Each Vero 29 needs 36 volts @ 1.05 amps and 37 volts @ 1.4 amps....
In a series connection, simply add the voltage together, but current has to match....
The MW HLG 185 1400 puts out 132 volts.... The 4x
[email protected] amps draws.... = [4 x37 volts] 148 volts...So the HLG is 16 volts too short to run that series.....[That's why 3 is the max.....[3x37 =
111 Volts + 21 "free" volts
The 50w drivers from my link are a good choice for $12....you need one 50 watt driver for 1 Vero 29....Max 38v's.....Impossible to run 4 in a series...because the voltage is sized for just one diode.....
No lenses, not at that height....Try to get as much distance as you can to spread and let your cab act as a reflector essentially........I run no lenses in a 75cm Tall Cabinet with 15-25cm of distance from LED to plant tops.....