| Specification | value | Unit | |
| Overall diameter | 220 | mm | |
| Cutout Diameter/Square | 191 | mm | |
| Min. frontplate thickness | 9 | mm | |
| Overall depth | 105 | mm | |
| Motor assembly depth | 42 | mm | |
| Motor assembly diameter | 120 | mm | |
| Screwfitting | DIN 7984 / Ø 4.50 | mm | |
| Terminal | +: 6.3 x 0.8 / -: 4.8 x 0.8 | mm | |
| Shipping weight (pair) | 6.6 | Kg | |
| Shipping box size (pair) | 250/290/250 | mm | |
C220-6-221 Ceramic Bass-Midrange
Vented box design parameters
Vb: 51L, Port diameter: 70mm, Length: 265mm, Fres: 26.5Hz, F-3dB: 34Hz, Q: 0.58 (optimal)
Vb: 83L, Port diameter: 70mm, Length: 110mm, Fres: 29Hz, F-3dB: 28Hz, Q: 0.50 (extended bass)
Vb: 43L, Port diameter: 70mm, Length: 220mm, Fres: 31Hz, F-3dB: 35Hz, Q: 0.61 (0.7dB Ripple @ 50Hz)
Closed Box design parameters
Vb: 29L, -6dB @ 40Hz, -19dB @ 20Hz, F-3dB: 50Hz, Q: 0.71 (typical)
Vb: 83L, -4.5dB @ 40Hz, -13dB @ 20Hz, F-3dB: 60Hz, Q: 0.50 (extended bass)
Highlights
8.5 inch bass-midrange for2 or 3-way floorstanders.
Medium sized voice coil with 38mm titanium voice coil former for high midrange resolution.
Version with 6 OHM impedanz
| Dome material | Ceramic |
| Application | Bass‑Midrange |
| Overall diameter | 220 MM |
| Cutout Diameter/Square | 191 MM |
| Overall depth | 105 MM |
| Motor assembly depth | 42 mm |
| Motor assembly diameter | 120 mm |
Main Features
Overhung Motor Design
38 mm Titanium VC Former
Soft Rubber Surround
Vented VC, Pole Piece & Spider
32 HZ - 2 KHZ in vented Box
Mechanical Data
Thiele/Small Parameters
| Specification | value | Unit | |
| Sensitivity (2.83V / 1m) | Spl | 88 | dB |
| DC-resistance) | Re | 6.3 | Ohm |
| Resonance frequency | Fs | 26.3 | Hz |
| Equivalent volume of air | Vas | 86.2 | ltr |
| Mechanical Q | Qms | 7.1 | |
| Electrical Q | Qes | 0.42 | |
| Total Q | Qts | 0.40 | |
| Effective piston area | Sd | 224 | Cm2 |
| Moving mass | Mms | 30.4 | g |
| Suspension compliance | CMs | 1.20 | mm/n |
| Mechanical resistance | Rms | 0.71 | Kg*s |
voice coil parameters
| Specification | value | Unit | |
| Power handling | P | 150 | W |
| Linear excursion | Xmax | +/-5 | mm |
| Voice coil diameter | 38 | mm | |
| Voice coil former material | Ti | ||
| Voice coil material | Cu | ||
| Voice coil inductance | Le | 0.83 | mH |
| Force factor | Bl | 8.7 | N/A |
| Motor type | Overhung | ||
| Ferrofluid filling | No | ||
Frequency Response [DB]
Impedance [Ohm]
Harmonic Distortion [%]
