Further to the interview with Ron Carter in BassPlayer:
BassPlayer -- "Have you ever recorded without a pickup, or with an amplifier?"
RC -- "Ive never recorded with an amplifier, and Ive made only about four records without using a pickup. While those results were musically pleasing, the bass presence needed to be altered to ensure that it had more impact on the music.
Its still trial and error for me. Ive done dates where the bass sounded so boomy I had to borrow masking tape from the engineer so I could tape up one of the -holes; that way the sound wouldnt escape so quickly and Id be better able to control what came out. That doesnt always work, but it worked for three days during that particular session."
So it's still trial and error for the great wize & wizened Ron Carter. There is no "set it & forget it". Temp, humidity, room size, number of people in the audience or on the dance floor varying ... Bass may be the foundation upon which music is built, but we bass players are all standing on illuvial soil.
Psykopatsak, I'm not saying anything new, but I don't think anyone has summed it up:
1) friends and colleagues
Try your bass through a friend's amp, borrow someone's spare mic or pickup to try for a while, ask to try other players' rigs at a multiple billing if time permits.
2) Buy used, Sell & Trade
As mentioned, buy stuff used. If money's tight, no need to hang on to a mic, pickup or amp. Sell or trade it for something you need/want to try. If you find you need it again at some later stage, buy it used or trade for it again.
There are plenty of impoverished gear whor...uhm hounds chasing tone who are buying, trading and selling equipment. Check the TB classifieds, eBile, your local version of Craigslist etc...
BTW, apart from my bass, due to my location (shipping costs), language barriers (no hablo el loco local lingo) I've had to buy all my gear new. However, I bought most of it on sale at (often) huge discounts. The only thing I had to pay full price for was my Underwood; the best deals I've had were on my B-band pickup and amp/speaker -- half price!
Use the "Deal" Luke, and may The Tone be with you, always.