View Full Version : JBL 4310 Early Model (123a le5)

08-28-2012, 07:23 PM
Hello. I was wanting to ask a question about a pair of JBL 4310 (wx). I looked on the JBL website which reads that the early 4310 network is "N/A" and the later version with the 2212 etc has a 3111 network.

Neither of the tweeters are producing sound. When first connected, only the woofer were producing sound. I turned off the amp and worked the brilliance and presence controls back and forth. This fixed each midrange, even though it is still a little scratchy. Im wondering if the caps for the tweeters are bad or if its the l-pads.

How do I know which version, the "N/A" or 3111 network I have installed without removing?

What can I do to narrow down this issue? I believe that the caps in this model were submerged in a substance and sealed. How would one go about removing and replacing?