Oberton 18NXB1601

SPECIFICATIONS

THIELE-SMALL PARAMETERS

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

18"/461 inch/mm
8 Ohm 
6.89 Ohm
1600 W
3200 W
depends on the horn
30 - 250 Hz
115 mm (4.5”)
Copper
Glassfiber
32 mm
14 mm
Paper with carbon fibers
Die cast aluminium
Neodymium
1.1 T

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)

34.64 Hz
5.75
0.301
0.286
146.23 Litres
248.5 grams
5.18 Ohms
1158 cm²
± 12.5 mm
0.0849 mm/N
30.48 T.m
1.20 mH

MOUNTING INFORMATION 

1.  AES standard. Power is calculated on rated minimum impedance. Measurement is in 180 L box enclosure tuned 43 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.

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

461 mm
416 mm
8 eliptic 7 x 8,5 mm
438/441 mm
224 mm
11.7 kg