Even though the Web site is still up, Soliloquy has been out of business for awhile.
The drivers were proprietary and there aren't any direct replacements available from other manufacturers, as far as I could discover. Underwood HiFi, who advertises on this site, had a small supply of the original tweeters for awhile and it would be worth checking but I wouldn't get your hopes up.
It's a shame, because they're wonderful small monitors. You might be able to use the cabinets and crossovers with other drivers of the right physical dimensions but I don't know how easy it would be to get close to the original sound.
The drivers were proprietary and there aren't any direct replacements available from other manufacturers, as far as I could discover. Underwood HiFi, who advertises on this site, had a small supply of the original tweeters for awhile and it would be worth checking but I wouldn't get your hopes up.
It's a shame, because they're wonderful small monitors. You might be able to use the cabinets and crossovers with other drivers of the right physical dimensions but I don't know how easy it would be to get close to the original sound.