Hey guys, just signed up for this forum to see if I can find a resolution to a problem im having. Im an installer of 11 years and a customer of mine purchased a 2015 grand Cherokee summit with the 8.4"screen and harmon kardon speaker system. He wanted to upgrade the sub and add an aftermarket amp for the sub. Installed the JL stealth box in the right rear quarter panel and amp. I was unaware at the time this model came with the active noise cancellation. After installing, the sub produces noise, that will start low and gradually increase, and repeat. Obviously the noise stops when you open the door/trunk as the ANC only works when everything is closed up. I wish it was as easy as mimicking the door being open, but everything is controlled through the CAN-BUS system. I have run into this issue before on the newer Honda Accords as they too have ANC and was a simple fix. Now after some research ive found the ANC is only used when the truck is placed in MDS mode - drops 4 cylinders for better gas mileage. I cant tell the customer, hey sorry - don't use this feature. This noise is apparent in any source, with the radio turned on or off.
I found out that the ANC module is in the back right quarter by the sub box and the vehicle has 4 mics. Before I started messing with a brand new truck to try and resolve the issue, I figured id do some asking around. I read that this module also sends power to the speakers, so it works hand and hand with the amplifier (left bottom quarter).
Has anyone discovered a way to bypass the active noise cancellation? I believe it was not an option for the 2014 models so I don't know if anyone has done anything yet. I am tempted to disconnect all 4 mics at each location in the headliner, but am not sure how the truck will react. If the ANC module and amp work hand in hand, then disconnecting the module will most likely result in no sound at all.
Any help would be greatly appreciated. Thank you!
I found out that the ANC module is in the back right quarter by the sub box and the vehicle has 4 mics. Before I started messing with a brand new truck to try and resolve the issue, I figured id do some asking around. I read that this module also sends power to the speakers, so it works hand and hand with the amplifier (left bottom quarter).
Has anyone discovered a way to bypass the active noise cancellation? I believe it was not an option for the 2014 models so I don't know if anyone has done anything yet. I am tempted to disconnect all 4 mics at each location in the headliner, but am not sure how the truck will react. If the ANC module and amp work hand in hand, then disconnecting the module will most likely result in no sound at all.
Any help would be greatly appreciated. Thank you!