X-Line MM-4.1
| Brand | Radiotehnika |
| Function | Speaker (Passive) |
| Country | Latvia |
| Form Factor | Bookshelf / Stand Mounted |
| Dimensions | 325 x 185 x 275 mm |
| Weight | 6.15 kg |
| Frequency Response | 50-22500 Hz |
| Sensitivity | 87 dB |
| Music power | 100 W |
| Impedance | 8 Ohm |
| Type | 2 way 2 driver bass reflex |
| Tweeter | 25 mm (silk) |
| Mid-Woofer | 125 mm (cellulose) |