Altec model 19 crossover

[garyl]

My 19s are old and still sound good but I suspect there are upgraded caps I can change after all these years. Are there any discussions for recapping these XOs? Any advice on what brand and what values I will need to make them new again will be appreciated.

[mattking52]

This old thread could be helpful, including a link to the upgraded crossover by Zilch (RIP):
https://www.audioheritage.org/vbulletin/showthread.php?7134-Rebuild-on-Altec-19-crossover

I'd recommend building new crossovers and leaving the old ones intact (if that aligns with your skill set), rather than trying to upgrade the existing ones.