TAS5782M: Speaker characterization Data Input mistmatch

Shauk Khan

Part Number: TAS5782M

Hallo

We are using the smart amp feature of the TAS5782 amplifier. I have made a Klippel Measurement of our woofer to get the speaker parameters which are required to put in the smart amp. I have attached the text file with the TS parameters of the driver. Also a PPC3 file, where I have input the data in the woofer characterization page. But when I look at the final data the Vas value seems to have changed after entering all the values. My original Vas value was 0.218 L but after entering all the values the Vas value in PPC3 changed to 0.000218 L. Any explanation what went wrong or why this is happening. All the other parameters look fine.

When Using the Smart Amp and learning board it is possible to measure the SPL response of the driver and load it in the characterization file, would it be possible to load the SPL data also if we do the SPL measurement using a external microphone not the leaning board.

On the Smart Bass there is a parameter called Xmax, which is the maximum excursion, but is it the peak value or the rms value?

thanks in advance

over 5 years ago

0 Luis Fernandes de Pina over 5 years ago

TI__Genius 15900 points

Hello Shauk,

Can you toggle the arrows in the T-S Driver model block and show me what you see there?

You can measure or upload the SPL response of a driver and load it into the characterization.

The Xmax is the peak excursion that your speaker can handle.

Best regards,

Luis

0 Shauk Khan over 5 years ago in reply to Luis Fernandes de Pina

Prodigy 120 points

Hallo Luis

Please find my replies below to your question

Can you toggle the arrows in the T-S Driver model block and show me what you see there?

Shauk: I uploaded two pictures there you can see all the TS parameter. I didn't excactly understand what you meant by toggling. As the forum does not support uploading PPC3 file format. Please find the PPC3 file in the following google drive link

You can measure or upload the SPL response of a driver and load it into the characterization.

Shauk: Could you please explain the procedure in details please.

The Xmax is the peak excursion that your speaker can handle.

Shauk: Is it the +/- peak excursion like +/-5 mm or just in one direction for example 5 mm peak excursion.

thanks again for your support.

0 Luis Fernandes de Pina over 5 years ago in reply to Shauk Khan

TI__Genius 15900 points

Hello Shauk

The SPL response can be uploaded in View/Import SPL Data panel once you open the audio processing tab.

The Xmax spec or the max linear excursion is typically -/+ X mm and outlined in most speaker datasheets.

Best regards,

Luis

0 Shauk Khan over 5 years ago in reply to Luis Fernandes de Pina

Prodigy 120 points

Hallo Luis

Thanks for the information. But what about the Vas value mismatch, could you download my ppc3 file from the link and have a look? I also got some data from a colleague who used learning board 1 to get the woofer data and there also the vas value has the same problem. Could you please have a look, this is holding our progress back. Let me know if you can not use the link, i can send u a mail also if necessary, just give me your mail id

+1 Luis Fernandes de Pina over 5 years ago in reply to Shauk Khan

TI__Genius 15900 points

Hello Shauk,

Change this back to the PPC3 file extension and test this. I didn't have issues modifying the Vas.

/cfs-file/__key/communityserver-discussions-components-files/6/Char_5F00_2_5F00_23_5F00_fixed.txt

Let me know if this file resolves your issue with the Vas value.

Best regards,

Luis

0 Shauk Khan over 5 years ago in reply to Luis Fernandes de Pina

Prodigy 120 points

Hallo Luis

thanks for your support.

I downloaded your file, changed it to PPC3 format. But when I try to load the data, I get a message ''The data you are trying to load is in a newer version that supported in the app."

My app version is 3.0.6

0 Edward Rose over 5 years ago in reply to Shauk Khan

Prodigy 120 points

hallo Luis

im working with Shauk on this project, the file works for me, but I am using 3.2.0 PurePath Console in windows

can you give Shauk access to this please?

0 Luis Fernandes de Pina over 5 years ago in reply to Edward Rose

TI__Genius 15900 points

Hello Edward,

It has been granted.

Best regards,

Luis

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TAS5782M: Speaker characterization Data Input mistmatch