C158-8-085
Ceramic Bass-Midrange
| Dome material | CerAMIC |
| Application | Bass-Midrange |
| Overall diameter | 158 MM |
| Cutout Diameter | 137 MM |
| Overall depth | 82 MM |
| Motor assembly depth | 34 MM |
| Motor assembly diameter | 85 MM |
Main Features
overhung motor design
25 mm Titanium VC Former
Soft Rubber Surround
Vented VC, Pole Piece & Spider
38 HZ - 3 KHZ in vented Box
Technology
Material
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CLOSED BOX DESIGN PARAMETERS
Vb: 8.5L, -11dB @ 40Hz, F-3dB: 70Hz, Q: 0.71 (typical)
Vb: 22L, -8.5dB @ 40Hz, F-3dB: 70Hz, Q: 0.50 (extended bass)
VENTED BOX DESIGN PARAMETERS
Vb: 15L, Port diameter: 50mm, Length: 190mm, Fres: 41Hz, F-3dB: 45Hz, Q: 0.58 (typical)
Vb: 22L, Port diameter: 50mm, Length: 130mm, Fres: 40Hz, F-3dB: 40Hz, Q: 0.50 (extended bass)
Vb: 12L, Port diameter: 50mm, Length: 200mm, Fres: 45Hz, F-3dB: 49Hz, Q: 0.61 (0.7dB Ripple @ 100Hz)
HIGHLIGHTS
6.25 inch bass-midrange for small bookshelf monitors or slim floorstanders.
Small and light voice coil with 25mm titanium.
Voice coil former for high midrange resolution.
Long excursion design for high SPL capabilities.
Mechanical Data
| Specification | Value | Unit | |
| Overall diameter | 158 | mm | |
| Cutout diameter | 137 | mm | |
| Min. frontplate thickness | 6 | mm | |
| Overall depth | 82 | mm | |
| Motor assembly depth | 34 | mm | |
| Motor assembly diameter | 85 | mm | |
| Screwfitting | DIN 7984 / Ø 4.50 | mm | |
| Terminal | +: 6.3 x 0.8 / -: 4.8 x 0.8 | mm | |
| Shipping weight (pair)) | 3.4 | Kg | |
| Shipping box size (pair) | 200/200/250 | mm | |
Thiele Small Parameters
| Specification | Value | Unit | |
| Sensitivity (2.83V / 1m) | Spl | 87.5 | dB |
| DC-resistance | Re | 8.1 | Ohm |
| Resonance frequency | Fs | 37 | Hz |
| Equivalent volume of air | Vas | 27.3 | ltr |
| Mechanical Q | Qms | 4.91 | |
| Electrical Q | Qes | 0.39 | |
| Total Q | Qts | 0.36 | |
| Effective piston area | Sd | 113 | Cm2 |
| Moving mass | Mms | 12.1 | g |
| Suspension compliance | CMs | 1.5 | mm/n |
| Mechanical resistance | Rms | 0.58 | Kg*s |
voice coil parameters
| Specification | Value | Unit | |
| Power handling | P | 100 | W |
| Linear excursion | Xmax | +/-5 | mm |
| Voice coil diameter | 25 | mm | |
| Voice coil former material | Ti | ||
| Voice coil material | Cu | ||
| Voice coil inductance | Le | 0.54 | mH |
| Force factor | Bl | 7.7 | N/A |
| Motor type | Overhung | ||
| Ferrofluid filling | No | ||
Frequency Response [db]
Impedance [OHM]
Distortion [%]
