I am looking at this diagram that has the 4313 and 4313B crossover schematic on it

( the two at the very bottom )

they appear identical to me, except the value of R3 looks like:

4313 = 2.5 ohms
4313B = 8.8 ohms

although maybe I am misreading the 4313B and it is written 2.5? in which case the two are identical?

Am I missing something?


I was under the impression the 4313B had a difference in the crossover vs the 4313

( R1 is listed as 50 vs 51 ohms...is a 1 ohm difference even quantifiable? esp with +/- 5% resistors )

The reason I am asking is I have a 4313B and a 4313 that are paired up. the 4313 is substantially lacking in bass, but the woofer has been reconed by someone. I suspect the recone may be the reason

I do see the driver is different between them. ( LE 10H vs LE 111A )

however from my research so far, JBL says the LE 10H and LE 111A have the same specs

thanks!