Speaker Amplifier Sudden Thump/Bass pop at ignition on and off

Neckbone

Duomax try powering you dac from a source other than your car. Run an extension cord and use a usb brick or power bank and see if that makes a difference

Duomax

I tried plugging in an input into the box from an external source. I had my phone to rca directly to most box and have the same issue. Whats your situation?

stefanos1000

I have the same problem using a Helix M6 DSP amplifier. Loud pop when I shut down the system. I use Dudu7 headunit.

hrtloop

Same problem. 2017 wrangler with the factory Alpine stereo upgrade/amp/sub. Loud pop on start.

dudu-lai

hrtloop Which CANBUS was selected?

jvasili

Same problem here. Toyota Camry XLE 2005 with JBL amp, Hiworld Canbus.

dudu-lai

Duomax RCA to optical audio conversion? There are two ways to do this
1: You can add audio isolators to the RCAs.
2: Add a delay starter on the power supply of the fiber optic decoder box (when the radio starts, delay 2-3 seconds before the fiber optic decoder box works).

hrtloop

dudu-lai Apologies, I should have included this:

dudu-lai

hrtloop Do you use Telegram? Please contact me at LSDUDUlai and I will send you the test software.

McDudu

I just installed dudu7 yesterday Subaru outback 2017 with OEM Harman kardon amp.and speakers using simple cambus and I am experimenting this exact same problem o happy about getting. This loud pop worry my speakers or amp.could get damaged. Can you share the solution to this .

dudu-lai

McDudu View this note
https://forum.dudu-auto.com/d/1079-exploring-the-problem-of-popping-sounds

eddyknowsit

After DUDOS3.6 update I started having issues, so far the most annoying issue is the pop sound when turning off my vehicle. Before the update the sound worked with no issues.

2015 Sonata Limited with OEM amp (JBL)
IF I move the Car volume to 1, it will not make the pop sound, but then I won't hear anything.

Any suggestions?

dudu-lai

eddyknowsit
This method may help resolve the popping issue.

Cut the 6-pin cable from the RZ-HYK-64 CANBUS box connector. Connect the 6-pin cable from the CANBUS box to the AMP cable on the DUDU A connector.

Then upgrade the MCU. DUDU7MCU - https://drive.google.com/file/d/1S9OWl8tIw6fElllTs_M8ott7ZmMSA6AR/view?usp=sharing

eddyknowsit

I did as you

dudu-lai I did it as you instructed, it worked, the pop sound is gone. Quick question, now it seems the sound is a bit lower than what it was. Any suggestions?

dudu-lai

eddyknowsit I don't know why the sound has become quieter. This doesn't affect the volume, it just changes the way it boots up.

eddyknowsit

dudu-lai I’ll keep playing with that, for now I am satisfied with the resolution. Thank you.