12 SBS 250 MB

Mid Bass transducer reproducing high mid and is useful for both indoor and outdoor application. Suitable for both Sealed and Bass Reflex Enclosure.

Key Features
Program Power 500 W
Voice Coil 53 mm (2.08 in)
Response 54-6200 Hz
Sensitivity 1W/1M 94 dB


Nominal Diameter 314 mm
Nominal Impedance 16 Ω
Nominal Power Handling(AES) 250 W
Program Power 500 W
Sensitivity (1W/1m) 94 dB
Frequency Range 54-6200 Hz
Magnet Material Ferrite
Voice Coil Diameter 53 mm(2.08 in)
Winding Material COPPER
Former Material KAPTON
Winding Type Outside


Resonant Frequency FS 54 Hz
DC Resistance Re 11.5 Ω
Electrical Q Qes 0.65
Mechanical Q Qms 5.05
Total Q Qts 0.57
Compliance Equivalent Volume vas 60 Ltrs
Peak Diaphragm Displacement Volume Vd 0.37 Ltrs
Effective Surface Area of Cone Sd 518.7 cm^2
Reference Efficiency ƞo 1.40%
Moving Mass including air load Mms 54.20 gms
Motor Strength Bl 18.12 T-m
Voice Coil Inductance @ 1 KHz Le 1.55 mH
Efficiency Bandwith Product EBP 83 Hz
Voice Coil Overhang Xmax ±7.12 mm

Mounting Info

Overall Diameter 314 mm
Bolt Circle Diameter 296 mm
Baffle Cutout Diameter 282 mm
Depth 133 mm
Flange and Gasket Thickness 15 mm
Gross Weight 6.8 Kg.

Recone Kit

Recone Kit Number REC12SBS250MB
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