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SM7B for live?

As long as you have a soundguy that isn't afraid of micing a bass cab it will be fine. Be forewarned, most of them will greatly prefer a DI.

If you're wanting to do this to get "your" tone, unless you hire you're own soundguy that probably isn't going to happen.
 
yes, you're right about needing a preamp. 7b is a great mic for guitar and bass cabs... for live use, it presents a couple of problems. 1. low output (needs more gain to be useful). 2. mounting the mic could be a challenge due to being really heavy and bulky. If you're willing to deal with those 2 obstacles in a live situation, go for it. What kind of cabinet do you plan to mic ? and what style of music ?
 
I should have stated for mic'ing a cab not vocals live haha
Should work just fine. I have used every mic under the sun to mic my cab and I am back to the good old Sure SM57. I go for a vintage 60's -70's sound. I Run Hiwatts and 60's Thunderbirds.
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I seriously doubt you would need any extra pre-amplification (besides the FOH mixer preamp, that is) with an SM7 facing a 100+dB bass cabinet. Just sayin...

For spoken word or soft singing, maybe, but not in front of a loud bass or guitar cabinet...
 
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While I love my SM7B in the studio, given the choice, I'd take my Sennheiser 421 out to a gig if I really wanted to use a large diaphragm dynamic mic. The SM7B is just so bulky and that swivel mount is such a pain - not that the 421 clip is perfect but it's definitely easier to work with in a pinch, in my experience. Plus, those things are so rugged... I'm not sure the SM7B would stand up to the rigors of a stage show for very long.
 

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