| Specification | Wert | Einheit | |
| Overall diameter | 158 | mm | |
| Cutout Diameter/Square | 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 | |
C158-8-085 Ceramic Bass-Midrange
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.
| Dome material | Ceramic |
| Application | Bass‑Midrange |
| Overall diameter | 158 MM |
| Cutout Diameter/Square | 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
Mechanical Data
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 |
Schwingspulenparameter
| 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]
Harmonic Distortion [%]
