Some devices combine MIDI OUT with MIDI THRU and allow you to turn on or off the MIDI THRU capability in the utilities section of the module. Start the cabling process by connecting a MIDI cable from the MIDI OUT on your computer to the MIDI IN on the first sound module. Next, connect a MIDI cable from the MIDI THRU of the first module to the MIDI IN of the second module, and so on down the line. OK, that was simple enough. This is where it gets interesting.
Windows are also there for channel volume and panning.
If you have track 1 set for MIDI channel 1, patch 001, then the recorded notes on that track will try to play back on channel 1, using patch 001, on every sound module in the chain. The way around this is to leave the patch window blank in the sequencing software. Go directly to the sound module and after reading the manual for a moment or two, turn on channel one, select the patch you want for channel one, and turn off all the other channels on that module. Every time you open and play the file, the computer will stream out the sysx data and setup the module with the correct channel and patch settings. For the QSR, set channel 2 on, channels 1 and 3-16 off, with a good bass guitar patch selected for channel 2.