Guessing the VP160/180 are sufficiently heavy that you want brackets with more vertical separation between the mounting holes. I guess the ideal would be a couple of 'T' shaped shelf brackets where most of the vertical part was hidden behind the speaker. Something like this...  Then again if you are mounting it low I guess pretty much any heavy duty shelf brackets would be mostly out of sight. For clarity I'm suggesting shelf brackets but no shelf...
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8
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