Stereo subwoofers are not yet supported by the MA 1. However, there is a proven workaround with analog cabling:
Feed the left subwoofer with 2x the left signal and the right subwoofer with 2x the right signal.
This double feed is necessary to obtain the correct sound pressure from the subwoofers and can easily be achieved with Y-cables.
At the same time, the subwoofers will only reproduce L and R. The left KH310 satellite speaker must then be connected to the subwoofer receiving the L signal, the right satellite speaker must be connected to the subwoofer that receives the R signal.
Then measure the setup with MA1 with two subwoofers (Sub Left and Sub Right) and set it up as described in the described in the documentation.
In this procedure, the alignment parameters are created individually for each subwoofer.