View Full Version : how can you tell real JBL diaphragms from aftermarket?

02-12-2011, 08:43 AM
Hi Guys.

Please can someone let me know how you can visually determine a real jbl original diaphragm and a aftermarket replacement? im going to be buying some jbl 2450j preowned and dont want to hand over big wads of cash if the diaphragms are aftermarket replacements and not genuine jbl..


02-12-2011, 04:51 PM
Even if they were genuine JBL, you don't know what life they've led.

I have a pair of new 2450J pulls you can have for the cost of international shipping/customs whatever.

Mike Caldwell
02-13-2011, 11:25 AM
The diamond pattern surround will not be as sharply embossed, sometimes the terminal screws are brass colored (JBL's are normally nickle/chrome), they could have a red sticker to indicate the + terminal (JBL's use red or green ink at the solder connection between the terminal screws, red 16 ohms, green 8) A lot of it is just how fit and feel of the diaphragm is, I know that's kind of ambiguous!