BMS 12N620 - 500 W 8 Ohm

FEATURES
98dB sensitivity 1W/1m
500W Power handling
Extremely light weight of 3.5kg
3” copper sandwich voice coil for low power compression
Double treated cone for water protection
Neodymium magnet system
Triple aluminium demodulating rings for ultra low distortion
Optimal for compact 2- or 3-way systems

SPECIFICATIONS
APPLICATION Low-Middle
Nominal impedance Ohm 8
Power handling AES noise W 500
Sensitivity ( 1W/1m ) dB 98
Frequency response Hz 45 - 2500
Voive coil diameter mm 77 (3”)
Voice coil material Cu
Voice coil winding depth mm 19
Magnet gap depth mm 8
Basket Cast Aluminium
Effect. diaphragm diameter D mm 260

THIELE – SMALL PARAMETERS
Resonance frequency Fs Hz 43.6
DC resistance Re Ohm 5.70
Mechanical Q factor Qms 5.44
Electrical Q factor Qes 0.29
Total Quality factor Qts 0.27
Equivalent volume Vas L 67.30
Moving mass Mms kg 0.078
Mechanical compl. Cms mm/N 0.170
BL factor BL Tesla m 20.60
Effective piston area Sd m2 0.0531
Max. linear excursion Xmax mm 5.5
Voice coil inductance Le1k mH 1.14
Le10k mH 0.45

MOUNTING INFORMATION
Overall diameter mm 318
Mounting holes diameter mm 8 x (7 x 8)
Bolt circle diameter mm 300
Baffle cut-out diameter mm 283
Overall depth mm 145
Net weight kg 3.5