I have two Neumann KH 120 II with an MA 1 and a MOTU M2 audio interface.
The MOTU M2 has two balanced 1/4 inch (6.35 mm) outputs that are connected to the KH 120 II:s via XLR, and two unbalanced RCA outputs that mirror the balanced outputs.
Is it possible to add a KH 750 DSP to this setup, or would it be necessary to get an audio interface with four balanced outputs?
I see two options for using the MOTU M2, but I'm not sure if they're workable.
1. One option might be to connect the KH 750 DSP to the balanced outputs on the MOTU M2 via XLR. The KH 750 DSP would then be connected to the two KH 120 II:s via the XLR outputs on the KH 750. Each speaker/subwoofer would have its own Ethernet connection to a network switch for use with the MA 1 alignment system. However, I haven't been able to confirm that the KH 120 II can be connected in this way. Neumann's online MA 1 documentation seems to indicate that each network-enabled speaker/subwoofer must have its own connection to the audio interface. That would seem to rule out connecting the KH 120 II to the KH 750 DSP in the same way as the analog KH 120. But judging by the diagram on page 4 of an older MA 1 manual (v. 1.1), it does look like the KH 80 DSP can be connected in the way I describe above. This suggests that it might also be possible for the KH 120 II.
Link to the MA 1 documentation: https://ma1.neumann.com/manual
Link to the older manual (v 1.1, 02/2021): https://www.bhphotovideo.com/lit_files/700694.pdf
2. As mentioned earlier, the MOTU M2 also has a pair of unbalanced RCA outputs that mirror the balanced outputs. According to the KH 750 DSP manual (publ. 06/24, p. 10), it is possible to use the KH 750 DSP with an unbalanced input signal, although the level of the signal will not be ideal. How much of an issue is this in practice? Would there be a problem with the fact that the RCA outputs are mirrored and not independent?
Link to the KH 750 manual: https://www.neumann.com/en-us/serviceundsupport/file-finder?productName=KH+750+DSP
The MOTU M2 has two balanced 1/4 inch (6.35 mm) outputs that are connected to the KH 120 II:s via XLR, and two unbalanced RCA outputs that mirror the balanced outputs.
Is it possible to add a KH 750 DSP to this setup, or would it be necessary to get an audio interface with four balanced outputs?
I see two options for using the MOTU M2, but I'm not sure if they're workable.
1. One option might be to connect the KH 750 DSP to the balanced outputs on the MOTU M2 via XLR. The KH 750 DSP would then be connected to the two KH 120 II:s via the XLR outputs on the KH 750. Each speaker/subwoofer would have its own Ethernet connection to a network switch for use with the MA 1 alignment system. However, I haven't been able to confirm that the KH 120 II can be connected in this way. Neumann's online MA 1 documentation seems to indicate that each network-enabled speaker/subwoofer must have its own connection to the audio interface. That would seem to rule out connecting the KH 120 II to the KH 750 DSP in the same way as the analog KH 120. But judging by the diagram on page 4 of an older MA 1 manual (v. 1.1), it does look like the KH 80 DSP can be connected in the way I describe above. This suggests that it might also be possible for the KH 120 II.
Link to the MA 1 documentation: https://ma1.neumann.com/manual
Link to the older manual (v 1.1, 02/2021): https://www.bhphotovideo.com/lit_files/700694.pdf
2. As mentioned earlier, the MOTU M2 also has a pair of unbalanced RCA outputs that mirror the balanced outputs. According to the KH 750 DSP manual (publ. 06/24, p. 10), it is possible to use the KH 750 DSP with an unbalanced input signal, although the level of the signal will not be ideal. How much of an issue is this in practice? Would there be a problem with the fact that the RCA outputs are mirrored and not independent?
Link to the KH 750 manual: https://www.neumann.com/en-us/serviceundsupport/file-finder?productName=KH+750+DSP
