13 cm (5") fullrange driver with paper cone and elastic rubber surround.  Can be used as a low-midrange driver too. Due to the special basket  design especially suitable as replacement driver for many HiFi speakers.
| Technical Data: | 
|---|
                                                   | Rated power | 40 W | 
                        | Maximum power | 60 W | 
                                 | Nominal impedance Z | 8 Ohm | 
                                  | Frequency response | fu–12000 Hz | 
                            | (fu: Lower cut-off frequency depending on cabinet) | . | 
                        | Mean sound pressure level | 86 dB (1 W/1 m) | 
                             | Opening angle (-6 dB) | 65°/4000 Hz | 
                             | Excursion limit | +/−7,5 mm | 
                        | Resonance frequency fs | 83 Hz | 
                        | Magnetic induction | 1 T | 
                        | Magnetic flux | 250 µWb | 
                        | Height of front pole-plate | 4 mm | 
                        | Voice coil diameter | 20 mm | 
                        | Height of winding | 5,5 mm | 
                        | Cutout diameter | 113 mm | 
                        | Net weight | 0,34 kg | 
                        | D.C. resistance Rdc | 7,7 Ohm | 
                        | Mechanical Q factor Qms | 3,52 | 
                        | Electrical Q factor Qes | 1,56 | 
                        | Total Q factor Qts | 1,08 | 
                        | Equivalent volume Vas | 7,7 l | 
                        | Effective piston area Sd | 86,5 cm² | 
                        | Dynamically moved mass Mms | 5,1 g | 
                        | Force factor Bxl | 3,6 Tm | 
                        | Inductance of the voice coil L | 0,8 mH |