4524 1" High frequency compression driver, 1" VC, 25 W AES, 113 dB
4538 1" High frequency compression driver, 1.5" VC, 60 W AES, 114 dB
4544 1" High frequency compression driver, 1.75" VC, 80 W AES, 113 dB
4550 1" High frequency compression driver, 1.75" VC, 80 W AES, 113 dB
