Oberton 8M250 - 8 inch 250W 8 Ohm
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Oberton
Oberton 8M250 - 8" 250W 8 Ohm
SPL: 99.5dB Fs: 74Hz Xmax: 2.8mm
 
Product Code: OBN8M250 | Brand: Oberton
Oberton 8M250 - 8 inch 250W 8 Ohm

Oberton 8M250 - 8 inch 250W 8 Ohm Oberton 8M250 - 8 inch 250W 8 Ohm Oberton 8M250 - 8 inch 250W 8 Ohm 
CLEARANCE:
£49.00
was £81.61
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£11.22 DELIVERY to mainland UK.
Oberton 8M250 - 8" 250W 8 Ohm

The 8M250 loudspeaker is combining high efficiency and 250W power capacity with use of 51 mm aluminium voice coil. It features aluminium die cast frame, 156 mm magnet structure and curvilinear paper cone. 8M250 is intended for use as a direct radiating or horn loaded midrange speaker.


     
  • 99.5 db 1W / 1m average sensitivity
  • 51 mm high temperature aluminium voice coil
  • 500 W AES program power
  • Powerful, ferrite 156 mm magnet structure

Specifications:


  • Nominal Diameter 8"/203mm 
  • Impedance 8 Ohm
  • Minimum Impedance 6.20 Ohm
  • Power Capacity AES ¹ 250 W
  • Program Power ² 500 W
  • Sensitivity (500-5000 Hz) 99.5 dB/W/m
  • Frequency Range 90 - 5000 Hz
  • Voice Coil Diameter 51 mm 
  • Voice Coil Material Aluminium 
  • Voice Coil Former Kapton™ 
  • Voice Coil Winding Depth 10 mm
  • Magnet Gap Depth 9 mm
  • Cone Material Paper with glassfiber
  • Basket Die cast aluminium
  • Magnet Strontium ferrite 
  • Flux Density 1.43 T

Thiele-Small Parameters:


  • Resonance Frequency 74.37 Hz
  • Mechanical Efficiency Factor (Qms) 14.01
  • Electrical Efficiency Factor (Qes) 0.204
  • Total Q (Qts) 0.201
  • Equivalent Air Volume (Vas ) 15.63 Liters
  • Diaphragm mass ind. airload (Mms) 16.38 Grams
  • Voice Coil Resistance Re 5.00 Ohms
  • Effective Diagram Area (Sd) 202 cm²
  • Peak Linear Displacement of Diaphragm (Xmax)* +/- 2.75 mm
  • Mechanical Compliance of Suspension (Cms) 0.280mm/N
  • BL Product (BL) 13.70 T.m
  • V.C. Inductance at 1 kHz (Le) 0.42 mH

Mounting Information:


  • Overall Diameter 225 mm
  • Baffle Hole Diameter  187 mm
  • Number of Mounting Holes 8 with dia. 6.5 mm
  • Bolt Circle Diameter 210 mm
  • Overall Depth 90 mm
  • Net Weight 4.3 kg

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