Haut-parleur Bas Medium BMS 12N820
[12N820] |
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Features :
98dB sensitivity 1W/1m
800W Power handling
Extremely light weight of 5,4kg
4” 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 two or three way-systems
SPECIFICATIONS
APPLICATION Low-Middle
Nominal impedance Ohm 8
Power handling AES noise W 800
Sensitivity ( 1W/1m ) dB 98
Frequency response Hz 45 - 1700
Voive coil diameter mm 101.6 (4”)
Voice coil material Cu
Voice coil winding depth mm 19
Magnet gap depth mm 10
Basket Cast Aluminium
Effect. diaphragm diameter D mm 26
THIEL – SMALL PARAMETERS
Resonance frequency Fs Hz 37.5
DC resistance Re Ohm 5.70
Mechanical Q factor Qms 6.00
Electrical Q factor Qes 0.19
Total Quality factor Qts 0.18
Equivalent volume Vas L 80.90
Moving mass Mms kg 0.088
Mechanical compl. Cms mm/N 0.205
BL factor BL Tesla/m 25
Effective piston area Sd m2 0.0531
Max. linear excursion Xmax mm 4.5
Voice coil inductance Le1k μH 1.67
Le10k μH 0.61
MOUNTING INFORMATION
Overall diameter mm 315
Mounting holes diameter mm 7 x 8
Bolt circle diameter mm 300
Baffle cut-out diameter mm 283
Overall depth mm 154
Net weight kg 5.4
Recommended reflex enclosure:
8L/77Hz, -3dB=104Hz, BRD=70mm/178mm long
20L/64Hz, -3dB=70Hz, BRD=90mm/155mm long
Frequency response measured 100W (28.3V)@ 1m in a closed enclosure of 50 litre in an anechoic chamber incl. 2nd and 3rd harmonic distortion raised 20dB.
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