17 cm (6.5") High-End low midrange driver with stiff, anodized aluminium cone, solid aluminium die-cast basket and elastic rubber surround. Extremely low electrical and mechanical losses due to vented pole plate, vented damper and capton voice-coil. Extremely long cone displacement due to long stroke voice coil. Suitable as low-midrange driver for 2-, 3- and 4-way high-end applications up to 2500 Hz.
 
 
| Technical Data: | 
|---|
                                                   | Rated power | 70 W | 
                        | Maximum power | 100 W | 
                                 | Nominal impedance Z | 8 Ohm | 
                                  | Frequency response | fu–10000 Hz | 
                            | (fu: Lower cut-off frequency depending on cabinet) | . | 
                        | Mean sound pressure level | 88 dB (1 W/1 m) | 
                             | Opening angle (-6 dB) | 51°/4000 Hz | 
                             | Excursion limit | +/−11 mm | 
                        | Resonance frequency fs | 38 Hz | 
                        | Magnetic induction | 1,1 T | 
                        | Magnetic flux | 520 µWb | 
                        | Height of front pole-plate | 6 mm | 
                        | Voice coil diameter | 25 mm | 
                        | Height of winding | 18 mm | 
                        | Cutout diameter | 150 mm | 
                        | Net weight | 1,2 kg | 
                        | D.C. resistance Rdc | 5,6 Ohm | 
                        | Mechanical Q factor Qms | 3,88 | 
                        | Electrical Q factor Qes | 0,43 | 
                        | Total Q factor Qts | 0,39 | 
                        | Equivalent volume Vas | 34 l | 
                        | Effective piston area Sd | 133 cm² | 
                        | Dynamically moved mass Mms | 13 g | 
                        | Force factor Bxl | 6,9 T m | 
                        | Inductance of the voice coil L | 0,9 mH |