A Bass amp/cab/preamp will always add a colour to a bass.
So , if you want audience to hear that colour , you place a mic.
If you want the audience to hear your bass , a DI is a lot better since it won't colour your *real* sound.
Hope that explanation clears it up.
It's not only the bass tone but the whole band mix/tone.
I learned not to interfere with FOH sound. It's not my job. My job is to play bass. If I get a crappy FOH guy , the client who pays for both of us is not gonna put the crappy FOH sound on me.
I'm a "hifi" type , even if I don't use Hifi stuff. I'm from that school.
My rig is a TD100 and an RCF ART310A or Mackie SRM450.
I tried to find a rig that would reproduced as closely as possible what my DI'd sound through a Studio reference.
I ended up using active "PA type" boxes.
So I don't see me placing a mike in front of my RCF , that would be very silly and pointless.
Like if a singer would say to the FOH guy ," the sound I hear in my monitor , that's what I want to sound like" , and the FOH guy would put a mike in front of the wedge.......
To the OP ; Size , does it matter , ask any girl.......
PS ; if I read all the junk mail I receive every day , it does.