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PUREPATHCONSOLE: Measuring speaker for TAS5825M characterization config

FXtreme Electronics
Prodigy 170 points
Part Number: PUREPATHCONSOLE
Other Parts Discussed in Thread: TAS5825M, PUREPATH-CMBEVM, TAS5825P

Hi:)

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When configuring the Speaker-Characterization settings for the TAS5825M, can a device like the DATS-V3 be used instead of the PurePath-CMBEVM?

If not, is there any way I can get a sample of the PurePath-CMBEVM?

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How should the speaker parameters be measured when:

2 Subwoofer drivers and 2 Passive-Radiators are in the same enclosure (all sharing same internal volume).

TAS5825M Stereo processing, PBTL/mono output (Right channel / Sub 1) (SDOUT to TAS5825P).

TAS5825P Stereo processing, PBTL/mono output (Left channel / Sub 2) (SDOUT from TAS5825M).

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Also, when measuring the speaker parameters, must the speaker be free-air or in the final enclosure?

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Thanks!

  • 0
    TI__Genius 11300 points

    hi FX

    do you want to use smart amplifier?

    if do not use that, you do not need to calibrate the speaker.

    tas5825m have the smart amplifier feature, but tas5825p do not have that.

    it seems you cannot balance L and R channel if use smart amp.

    tks

    jesse

  • 0 in reply to Jesse Ji
    Prodigy 170 points

    Hi Jesse:)

    -

    Thanks for your response.

    Yes I want to use the Smart-Amp features.

    Yes I am aware that the TAS5825P does not have the Smart-Amp features. I will only be using the TAS5825M for the Smart-Amp features.

    -

    For measuring the parameters for the Smart-Amp Characterization, should the speaker driver be free-air (without speaker enclosure) or should it be in the speaker enclosure when measuring?

    -

    Thanks!

  • 0 in reply to FXtreme Electronics
    TI__Genius 11300 points

    hi FXtreme

    with enclosure is better to measure the paramenter.

    the measurement method, there is no need to measure with our board, using klippel is also ok, sometimes this was used by us too.

    DATS should also be ok, but we haven't verified how correct it is.

    tks

    jesse

  • 0 in reply to Jesse Ji
    Prodigy 170 points

    Hi Jesse:)

    Thanks for your response.

    Jesse Ji said:
    with enclosure is better to measure the paramenter

    If I understand correctly, it is possible to measure with both methods (with and without enclosure), but with enclosure is for best results?

    -

    Also, when having 2 speaker drivers in the same enclosure sharing the same internal volume of the enclosure, how should this be measured?

    Should I just measure 1 speaker driver, or should I connect both in parallel / series when measuring? And is this method the same when having an enclosure with Passive-Radiators instead of Sealed?

    -

    Thanks!

  • +1 in reply to FXtreme Electronics
    TI__Genius 11300 points

    hi, FXtreme

    1.

    your understanding is correct.

    if using the parameter w/o enclosure, the parameter might need manually adjusting to make sure the excursion do not exceed Xmax.

    we still recommend using the parameter tested with enclosure.

    2.

    as you know, TS parameter is small signal parameter, actuator and speakers' mutual affect usually do not happen with small vibration if the back volume is kept enough.

    2 spks situation or having passive-radiators all can use the parameter tested with enclosure, but the enclosure need to consider remove the volume of another speaker. although the parameter might have little change with actual situation, but we can do parameter adjustment according to final actual excursion.

    tks

    jesse