The Yamaha AN1x Synthesizer mailing list

Try a couple of these tips:

1. No effects-keep the sound bone dry.
2. Run the sound through a bass amp. You might want to try out a bass 
P.O.D.if you're feeling rich and you don't want to lug a massive 
extra amp with you. Sans Amp is also supposed to work well. 
3. Keep the sustain turned way down(0-9), and fiddle with the decay 
until the sound gets punchy and percussive.
4. Try turning the VCA feedback up (80s)
5. Try an outboard compressor-the 80s Boss stomp box works nice for 
bass.
6. Try a single oscillator patch.

Try the hints listed here:

http://www.darksonus.com/articles/analog_bass.html

I play through a sixties Fender Bassman. I bought it used a million 
years ago. Almost impossible to dial up a bad bass sound when played 
through this amp.

Rainbow Jimmy
http://www.mp3.com/spaceanimals
http://www.spaceanimals.com