OBERTON 15B500

Nominal Diameter
Impedance
Minimum Impedance
Power Capacity AES ¹
Program Power ²
Sensitivity
Frequency Range
Voice Coil Diameter
Voice Coil Material
Voice Coil Former
Voice Coil Winding Depth
Magnet Gap Depth
Cone Material
Basket
Magnet
Flux Density

15"/388 inch/mm
8 Ohm 
6.39 Ohm
500 W
1000 W
(60-2000 Hz) 99 dB/W/m
38 - 2500 Hz
77 mm
Copper
Glassfiber
20 mm
11 mm
Paper
Die cast aluminium
Strontium ferrite
1.20

Resonance Frequency
Mechanical Efficiency Factor (Qms)
Electrical Efficiency Factor (Qes)
Total Q (Qts)
Equivalent Air Volume (Vas )
Diaphragm mass ind. airload (Mms)
Voice Coil Resistance Re
Effective Diagram Area (Sd)
Peak Linear Displacement of Diaphragm (Xmax)*
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
V.C. Inductance at 1 kHz (Le)

38.20 Hz
12.06
0.274
0.268
145.82 Litres
114.40 grams
5.23 Ohms
829.6 cm²
±7.25 mm
0.152 mm/N
22.91 T.m
1.25 mH

Overall Diameter
Baffle Hole Diameter 
Number of Mounting Holes
Bolt Circle Diameter
Overall Depth
Net Weight

388 mm
354 mm
8 eliptic 7x8 mm 
370/372 mm
169 mm
7.8 kg