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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.

C158-06-085_DimWeb-Draht.png

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

TECHNOLOGY
Material
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Mechanical Data

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
   

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]

C158-6-085_FRQ_prog.png

Impedance [Ohm]

C158-6-085_IMP_prog.png

Harmonic Distortion [%]

C158-8-085_DIST_prog.png

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