• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 30 subscribers
  • Views 514 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TAS2557: excursion questions

Peter Chen(ICP_FAE)
Intellectual 2480 points

Part Number: TAS2557

customer reported following 2 questions on TAS2557

  • What makes the actual excursion is far lower than speaker box spec?
  • What makes enable the “phase shift” will make the excursion getting smaller

TAS2557 excursion issue_e2e.pdf

  • 0
    TI__Guru** 114605 points

    Hi Peter,

    Could you please send their PPC3 file and the test audio file is possible?

    I'll check the possible reasons for this. I wonder why the estimated excursion is low as well. Have they tried different audio files?

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators

  • 0 in reply to Ivan Salazar
    TI__Intellectual 2480 points

    Hi Ivan,

     I am attaching the PPC3 file and test audio file for your review.

    Thanks for supporting to check the excursion issue.

    https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/6/test_5F00_file.7z

  • 0 in reply to Peter Chen(ICP_FAE)
    TI__Guru** 114605 points

    Hi Peter,

    I'm currently checking this out.

    Can you try to configure the device in ROM Mode 1 instead of using the snapshots? You can also try by enabling the FeedForward Protection in the SmartAmp panel.
    I want to verify if this could be caused due to the signal classifier. This feature is only present in smartamp mode with feedback enabled.

    Best regards,
    -Ivan Salazar
    Applications Engineer - Low Power Audio & Actuators