Hallo All I am so lucky that I finally found a pair of JBL 2441 driver, and are now planing to use them in my JBL Olympus instead of my 2420.The other drivers are:LE15APR15075Right now I am using the Pass labs version of the L300 crossover as I had all the components.But now i what to make a crossover in better quality and a one there is made for the 2441So I have searched this forum for any plans of a good crossover and found the Giskards in below linkhttps://www.audioheritage.org/vbulletin/showthread.php?30535-Upgrading-modding-S7R-Olympus/page2But in that, there is used a 2420 driver instead of the 2441 that I will use, and the crossover that comes closest I can find is the JBL LX5, N7000 there is used in the original Olympus with the 375 driver So before I rush out and buy all the parts, I hope some of you will share some of your experience BR Manley