Thanks for the info. Yes I also want EDM parties so I will need 6-8 subs as I see. Now I read a lot on forums etc. and I found lot of people find PRX 718 sound nicer then kW subs, its also better price (6-8 pieces would be soo expensive :O ), so I think I will stay at PRX.
Are 4x PRX 715 tops enough for matching 8x PRX 718 subs?
EDM? 500 people
outdoors?!? I am not familiar with what they expect in Hungary, but I know around here, you'd be (at the minimum)
doubling that amount of subs.
With your need for outdoor arena events -- you may want to keep in consideration some model(s) of speakers that are flyable. Often for events where you're needing to announce stuff, you want a higher coverage area, but you don't need concert level PA. Just getting the speakers up and over people's heads will suffice. If I was doing that (Harman house here) I'd be flying a couple VRX boxes. Works for that application but also for your other outdoor parties. Passive will be cheaper then active, but then you need to worry about amps/configurations.
-Ray