Not likely the upgrade (it would affect both speaker and wireless modes, if so and there would be other reports) and have never heard of the wireless h/p causing interference with the Equinox...but there is always a first time. However, should check the most likely usual suspects first in a semi logical manner to try to localize the problem to the phones or the detector.
First, have you run a noise cancel after connecting? Ground balanced? Attempted to this in different locations. It doesn’t really sound like EMI, though.
Sounds more likely there is either something wrong with the headphones or they are not paired properly.
Sorry for the basic questions to follow - not trying to insult you or anything, but I have no way of knowing you did these things unless I ask.
Did you follow the manual step by step instructions on how to pair up the headphones?
Specifically:
Phones powered on, paired properly (i.e., do you get a BT symbol with the plus sign on the Equinox control pod display when paired with the detector) and h/p volume turned up?
Are the phones responding properly to legit targets, though noisy or just emitting random noise?
The phones come with a cord for backup unpowered mode use, do they work when you plug them directly into the detector?
Do they work plugged directly into the WM08 wireless module (charge and pair the module with detector first, refer to the manual for how to do this step by step).
Have you checked that the BT headphones work with other devices (e g., a phone) in BT mode and wired?
Do you have another set of BT phones you can test with the Equinox? Wired phones?
If the phones work other than when BT paired with the detector, then the detector BT module is suspect.
Check the manual for other troubleshooting guidance.
Let us know how it goes...
HTH
