@stspur
The “S” are probably Solens. Those were probably pretty good for their time but the Claritys should be notably better. Pretty cool to see “Thiel” on those resistors just like Tom wrote. Still, I would upgrade those to MRAs, especially if direct feed to the driver. Also, those coils look high quality, again “Acousta-coil” like Tom has written. I would leave those although tempting to try a foil inductor if on direct feed path to midrange or tweeter. As long as you’re in there you should replace all the electrolytics. Ideally switch these to film caps but if space and budget don’t allow at least put in fresh ELs.
$0.02
The “S” are probably Solens. Those were probably pretty good for their time but the Claritys should be notably better. Pretty cool to see “Thiel” on those resistors just like Tom wrote. Still, I would upgrade those to MRAs, especially if direct feed to the driver. Also, those coils look high quality, again “Acousta-coil” like Tom has written. I would leave those although tempting to try a foil inductor if on direct feed path to midrange or tweeter. As long as you’re in there you should replace all the electrolytics. Ideally switch these to film caps but if space and budget don’t allow at least put in fresh ELs.
$0.02