Hello. Sory guys, but i didn`t menage to find an ansver browsing the forum. I do not know much about this things.

Friend of mine traded his Usher speakers for a set of new Harbert`s 5 and so called set of drivers for 4343 or 4341 monitors. Since a kind of wood work is my job, I was picked up to make him a cabinets.
After he showed me a drivers and after my lurking around the net about JBL`s I realised that he did not get what he thought he will get. 2405 are OK, 2420 with horns allso, 2231 does look as 2231 with alnico magnet assembly but on the membranes there is a 2235H sigh writen with chalk (woofers where reconed). Main problem is 2121 which is not 2121 but LE10A. Can he use it in either 4343 or 4341 project or is it waste of time? He is woried that LE10A will be inferior to originals soundvise. 2121 will be hard to get as I can see...

Thank you for any opinion or suggestions.

Marijan