How do change the woofer in theis speaker

I HAVE THE SAME PROBLEM. AGENTS OF LITTLE HELP. THEY TEST FOR A FEW MINUTES AND REPORT ALL IS WELL

Since the coil is attached to to cone, you are looking at replacing the whole 15" driver (speaker)
To get access to the screws that hold it in place, you'll need to remove the front bezel from the cabinet, then remove the screws around the speaker's rim.

For what it's worth, that driver isn't a subwoofer, it's just a 15" driver. JBL does make 15" and 18" subwoofer drivers, but they aren't the same speaker as what's in this EON. Hopefully that will help you when you're shopping for a replacement driver.

eon 15 g2

There are two power supplies in there, one for the woofer and one for the tweeter.
You may have blown one of them.
Are you under warranty? If so definitely check the JBL website for a local authorized repair center ... they are local people, usually very nice and easy to deal with, and the warranty coverage is excellent.

For audio expertise and PA system help with feedback and noise, try our new DVD "PA Systems for Small Groups" at www.rexark.com

Download service manual here:
http://www.free-service-manuals.com/JBL_EON15-G2_Service_Manual_L38587/

The tweeter is not the problem. The Eons use the vents below the tweeter to cool the amp and woofer. Sounds to me like you have a power supply problem in the amp, possibly a bad capacitor or diode. You have to check the amp for proper operation.

please use a different connectors and try if it works

the eon woofer is designed to fit the small frame of the inside cabinet. The EV woofers look too deep to fit but you can try. I do think that the built in amps were set to work with only the JBL woofers so there might be a signal problem using the built in amp. The eon face seems to have their own screws to hold the grill so if they aren't holding you can drop some cement to help hold the srews in place. The front does not allow removal of the woofer so it seems whatever you do should not effect anything.

from our experience rebuilding woofers once the lead wires get pulled too much or start to strain you have been running too much power into the woofer and making the cone move too far in and out.You need to cut the input signal from your preamp down and cut the volume down on the speaker input on you eon. We keep seeing too many of these amped speakers blown from too much signal.

my son and i fixed an eon a decade ago that had this problem. we swept a sine wave through the audio spectrum and discovered it started barking somewhere around a low D on the piano.
Turns out the mains connection was intermittent right where it enters the eon from the wall. Soldered the ac power connections and the problem went away.