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Gosh Earl K, I don't want to destroy these, which was the whole point of posting this question!:crying: I remember as a kid, we drove these at "hippie" concerts, with low watt tube stereo amps, which...

Thanks Rob,
It's possibile the diaphragms are original, old for sure. I've never had the back covers off, not even sure if it's ok to do that.
Would you be willing to take a stab at a "safe"...

I'd like to ring these out and cook em on the bench for a spell as they have been in storage for years. I don't know the limits on lowest xover point, or max wattage for these. Can anyone direct me...

Oh Lord... I meant to say 288-Bs as to what I think they are...Brought them to the house to ring them out. Thanks very much for the insight!

8341783418Hi all, Glad to be able to pop in again after 10 years! I was digging through my audio elephant graveyard, and came across a pair of 288 horn drivers. They have the older wrinkle paint,...

Hi there Rob,

Thank you for the info.
I have only one 604. It came in a huge front loaded Hartsfield sized corner enclosure that looks as though it was either built in a cabinet shop, or by a...

Progneta,

I thank you for your reply. I listed the driver today on e-pay. I described it there as I did here, and will leave it to the new owner as to what to do with it (if anything).

I...

Hi,

I'm trying to figure out if this driver is working properly, but I have no experience with this model, and so, nothing to compare it to. All I have is a meter, my ears and eyes.

HF=7.7 ...

Tim
Have you looked on e-bay yet? Just do a search on vintage JBL there. All sorts of stuff will come up. As well, there should be a few here at the forum. Try the Lansing Marketplace Forum. You...

Subwoof,
Thanks! I did browse the library for L 45 (which takes a while on dialup),and did not find any info, except a couple of pics from an early 70's brochure. Is there a way to find out the...

I stumbeled across a pair of L 45's today
They had no 15's with them, a bit beat up, and were pretty reasonable. Of course I bought them,and before even dusting them off I loaded my 2220-2225 H...

I just bought these today (w/o woofers), and loaded my 2225's in them for a ouick test run.. love em!

The weird thing is, the front tag around the crossover says these are L 45 Flares, and the...

Speakerdave,

I'll be the first to admit many of my modifictions were unscientific, hit and miss, or "just get the job done" back in my sound co days. I think that was the case for having these...

Hi all,
Since stumbling in the door here last month, I've had a great time reading, talking and learning. I can also blame the forum for this new itch I have to build some enclosures. It's been a...

Hi can anyone give me an idea of make/model on these drivers?
More mystries from my elephant graveyard......

http://www.audioheritage.org/photopost/data//500/E_bay_pics_2-3-10_019.jpg ...

I just picked these L19s up today in a junk store. Not the best JBL box ever made, but I like em for a small room, and I will use them somewhere. The 8 inch drivers are in very good shape. The...

herki the cat,
Thank you! I'm lucky it went this well.
Here's pix of the 175. Sad news about replacement diaphragms, are there any good aftermarket replacements for the 175? or are we forever SOL?...

With everyone's help I have managed to solve and fix the problem. I removed the element,(thanks herki the cat), then the top plate.

Steve had it right. Indeed, the pot metal throat insert had...

"Without a doubt, the voice coil has been crushed against the motor center pole piece during attempted disassembly of the motor structure for no other purpose than to inspect the magnet."

Hey...

Hi,
I searched posts and threads for answers to these questions but could not find much. Questions questions questions....

Does JBL still make 130A recone kits? I kept searching forums after...

I think the magnet is ok but if I'm going this far, I might as well recharge the mag as well. That should put this 175 back in shape for the next 50 years or so.
Can anyone recomend a service shop...

Scotty,
Bolts seem ok, but I like your I idea for pressing it out.
I think jcrobso and Steve have nailed it. Either the magnet shifted, or the pot metal throat insert has crystalized and...

Steve,
Thanks for the insight. That could be the problem here, especially with the age of this driver. Do you think I could remove the element mounting plate myself? Still not sure how it is...

25 years ago I pulled this driver out of a C-34 looking just like this,
It's likely the whole enclosure was dropped before I bought it.


Just popped the horn off, and It looks as if the magnet...

I decided to cleve the rear cover off with light tapping on a utitility knife blade..worked great! There is nothing easy about pulling the plate back from the front housing. I'm fairly strong, and it...