8.5 inch 11 ohm Ceramic Bass / Midrange driver. For valve amps or parallel array.
The Accuton C220-11-221 Bass / Midrange is an esoteric 8.5 inch drive unit primarily intended for high end 2 and 3 way floor standing designs. The 11 ohm impedance makes this unit ideal for low powered valve amplification or for parallel connection.
This exotic driver features a ceramic (Sapphire) cone, soft rubber surround, large ferrite magnet and 38mm titanium coil former.
The spider, pole and voice coil former are fully ventilated for minimal compression. This unit has a substantial power rating of 150 watts and offers good midrange resolution / extension for a driver of this size.
Full datasheets can be downloaded from the bottom of this page.
Here are some box alignment examples:
Vb: 70L, Port diameter: 70mm, Length: 255mm, Fres: 23Hz, F-3dB: 30Hz, Q: 0.58 (optimal)
Vb: 116L, Port diameter: 70mm, Length: 100mm, Fres: 25.5Hz, F-3dB: 24Hz, Q: 0.50 (extended bass)
Vb: 58L, Port diameter: 70mm, Length: 235mm, Fres: 26Hz, F-3dB: 31Hz, Q: 0.61 (0.7dB Ripple @ 50Hz)
Vb: 39L, -4dB @ 40Hz, -18dB @ 20Hz, F-3dB: 43Hz, Q: 0.71 (typical)
Vb: 116L, -4dB @ 40Hz, -11dB @ 20Hz, F-3dB: 45Hz, Q: 0.50 (extended bass)
A matching passive radiator is available : Accuton P220
- Ultra hard ceramic cone (Corundum / Sapphire)
- 220mm diameter chassis with protective grille
- High power 38mm voice coil assembly
- Overhung motor, titanium VC former
- 32 Hz - 2 KHz in vented box
- Long throw max. 10mm
- Large ferrite magnet
|Resonant frequency (fs)
||DC resistance (Re)
|Mechanical Q factor (Qms)
|Electrical Q factor (Qes)
|Total Q factor (Qts)
|Equivalent volume (Vas)
Click icons to download :
Data 3D View (large file)
Built to order - contact us for a lead time.