2) Two Replacement for Motorola KSN1142A Piezo Horn Driver
HW Audio:. Motorola Style Tweeter Piezo Square
GRS PZ1025 2" x 6" Piezo Horn Mid/Tweeter Similar to KSN1025
CTS Tweeters, High Frequency Tweeters and Horns- CTS formerly Motorola for good quality and cost effective systems. CTS speaker upgrades. CTS tweeters here.