Oberton 12HCX

SPECIFICATIONS
    

Nominal diameter: 315 mm (12 in)
Impedance: LF 8 Ohm /HF 16 Ohm
Minimum impedance LF: 6.73 Ohm
Frequency range: 60 - 16000 Hz
Dispersion angle: 70 x 50 deg

LF unit:

Sensitivity (200-1000 Hz): 95.5 dB
Power Capacity AES ¹: 350 W
Program Power ²: 700 W
Voice Coil Diameter: 77 mm (3 in): Aluminium
Voice Coil Material: Kapton
Voice Coil Former: 15 mm
Voice Coil Winding Depth: 9 mm
Magnet Gap Depth: 9 mm
Cone Material: Paper with glassfiber
Basket: Die Cast Aluminium
Magnet: Neodymium
Flux Density: 1.1 T

HF unit

Minimum impedance HF: 11.59 Ohms
DC resistance: 10 Ohms
Sensitivity (1000-15000 Hz): 106 dB
Power capacity (1000-20000 Hz): 75 W
Program power: 150 W
Voice coil diameter: 72 mm (2.85 in)
Winding material: Aluminium
Diaphragm material: sandwich polyester
Flux density: 1.85 T
    

THIELE-SMALL PARAMETERS

Resonance Frequency: 52.61 Hz
Mechanical Efficiency Factor (Qms): 5.75
Electrical Efficiency Factor (Qes): 0.354
Total Q (Qts): 0.333
Equivalent Air Volume (Vas ): 55.54 L
Diaphragm mass ind. airload (Mms): 60.97 g
Voice Coil Resistance Re: 5.57 Ohms
Effective Diagram Area (Sd): 515 cm2
Peak Linear Displacement of Diaphragm (Xmax)*: ± 5.25 mm
Mechanical Compliance of Suspension (Cms): 0.15 mm/N
BL Product (BL): 17.82 T.m
V.C. Inductance at 1 kHz (Le): 0.61 mH
    

MOUNTING INFORMATION

Overall diameter: 315 mm (12 in)
Depth: 208 mm
Baffle hole diameter: 280 mm
Bolt circle diameter: 296/298mm
Number of mounting holes: 8 eliptic 7x8 mm
Net weight: 5.75 kg
    

1.  AES standard. Power is calculated on rated minimum impedance. Measurement is in 65 L box enclosure tuned 63 Hz using a 40-400 Hz band limited pink noise test signal applied continuously for 2 hours.
2.  Program power is defined as 3db greater than AES Power Capacity.
*  Linear Mathematical Xmax is calculated as: (Hvc - Hg)/2 + Hg/4 where Hvc is the voice coil depth and Hg is the gap depth.

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