Hi,
I'm a guitarist of 15 years but had the opportunity to join a band as their bassist. I make my own guitars so naturally built by own bass, so I've always been noodling around with bass lines to harmonise riffs.
I have an Ampeg PF-500 going into a 115. My own bass as mentioned, 4 string (C tuning) Wilkinson MM p/up with a single V and T.