Post
by Professor » Thu Nov 20, 2003 10:02 pm
If you mean an upright bass like you'd see in an orchestra (a double bass or bass-viol), but played jazz style, there are lots of mic choices. I used to religiously use an ElectroVoice RE-20 with a direct box connection as well if the player had a pickup. Lately I've been using either a Neumann-Gefell UM-57 or a Neumann U-67 either one in cardioid, and just over the last few days I recorded with an Audio Technica AT-4050 - all with fine results. I generally aim for the right side (when I'm facing the player) pointing into the F-hole at around the same height as the bridge and less than 12" away. Be careful if the player moves alot or if he will be using a bow.
If you mean the acoustic bass guitar that looks like a large acoustic guitar with four rather thick strings, then I'm afraid I've never recorded one, though I'd probably approach it in the same fashion. If it has a pickup, then use a direct box and record that. The pickup/DI sound will typically be brighter, edgier and more nasally on a bass, and won't sound too rich and resonant. Add one or more large diaphragm condensers by the sound hole the way you would for an acoustic guitar's low end. Tube mics would probably be something I'd reach for first. If you have to play in a room filled with other instruments, then it would probably make sense to go to a large diaphragm dynamic (RE-20, Beta-52, SM-7, etc.) but get it closer to the instrument. If the fret noise sounds pretty, then put another mic up where you would for an acoustic guitar - but if it sounds ugly then don't bother.
Either way, if you are at all in doubt, pull out a couple of mics, set them up ahead of the session, give a test listen to them and pick the best two or three (if you can spare the tracks). Then make the final decision in mix down.
If you go with a condenser it will probably pick up a lot of sustain so you might want to gate the bass in mix down so you don't get a muddy samba. You would get sustain with a dynamic, but I'd be worried you might also get less of a clear attack and tone which are important in samba.
Let us know how it turns out.
-Jeremy