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TAS5805M: Audio forum

Adam Sojka
Prodigy 60 points
Part Number: TAS5805M
Other Parts Discussed in Thread: TAS5805

Hello, I want to configure the chip to work in a 2.0 configuration and the DSP setting concerning the equalizer part function normally, though the input mixer does not seem to apply. This pattern holds even if I try different configurations, I can not get from stereo to mono (meaning both left and right have mono as an input and are further adjusted by different equalizers). Let me know if you need any further details to determine what may cause this issue. Thank you for your reply, Adam Sojka

  • 0
    TI__Genius 14530 points

    Adam

    You mean you want to passthrough the L and R channel signal totally separately?

    Have you tried the Advanced in Input Mix?

    You can set the gain to -110 so that both side will not affect each other.

    thanks.

    Jesse

  • 0 in reply to Jesse Ji
    Prodigy 60 points

    Sorry, I meant the complete opposite, I always get left and right separation, even if I select mono.

  • 0 in reply to Adam Sojka
    TI__Genius 14530 points

    Adam

    if you choose configure 2.0, it means stereo mode. I don't understand how you select "mono" in configure 2.0. you mean input same signal to L and R?

    if you want mono mode, i think you need to choose Mono 1.1 with 2 speakers or Mono 1.0 PBTL with 1 speakers. these are real mono configuration I think.

    thanks.

    Jesse

  • 0 in reply to Jesse Ji
    Prodigy 60 points

    I could not find the crossover for the tweeter in the PPC3 when using 1.1, that is why I wanted to use stereo (2.0) and adjust the right channel EQ for the woofer and right channel for the tweeter. But even If I choose the input mixer as mono, I still get left channel only playing left channel with the EQ for the tweeter and wise versa. I don't get mono even if I choose it in the input mixer for the 2.0. 

  • 0 in reply to Adam Sojka
    Prodigy 60 points

    I am sorry if my explanation is vague. 

  • 0 in reply to Adam Sojka
    TI__Genius 14530 points

    Hi Adam 

    So your situation is : 1 input signal which is mono, and you want to separate it to low frequency and high frequency, and input them to woofer and tweeter separately?

    Am I understanding right?

    I think you can find the crosstalk in tweeter DCR.

    Jesse

  • 0 in reply to Jesse Ji
    Prodigy 60 points

    the problem seems to be more complex, I have tried all of the configurations possible even the one you mentioned in your reply and still, I can not get mono out, the channel routing is unchanged (there is still stereo separation). There might be some more serious flaws in my design, but I am confused because the other DSP settings apply to the final signal coming out ( e.q. EQ settings). Is there anything that might cause this? Maybe how the register states are being sent from the microcontroller to the TAS5805...?

    thanks in advance

    Adam Sojka

  • 0 in reply to Adam Sojka
    TI__Genius 14530 points

    Hi Adam

    I am still confuse about the "mono" output of what you said.

    can you show me a diagram about how you want the signal to be processed?

    register states been sent by i2c, once you finish setting the parameter in the DSP with PPC3, you can export those register values and send they by your microcontroller.

    thanks.

    Jesse