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Thanks for the update. I'll take a look at my drivers over the weekend.

Thank you for the thoughtful and informative post, kippers. I have a beat-up 2213 that's in need of re-coning so I will practice on it first.

Heating the speaker seems to be a last resort...

here's the flipside of the x-over. The model number was hidden between it and the rear baffle it was attached to

Found it!...

http://ka7oei.blogspot.com/2013/01/dang-it-jbl.html

not sure if this pertains my driver...

I came across a website the other day where someone reconed a 123A-1 because the voice coil was rubbing only to find that the foam filter inside the magnet assembly had deteriorated and some had got...

I know nothing about electronics but I just realized that the capacitor is probably a "high pass filter" and has no affect on the woofer.

Can someone please confirm this?

I think it's obvious that I am not an authority on the L88's or JBL in general. I provided the information I have which may or may not be conclusive.

If you are trying to make a positive...

As far as I know, they are original. There are no other components inside the cabinets except for the drivers. I have 2 sets of L88's, a much earlier version and the pair in question. The earlier...

The link you posted seems to be for an earlier L88 model. I posted the same schematic in post #4 just for comparison. Compare it to the photo I posted, they are completely different crossovers.

Well, I did a little web browsing and came across this thread...

http://forums.audioholics.com/forums/diy-corner-tips-techniques/23914-jbl-xover-cap.html

looks like the value of the capacitor...

For some reason, the speakers have been fine for the past few weeks, but yesterday, I hooked them up to a different amplifier and the same speaker started to cut in and out again. I pulled both...

Thanks! C35 it is then. Much easier to build.

Greetings JuBaL's! I have been amassing a small collection of JBL drivers over the years and think it's about time to start putting some of them to use. The drivers on my radar at the moment are a...

Thanks, I'll pull the woofer out over the weekend and take a look.

I was listening to my L88's hooked up to a Marantz 2330B receiver at a moderate listening level today when one speaker started to cut out. Not knowing if it was the receiver or the speaker I swapped...

The tweeters were bad when I got them. I'll use the 8 ohm LE20's.

Yes, both tweeter coils are open. If I use the 8 ohm tweeters with the 16 ohm woofers, does It matter if they are hooked up to the 8 or 16 ohm terminals of the tube amp?

Greetings! My first post..

I have pair of JBL D123 (16 ohms) with LE20's (16 ohms) and LX2 crossovers (ohms not indicated) housed in C38 enclosures. The problem is that the tweeters are blown (I...