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Accuton BD50-6-039 Diamond Dome Tweeter

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The Accuton BD50-6-039 is a 50mm midrange / tweeter with a CVD diamond dome in a 106 mm square chassis.

CVD is an acronym for Chemical Vapour Deposition, a very complex process whereby a diamond is synthesized by deposition from a mixed gas (usually hydrogen and methane) onto a substrate at a temperature of around 800°C.

As the diamond dome is incredibly hard, the breakup frequency is at an astonishing 30 kHz and is way outside the audible spectrum, therefore no damping of the dome is required.

CVD diamond is the hardest known material and offers unsurpassed rigidity as a domed diaphragm. The electrical energy to transient sound conversion is the most accurate offering a new level transparency and resolution.

The BD50-6-039 features an FEA optimized underhung motor comprising a powerful Neodymium magnet and a vented aluminium voice coil former guaranteeing minimal energy wastage and excellent heat transfer.

This tweeter has an incredibly wide frequency range of  800 Hz - 30kHz.

We recommend a crossover frequency above 800 Hz / third order 18dB.

This exquisite tweeter is hand built to order - please contact us for a lead time.

Key Features:

  • Ultra hard 50mm CVD Synthetic Diamond dome
  • 106mm square faceplate with protective grille
  • Vented pole piece and voice coil former
  • Dome resonance above audibility@ 30kHz
  • Underhung motor, no ferrofluid in VC gap
  • Neodymium magnet system

Basic Parameters:

    Resonant frequency (fs) 290 Hz DC resistance (Re) 5.8 Ω
    Effective dome diameter 50mm Power handling 120W
    Ferrofluid ? Y/N No Faceplate diameter/square 106mm
    Recommended crossover 800 Hz< Overall depth 67.5mm
    Sensitivity (2.83V/1m) 93dB Cutout diameter/square 88mm

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    Built to order - please contact us for a lead time.