Replacing speakers in Lat-1's


Can I put better speakers in cabinet to get better sound?
radrog
Have a pair of Krell LAT 1 speakers and have looked everywhere for replacement 8” woofers  Scan Speak Type 21W/16555-2 16 ohm speakers Called Krell and scan speak none available. I’ve looked everywhere and can’t find any.  Any suggestions on something that would work without having to modify the speakers. Thanks, Russell 
I realize your post is old but I have 4 new old stock 21w 16555 speakers available for sale.    I purchased for a project that I never completed.   

Does anybody have the schematics for the Krell LAT 1 or 2?  Does anybody know the part number for the tweeters?  Thanks