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loud pops after last firmware and mcu update - 可打印的版本

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loud pops after last firmware and mcu update - Koen - 04-10-2020

Hi, after updating my XSP MQA last week I am experiencing loud pops after disconnecting USB and starting songs. This happens while usb is still connected to source.

this didn't occur pre update.

[attachment=11]

it's this update: MCU v2.8 XMOS v3.30


RE: loud pops after last firmware and mcu update - Koen - 04-11-2020

This occurs when the dac goes to sleep when usb is unplugged and when my MacBook goes to sleep with usb plugged in.

anyone else experiencing this problem and / or have a solution? 

Would it be possible to degrade the MCU and XMOS firmware, I'd rather have the wrong filters than those loud pops that are dangerous for my speakers


RE: loud pops after last firmware and mcu update - Cao Wei - 04-13-2020

(04-11-2020, 07:11 PM)Koen 提到: This occurs when the dac goes to sleep when usb is unplugged and when my MacBook goes to sleep with usb plugged in.

anyone else experiencing this problem and / or have a solution? 

Would it be possible to degrade the MCU and XMOS firmware, I'd rather have the wrong filters than those loud pops that are dangerous for my speakers

Dear Koen,
Sorry for the inconvenience, please stop to use the DAC temporaryly.
We will try to reproduce your issues and fix it .
Please use the XMOS and MCU firmwares by the following links:

MCU v2.5 and XMOS v3.01:
https://www.matrix-digi.com/en/news/20191011428.html
MCU v2.7
https://www.matrix-digi.com/en/news/20191217441.html


RE: loud pops after last firmware and mcu update - Koen - 04-14-2020

(04-13-2020, 12:54 AM)Cao Wei 提到:
(04-11-2020, 07:11 PM)Koen 提到: This occurs when the dac goes to sleep when usb is unplugged and when my MacBook goes to sleep with usb plugged in.

anyone else experiencing this problem and / or have a solution? 

Would it be possible to degrade the MCU and XMOS firmware, I'd rather have the wrong filters than those loud pops that are dangerous for my speakers

Dear Koen,
Sorry for the inconvenience, please stop to use the DAC temporaryly.
We will try to reproduce your issues and fix it .
Please use the XMOS and MCU firmwares by the following links:

MCU v2.5 and XMOS v3.01:
https://www.matrix-digi.com/en/news/20191011428.html
MCU v2.7
https://www.matrix-digi.com/en/news/20191217441.html
Dear Cao Wei,

Thank you for your kind and prompt reply! 
In the morning I will downgrade the device. 

have a nice day!
Koen


RE: loud pops after last firmware and mcu update - Cao Wei - 04-15-2020

Hi Koen,
If you get a chance to test it, please let me know if it works fine with the elder firmware.
Thank you.


RE: loud pops after last firmware and mcu update - Koen - 04-17-2020

(04-15-2020, 09:24 AM)Cao Wei 提到: Hi Koen,
If you get a chance to test it, please let me know if it works fine with the elder firmware.
Thank you.

hi Cao Wei, 

yesterday I have downgraded the mcu firmware to 2.5 and left Xmos firmware at 3.30.
after unplugging usb there was a loud pop when the dac went into stand-by modus.

today or tomorrow I will downgrade the Xmos firmware and test again.

cheers


RE: loud pops after last firmware and mcu update - Cao Wei - 04-20-2020

(04-17-2020, 08:42 AM)Koen 提到:
(04-15-2020, 09:24 AM)Cao Wei 提到: If you get a chance to test it, please let me know if it works fine with the elder firmware.

yesterday I have downgraded the mcu firmware to 2.5 and left Xmos firmware at 3.30.
after unplugging usb there was a loud pop when the dac went into stand-by modus.
Hi Koen, Thanks for your info.
We also tested with our Mac Mini, but we did not reproduce the issue you met.
 Looking forward to your further test results.
Thank you again.


RE: loud pops after last firmware and mcu update - Koen - 04-21-2020

Hi did not have the free time to test further, I will keep you informed!

cheers koen


RE: loud pops after last firmware and mcu update - Cao Wei - 04-23-2020

(04-21-2020, 08:06 AM)Koen 提到: Hi did not have the free time to test further, I will keep you informed!

cheers koen

OK, contact me any time.