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proper amp to speakers

PostPosted: Sun Apr 14, 2013 4:57 pm
by noe525771
hey,i have 4 jbl 4733a,4 jbl 4719x,for my speakers.i have 2 qsc 1850,2 qsc 2402,2 qsc 2450 and 2 beringer 4000 .im thinking of running 1 1850 for hi's control knob half power left and right.Mids one berginger 4000 bridged for tw0 jbl 4733 mids,2 2402 bridged for 2 4719 1amp per speaker and 2 2450 bridged for the other 2 4719. would this be a good way of setting them up ?any insight would be awesome ...

PostPosted: Sun Apr 14, 2013 6:35 pm
by gbheil
Match your ohm ratings from amp to speaker load. Run your amps near full and control volume with the board.

PostPosted: Mon May 06, 2013 1:22 am
by noe525771
so for to cabinets they will be running at 2 ohms and recommended ohms for qsc 2402 amps are 4 ohms bridged mono at 2400 watts will that be ok for the mids on the sr 4733a bi amped and ill be running the qsc 2450 at 4 ohm bridged mono for each 4719x subs so im thinkin it will be ok

PostPosted: Mon May 06, 2013 3:16 am
by gbheil
I try to keep it really simple with my stage gear as it can get quite complicated for the average individual. ( that would be me )

Maybe this will help:

http://www.prestonelectronics.com/audio/Impedance.htm

PostPosted: Sun Jun 02, 2013 4:30 am
by Cajundaddy
This looks like a lot of gear. Audience of 5000 plus? My simple rules of sound reinforcement are:

KISS -Keep it simple sherlock and only bring as much gear as you need to cover the audience.

Avoid 2 ohm loads. Bad things happen at 2 ohms even when an amp is rated to go there.

Testing and measurement- Set up your rig well in advance of your planned show, run some music through it that you know cold. Walk the arena listening for hot spots/dead spots, balance and test for SPL with a meter. Adjust until you can get good clean coverage and SPL without ever clipping an amp. No clippy- no breaky.

YMMV

PostPosted: Sun Jun 02, 2013 1:20 pm
by GuitarMikeB
PA system for 5000? Rent local (or better yet make it part of the required contracted backline), don't truck it around!