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Oberton
Oberton 8CX - 8 inch 250W 8/16 Ohm *** B-GRADE STOCK ***
SPL: 95.5dB Fs: 76Hz Xmax: 5.3mm
 
Product Code: GRD1835 | Brand: Oberton

   
CLEARANCE:
£88.00
was £139.13
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Mainland UK DELIVERY:
£7.43
European Delivery Prices

Qty:
Oberton 8CX - 8" 250W 8/16 Ohm *** B-GRADE STOCK ***

item Condition: B Grade - Very Good Condition - Item may look slightly used.
Used for proto-typing, so light voice coil use, but driver looks used.
Packaging: Not in original box - reboxed in suitable packaging for delivery to you.
Full Manufacturer's 12 Month Warranty.

The 8CX is a 8" / 1" coaxial transducer designed for use in compact reflex enclosures with a nominal dispersion of 100 degrees. The low profile, smooth curvilinear LF cone provides smooth response within its intended frequency range. A waterproof protective coating allows application in a wide range of environments. The state-of-the-art 51 mm (2 in) LF voice coil has Kapton former, which together with high temperature resistant resin ensure high reliability by high power.


A double aluminium demodulating rings reduce distortion and inductance and improve transient response.

The special cone made of cellulose with carbon fibers improves waterfall response.


The 1" exit compression driver adopted is our D2544 model. The HF driver diaphragm assembly, using triple layer polyester dome this together with phasing plug improve linearity of frequency response in high end. Because of design with single magnet assembly the speaker has light weight and compact size.


Key Features

  • 95.5 db SPL 1W / 1m ( LF ) average sensitivity
  • 51 mm ( 2') high temperature voice coil ( LF )
  • 400 W AES program power ( LF )
  • Double aluminium demodulating rings
  • Single magnet assembly
  • Double silicone spider
  • Water protected cone (front)
  • 1' exit HF compression driver
  • 44 mm (1.75') HF high temperature voice coil
  • 100 degrees nominal dispersion

  • Specifications

    • Nominal diameter - 210 mm (8 in)
    • Impedance - LF 8 Ohm /HF 16 Ohm
    • Minimum impedance LF - 6.25 Ohm
    • Frequency range - 70 - 20000 Hz
    • Dispersion angle - 100 deg

    LF unit

    • Sensitivity (200-2000 Hz) - 95.5 dB
    • Power Capacity AES ¹ - 200 W
    • Program Power ² - 400 W
    • Voice Coil Diameter - 51 mm (2 in
    • Voice Coil Material - Aluminium
    • Voice Coil Former - Kapton
    • Voice Coil Winding Depth - 14 mm
    • Magnet Gap Depth - 7 mm
    • Cone Material - Paper with carbon fibers
    • Basket - Die Cast Aluminium
    • Magnet - Ferrite
    • Flux Density - 0.91 T

    HF unit

    • Minimum impedance HF - 12.37 Ohms
    • DC resistance - 10.6 Ohms
    • Sensitivity (1000-15000 Hz) - 107 dB
    • Power capacity (1000-20000 Hz) - 40 W
    • Program power - 80 W
    • Voice coil diameter - 44 mm (1.75 in
    • Winding material - Aluminium
    • Diaphragm material - sandwich polyester
    • Flux density - 1.9 T

    Thiele-Small Parameters


    • Resonance Frequency - 76.07 Hz
    • Mechanical Efficiency Factor (Qms) - 4.28
    • Electrical Efficiency Factor (Qes) - 0.44
    • Total Q (Qts) - 0.40
    • Equivalent Air Volume (Vas ) - 16.84 L
    • Diaphragm mass ind. airload (Mms) - 14.52 g
    • Voice Coil Resistance Re - 5.68 Ohms
    • Effective Diagram Area (Sd) - 202 cm2
    • Peak Linear Displacement of Diaphragm (Xmax)* - +/- 5.25 mm
    • Mechanical Compliance of Suspension (Cms) - 0.301 mm/N
    • BL Product (BL) - 9.43 T.m
    • V.C. Inductance at 1 kHz (Le) - 0.638 mH

    Mounting Information


    • Overall diameter - 225 mm (8 in)
    • Depth - 121 mm
    • Baffle hole diameter - 187 mm
    • Bolt circle diameter - 210 mm
    • Number of mounting holes - 8 with dia 6.5 mm
    • Net weight - 4.5 kg

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