[TenTec] Orion 1 Audio interference

[G.C.]

Dear friends,

I have just finished to upgrade my Orion 1 with software ver. 2.061f 

I operate mainly in CW and I have noted immediately an audio mix between the SUB and MAIN receiver.

When I choose to listen with the MAIN receiver and change the SUB receive volume the MAIN audio change, both if you have selected the MAIN or SUB or BOTH audio.
This became more evident when you use an headphone.

Any other ham has noted this problem?

Beppe IZ2ABU