| SD-150 | |
| SD-150PH | |
| SD-150-1 | |
| SD-152B | |
| SD-152BH | |
| SD-153B | |
| SD-153BH | |
| SD-153H | |
| SD-155H | |
| SD-157B | |
| SD-157B-2 | |
| SD-158B | |
| SD-158BH | |
| SD-158B-2 | |
| BDR-4P | |
| SD-150B | |
| SB01-5B | |
| SB01-6B | |
|
SD-157B |
 |
 |
 |
|
Magnet |
Ferrite Magnet |
Impedance |
150 ± 20% Ω at 1KHz |
Sensitivity |
90 ± 3dB S.P.L.60mv at 1KHZ 0dB 2 x 10-5Pa |