Thanks, Rich. I thought the Boss stuff was solely for guitar effects. Good information.
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For all interested, I asked for set/up sound check info for the Audio Technica 4033a/SM, largely because Rich mentioned the possible unfamiliarity problem on the road, from the folks at ProSoundWeb.com. Here is some of what I got. Largely they recommend the BAND'S familiarty with the mike. "The Sweet Spot":

(sic)Had the Del McCoury Band in last night. They have been using 2 4033s for the last year or so to widen the sound field, although they still mostly concentrate around one of the mikes. They don't use a seperate mike for the bass and there was PLENTY of bass.
The secret of the one mike deal is the band must be able to play loud without monitors.

How to set up/soundcheck? Set up one mike, notch out 3-4 feedback freqs, tweak the low end and set the level 3-5 db below feed back so it doesn't sound hollow. If it's not loud enough, get another band

(sic)I just did this in a small room (200 cap.) for a 5-piece bluegrass band (Jim & Jennie and the Pinetops). Used one 4033. The group played old radio style around the mic-stepping up to the mic for solos and accented parts. There's a definite chorecography the band needs to work out. (it ads to the "show" as well). Bcz of the small space we worked in, I got plenty of bass. He stood 4-5 feet back to one side and I got him fine (made a nice direct to CD board recording too.) On a larger stage, you will want to augment the single mic with a pair of overheads and a mic on the bass. The bass mic will allow you to high pass the main mic bcz your real problem freq. are gonna be in the 120-500Hz area.