| APM-TEC | Diameter (mm) | Height (mm) | Impedance (Ω) | Fundamental Frequency (Hz) | Frequency range F0 – (Hz) | Power rating (Rated / Max) (W) | *Sound Output (dB) | Frame Material | Diaphragm |
| APM-L272004C-1W | 27*20 | 6.9 | 4 | 600 | 15 | 1.0 / 1.5 | 83 ± 3 | Plastic | Cloth+paper |
*Tested at 1m 1W 0.6K 0.8K 1K 1.2KHz average
