... Dia 220mm, Typical Grade:N35,N40,N42,N45,N52,35H,38SH Speaker Neodymium MagnetGrade Available:N35, N38, N40, N42, N45, N48 ... , 40H, 42H, 45H, 48H working temperature: 120°C30SH, 33SH, 35SH, 38SH, 40SH, 42SH, 45SH working temperature: 150°C 28UH, 30UH, 33UH ...