I stumbled on a pair of L300's and brought them home. They are a bit rough but able to be restored I think. One of the HF drivers was not working, measured 36 ohms DCR. I took the cap off and measured again - 6.1 ohms. Must have been a bit of corrosion. Cleaned off the dust and put them back together and gave a listen. Ugh!
One MF driver is toast. The other doesn't sound so great either. So I took the cap of the offending driver and found the diaphragm broken in many places. Obviously these have been abused. Clipped to destruction I'd say.
Anyway here are some pics. Missing the trim pieces on the top. Any repair ideas for that? Grill cloth is filthy and pilled. Not sure it can be resurrected. May have to study the Zilch grill fixing thread. It has the black grills but I s'pose I could use JBL blue. I think that is a stock color for these.
They have consecutive serial numbers and it looks like the woofers have been reconed. A little sloppy around the dust cap but otherwise looks good.
The LE85 says 8 ohms but the replacement 'phragms are 16 ohms. Can anyone shed some light on that?
BTW I found some used drivers for 6 bills a pair. Heck that is the same price as diaphragms. I may pull the trigger on that. All in all I have about a grand banked to restore these. any help, advice, or tips before I do irreversible damage will be appreciated.
-Mark
As you can see one is missing the back door. I'll need to somehow fabricate a new one. But they are more than just a door. It supports the MF driver.