Lowther DX Series


 

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DX2

DX3

DX4

DX45

DX55

 

 

 

 

 

 

 

Overall diameter 23.2 cm 23.2 cm 23.2 cm 17.4 cm 17.4 cm
Overall Depth 7 cm 7 cm 8 cm 7.0 cm 7.2 cm
Depth from Rear of Mounting Frame 6.4 cm 6.6 cm 7.9 cm 6.4 cm 6.6 cm
PCD Mounting Centres 20.8 cm 20.8 cm 20.8 cm 15.6 cm 15.6 cm
Baffle hole cut-out 19 cm 19 cm 19 cm 14 cm 14 cm
Magnet Ring Diameter 7.6 cm 9.0 cm 9.0 cm 7.6 cm 9.0 cm
Voice coil diameter 3.9 cm 3.9 cm 3.9 cm 3.9 cm 3.9 cm
Voice coil impedance (nominal) 4, 8 or 15 ohm 4, 8 or 15 ohm 4, 8 or 15 ohm 4, 8 or 15 ohm 4, 8 or 15 ohm
Nominal impedance Z 8 ohm 8 ohm 8 ohm 8 ohm 8 ohm
Minimum impedance Zmin 7.2 ohm 7.2 ohm 7.2 ohm 7.2 ohm 7.2 ohm
Nominal Power Handling 100W 100W 100W 100W 100W
Emission piston area Sd 0.021M² 0.021M² 0.021M² 0.021M² 0.021M²
Air gap width 1 mm 1 mm 1 mm 1 mm 1 mm
Air gap height 5 mm 5 mm 5.5 mm 5 mm 5 mm
Magnet type 'Hi-Ferric'¢â Rare Earth 'Hi-Ferric'¢â Rare Earth Hi-Ferric'¢â Rare Earth Hi-Ferric'¢â Rare Earth Hi-Ferric'¢â Rare Earth
Flux density (1 Tesla=10,000 gauss) 1.7 Tesla 2.0 Tesla 2.2 Tesla 1.7 Tesla 2.0 Tesla
Diaphragm Twin-paper Twin-paper Twin-paper Twin-paper Twin-paper
Frequency response 30 Hz - 20 kHz 30 Hz - 22 kHz 30 Hz - 22 kHz 80 Hz - 20 kHz 80 Hz - 22 kHz
Nominal air resonance 36 Hz 36 Hz 36 Hz 60 Hz 80 Hz
Sensitivity at 1m/1kHz/1watt 97 db 98 db 99.5 db 93 db 94 db
Maximum voice coil travel ± 1 mm ± 1 mm ± 1 mm ± 1 mm ± 1 mm
Suspension compliance Cms 993.888 uM/N 993.888 uM/N 993.888 uM/N    
Total Q Factor Qts 0.246 0.247 0.249 0.326 0.320
Electrical Q Factor Qes 0.22 0.22 0.22    
Mechanical Q Factor Qms 3.11 3.11 3.11    
Equivalent Volume Suspension Vas 0.015M³ 0.015M³ 0.015M³ 0.011M³ 0.011M³
Effective Moving Mass Kg. 0.0115 0.0115 0.0115    
Shipping weight 2.0 kg 2.5 kg 3.0 kg 2.0 kg 2.5 kg