| Brand | Helix |
| Trade name | Xmax 136 |
| Pattern | round |
| Type | speakers 16 cm (from 150 mm to 170 mm) |
| Height | 65 mm |
| Type acoustic | coaxial |
| Main speaker dimensions | 165 mm |
| Number of bands | three-ways |
| Rated power (4 Ohm) | 40 |
| Maximum power | 80 W |
| Impedance | 4 Ohm |
| Sensitivity | 90 dB |
| Frequency range from | 62 Hz |
| Frequency range up to | 21000 Hz |
| Warranty / Service | 12 months |
| Price per | pair |