Accuton C158-8-085 Midrange 8 Ohm 1 piece

The Accuton C158-8-085 is a 6.25" bass-midrange driver for small bookshelf monitors or slim floorstanding speakers. It features a small and lightweight voice coil with 25mm titanium voice coil former, which provides high resolution in the midrange. The long excursion design ensures the best SPL capabilities.

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Short Description:

15 cm bass-midrange driver with ceramic cone. It has a rear-vented voice coil.

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Mechanical data:

Overall diameter / front panel 158 mm

cut-out 137 mm

minimum front panel thickness 6 mm

overall height 82 mm

Magnet height 34 mm

Magnet diameter 85 mm

Screw holes For screws According to Din 7984 / Ø 4.50 mm

Weight (pair) 3.4 Kg

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Thiele-Small Parameter:

Sensitivity Spl 87.5 dB

Resistance(DC) Re 8.1 Ohm

Free air resonance frequency Fs 37 Hz

Equivalent volume Vas 27.3 Ltr

Mechanical quality Qms 4.91

Electrical Q factor Qes 0.39

Overall quality Qts 0.36

Effective diaphragm area Sd 113 cm2

Moving mass Mms 12.1 G

Membrane stress compliance Cms 1.5 mm/N

Mechanical resistance

Rms 0.58 Kg*S

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Voice coil parameters:

Power handling P 100 Watt

Impedance 8 Ohm

Linear excursion Xmax +/-5 mm

Voice coil diameter 25 mm

Voice coil carrier material Ti

Conductor material Cu

Voice coil inductance Le 0.54 mH

Force factor Bl 7.7 N/A

Drive type Overhanging

Ferrofluid In air gap No

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Enclosure Recommendation Closed:

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)

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Enclosure Recommendation Bass Reflex:

Vb: 15L, port diameter: 50mm, length: 190mm, Fres: 41Hz, F-3dB: 45Hz, Q: 0.58 (typical).

Vb: 22L, terminal diameter: 50mm, length: 130mm, Fres: 40Hz, F-3dB: 40Hz, Q: 0.50 (extended bass)

Vb: 12L, terminal diameter: 50mm, length: 200mm, Fres: 45Hz, F-3dB: 49Hz, Q: 0.61 (0.7dB ripple @ 100Hz)