| 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-L2704C-2W | 27 | 13.8 | 4 | 500 | 20 | 2.0/3.0 | 85 ± 3 | Metal | Cloth+paper |
*Tested at 0.5m 1W 0.6K 0.8K 1K 1.2KHz average
