MartinLogan Motion 4i
Description of the product.
| Brand | MartinLogan |
| Model | Motion 4i |
| Drivers | |
| Woofer | 4" (10.2cm) paper cone with stamped steel basket. Non-resonant asymmetrical chamber format. Rigid structured dust cap to reduce cone break-up modes. Folded bass reflex port. |
| Woofer diameter (mm) | 102 |
| Midrange | |
| Midrange diameter (mm) | |
| Tweeter | 1" × 1.4" (2.6cm × 3.6cm) Folded Motion Transducer with 5.25" × 1.75" (13.3cm × 4.4cm) diaphragm |
| Tweeter diameter (mm) | 26 |
| Frequency response | 70 Hz – 23000 Hz +3 −3 dB |
| Enclosure | |
| Sensitivity (dB) | 90 |
| Impedance (Ω) | 4 |
| Recommended amplifier power, least (W) | 20 |
| Recommended amplifier power, most (W) | 150 |
| Built-in amplifier power (W) | |
| Height (mm) | 143 |
| Width (mm) | 320 |
| Depth (mm) | 145 |
| Weight (kg) | 2.72 |