thermal measurement process reports failure in the PPC3 software, the suggestion is to check your hardware and software configuration, and wait until the speaker’s voice coil to cool down (for about 20 minutes). Then, please click the Run Temperature Characterization button to re-run the temperature characterization.