Are you planning on recording individual parts to the 1800 or just the stereo out? That will make a difference in what tracks you setup and stuff.
Here is a basic setup plan for the 1800 and Cubase that I copied from another thread I responded to asking similar. Keep in mind the VST connections may be different depending on how you plan to record the Roland.
You must first select the 1800 in Cubase. Devices>Device Setup...VST Audio System. In the drop down menu at top, select 'US-1800'. While on that page, check the 'Release Driver' box. This will allow the 1800 to play WMP, Youtube, whatever, while Cubase is open.
Now, go to Devices>VST Connections (F4 shortcut). Add a mono input bus. You will need to create a input bus for each input needed from the 1800. For each input bus created, you will left click on the 'Device Port' column (highlighted in yellow), and select the input channel of the 1800 that you wish to use. Leave the default Stereo output bus.
Now, create a track to record to. Project>Add Track>Audio>Mono.
In the 'Inspector' window at the left of the main project window, look for a symbol that looks kinda like this: >] SEE ATTACHMENT
This is where you select the bus you created in VST Connections. You will change this on each track that is using a different input channel on the 1800.
If you don't see
the symbol, click on the track name at the top of the Inspector window to pull to the main Inspector screen.
You will need to also toggle the monitor button on the track to hear the input (it looks like a side view of a speaker). Toggle it back off to hear playback.
--to make this toggle automatically; File>Preferences>VST. In the Auto Monitoring drop down menu, select Tapemachine Style.
Let me know if this gets you up and running.
Also, make sure the Monitor knob on the 1800 is fully clockwise to hear playback from Cubase.
