Behringer ep4000 no sound fan not running

SOURCE: Behringer 1500 red light. Amp powers up fan comes

RED LIGHT MEANS THERE IS EITHER WIRES TOUCHING OR A BAD GROUND. IN WORSE CASE SCENERIO THE A CHANNEL IS BLOWN

SOURCE: I have just bought an

You don't (unless you want two B1520's on one channel and the sub on another). Reading the manuals would help.

The EP4000 amp drives only two channels. It CAN be bridged for one speaker but it won't support two channel and bridged mode simultaneously.

http://www.retrevo.com/support/Behringer-EP4000-Amps-manual/id/23591dj795/t/2/

The B1520 subwoofeer is PASSIVE so it will need a dedicated amplifier to power it and control its volume independently of other speaker channels.

http://www.behringer.com/EN/Products/B1800X.aspx

SOURCE: I have a pair of

Run one per channel... DO NOT forget to use an electronic crossover feeding the amps as the speakers are rated only up to 300HZ so you need a low pass feeding these or you may burn them up. Some people are using the DriveRack crossover module for example to prevent sending highs to the subs and smoking them.