Hi Curlee!
I feed the jv through a mixer into the line in of my soundcard. I use 44.1 kHz sample rate, just as you do, 16 bits. One thing, maybe: Are you sure you are recording at the loudest possible level into your sound card, i.e. that you are as close to 0 dB as possible when recording the jv audio into your sequencer? If not, this may account for the loss in sound quality you experience.
I don't use Cubase myself (I use XG-Works, a Yamaha sequencer), but in order to record whatever I play on my keyboard on the jv as midi in the sequencer, I choose the midi out port in the sequencer and allocate channel 1-16 on that port to voices in a jv performance. (If you have a mixer, you will hear what you play on the jv - while playing - because you will mix the output from the jv into the sound coming through your loudspeakers. At this stage, what goes into your sequencer is only the midi data sent out by your keyboard. The actual synth sound doesn't enter your sequencer or PC until you record the actual audio output into the sequencer. If this is confusing, do read up on the subject.
www.computermusic.co.uk has a very good user's forum for this kind of entry level stuff.)
To be able to do the above you have to set your jv's performances up the way you want them. This isn't all intuitive - but by way of the SoundDiver bundled with the jv it can indeed be done. (Go to E-magic's website and download the update at
http://www.emagic.de/english/support/download/sdwin.html The version that came with my jv didn't even work.)
In order to run SoundDiver in parallell with you sequencer you either must have a soundcard with multi-client capable drivers (lucky you if you do!), or you will have to take recourse to Hubis Loopback Device, which is freeware.
There is a user forum for SoundDiver users at
http://groups.yahoo.com/group/sounddiver-users Register as a user there, and do a search on Hubis and you should get some help on how to set Hubis up with Sdiver and the sequencer on your system.
I hope this doesn't overwhelm you. All this was complete gibberish to me when I got my jv last summer. I've now got it all set up and running happily on my system, so don't loose faith.
Lastly, to record the jv audio output into your secuencer you just set the sequencer to - big surprise - record the audio output from the jv... Exactly how this is done in Cubase I don't know, but I am sure it cannot be all too difficult.
All the best,
Magnus
[This message has been edited by Magnus Nordén (edited 03-05-2001).]