I have a pair of 1990 la scala's with Al-3 crossovers. Are these good crossovers? I have had them for a decade and run a pair of 10in subs with them because they really lack bass. They do sound great but not without subs. Are there recommendations for updates to the al-3 crossovers? I have used many many different amps with these to try to get the sound I want surprisingly my favorite sounding amp is my sansui au717.