I use one pf210he with the pf500 and it is loud enough to shake the paint off walls in small venues. My last band was ear-crushingly loud at times but nobody had any problem hearing my bass through it.
The key is to crank your mids, and make sure the guitarist is staying out of the bass freq territory.
The key is to crank your mids, and make sure the guitarist is staying out of the bass freq territory.