All systems go ! Fountek NeoPro5i and NeoPro10i ribbon tweeters in UK stock.

All systems go ! Fountek NeoPro5i and NeoPro10i ribbon tweeters in UK stock.



Accuton C220-6-222 Ceramic Bass / Midrange

8.5 inch 6 ohm Ceramic Bass / Midrange. Neodymium magnet, high efficiency.

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The Accuton  C220-6-222  Bass / Midrange is an esoteric 8.5 inch drive unit primarily intended for 2 and 3 way floor standing loudspeaker designs.

This high end driver features a ceramic (Sapphire) cone and long throw soft rubber surround. The large Neodymium magnet and 55mm titanium voice coil former yield a high efficiency of 93dB with very low distortion levels whilst maintaining excellent midrange resolution. A high peak maximum excursion of 12mm ensures high sound levels without stress or loss of accuracy.

The spider, pole and voice coil former are fully ventilated for minimal compression and the low reflection diecast chassis has excellent strength. This driver has a substantial power rating of 150 watts.

Full datasheets can be downloaded from the bottom of this page.

Here are some box alignment examples:


Vb: 29L, Fres: 23Hz with passive radiator, -12dB @ 25Hz, Q: 0.47 (optimal A/V alignment)

Vb: 24L, Port diameter: 70mm, Length: 200mm, Fres: 43.5Hz, F-3dB: 47Hz, Q: 0.50

Vb: 36L, Port diameter: 70mm, Length: 145mm, Fres: 40Hz, F-3dB: 39Hz, Q: 0.43 (extended bass)

Infinite baffle:

Vb: 11.5L, -12dB @ 40Hz, F-3dB: 74Hz, Q: 0.71 (typical)

Vb: 24L, -9dB @ 40Hz, F-3dB: 75Hz, Q: 0.50 (extended bass)

A matching passive radiator is available :  Accuton P220

Key Features:

  • Ultra hard ceramic cone (Corundum / Sapphire)
  • 220mm diameter chassis with protective grille
  • High power 55mm voice coil assembly
  • Underhung motor, titanium VC former
  • 32 Hz - 2 KHz in vented box
  • Large Neodymium magnet
  • Long throw max. 12mm

Basic Parameters:

    Resonant frequency (fs) 24Hz DC resistance (Re) 6.7Ω
    Mechanical  Q factor (Qms) 4.4 Power handling 150W
    Electrical Q factor (Qes) 0.20 Sensitivity (2.83V/1m) 93dB
    Total Q factor (Qts) 0.19 Chassis diameter 220mm
    Equivalent volume (Vas) 115L Cutout diameter 191mm

    Click icons to download :

    .pdf iconData              .pdf icon3D View (large file)                                                                          

    .pdf iconDimensions

    Built to order - contact us for a lead time.

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