Due to having developed new superior textile dome materials, Wavecor start phasing out tweeter models TW030WA09 and TW030WA10.
These models are being replaced by the new models TW030WA21 and TW030WA22
TW030WA21/22 feature Graphene reinforced Tetoron domes with superior high-frequency extension, better consistency, and higher temperature ratings.

The new tweeters are using same motor structures and other parts as TW030WA09/10, the only update being the dome material itself.
TW030WA21 and TW030WA22 are considered direct drop-in replacements for TW030WA09 and TW030WA10 for all practical applications.