It's not nice when your DBX-85 ECO units are interfering each other .
Each DBX-85 ECO has it's own unique frequency, because of this it should not happen that two sets are interfering each other.
It could happen that both units channels are at almost the same frequency.
This could be simply solved by not placing the parent units to close to each other, a distance of approximately 1 meter from each other should suffice.
Doesn't this give any solution than you could always offer your unit for repairing, so we can have a look at at.
You can sign up your unit for repairing via our website
Should you have any additional questions you can always contact us via this website.
Be as clear as possible with your complaint discription, so tha we can service you as properly as possible.