Just got home from woodsyi's. Good to see him and Scottdazzel today for a MS-3 and dspMusik setup session.
Replaced the original demo unit with one of the latest batch of units.
Listened to the setup before removing the original dspMusik and great sound quality from the digital side with HiRez PCM and DSD files.
Replaced the dspMusik and added the rear sub channels with single ended connections. This had all 8 output channels running, two for VMPS RM40 mid-tweeter channels, two for RM40 woofer channels, two for VMPS sub front channels and two for the rear channel subs. Rear channel subs are at the sides of the seating area in his setup.
We listened to the full sub setup and then made a REW measurement. Noticed that the area around the 80Hz crossover point had two nulls and high loss to the UMM-6 mic location. Turned off the subs and filled in one of the nulls, but still one remained at 80Hz. Since the rear sub channels are closer than the front subs to the seating area, need to work on time delay for the rears to integrate correctly. Until then the subs are off for a future measurement session with a longer USB cable from the MS-3 to the UMM-6 mic.
woodsyi is putting some hours on the new unit to see if there is any change in sound quality. The original unit had many weeks of time on, where this one was new from the packing. I am going to compare my demo unit here to a new unit to see if there are any sound quality differences.
Next, will be installing a dspMusik with the VMPS RM50's with the MS-1 installed next and then a system goes to Pez and Tyson, once I have another MS-3 built.