View Full Version : Se 400/408 equalizer boards

02-05-2004, 12:39 AM
Hi all,

a question for real specialists: in the se 400/se 408 energizer several equalizer boards could be used for some jbl speaker systems. The boards were labeled M 11 through M 25. I found no information about which number stands for what speaker system.
Any help? Thank you very much.

09-02-2007, 01:40 PM
I just bought a JBL SE408 and it contains the M-24 eq1ualizer boards which provide a slight bump in the upper frequencies, and not by much. I have a plot of the amp's response with and without the card and will send it along to you if you wish. I use the amp with my SG520 both of which have been reworked with basically a complete capacitor replacement. Otherwise, they work perfectly.

Take care,