One of a range of chassis speakers to replace the main driver in the QTX Sound QS series speakers.
Specifications| Order Code | 902.509UK | 902.512UK |
| Impedance | 8 Ohms | 8 Ohms |
| Power max. | 500W | 700W |
| Power rms | 250W | 350W |
| Magnet size | 156 x 20mm | 156 x 20mm |
| Diameter | 30cm (12") | 38cm (15") |
| Frequency response | 45Hz - 6kHz | 42Hz - 5kHz |
| Magnet weight | 1.4kg (50oz) | 1.4kg (50oz) |
| SPL @ 1W/1m | 98dB | 101dB |
| Voice coil | 52mm (2") | 62mm (2.5") |
| Dimensions | 129mm x 307mm Ø | 151mm x 385mm Ø |
| Weight | 4.02kg | 4.52kg |
