Audio System CO 08 QC EVO

4x2Ω

Subwoofer

Nominal diameter	8″ / 212 mm
Resonance	42 Hz
Q factor	0.49
Sensitivity	85.6 dB
Linear excursion	± 7.5 mm
Program Power	280 W

Audio System CO 08 QC EVO Subwoofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 85.6dB
Frequency response 40 - 200Hz

Thiele & Small parameters

Resonance frequency (free air) fS 42Hz
Mechanical quality factor QMS 4.80
Electrical quality factor QES 0.59
Total quality factor QTS 0.49

Large signal parameters

Maximum linear excursion (one way) xmax 7.5mm
Air volume displaced at xmax VD 155cm³
Power handling P 180W
Program power Pmax 280W

Voice Coil

Nominal impedance Z 16Ω
DC resistance RE 8.8Ω
Inductance (1kHz, estimated) LE 2.49mH
VC Diameter 38.6mm
Former material Aluminium

Magnet

Force factor Bl 13.4N/A
Motor constant Bl/√RE 4.52N/√W
Diameter 120mm

Diaphragm

Effective diameter 162mm
Effective area SD 206cm²
Moving mass MMS 46g
Moving mass (without air load) MMD 43.8g
Material Paper

Suspensions

Stiffness KMS 3.18N/mm
Compliance CMS 315µm/N
Equivalent volume to the compliance VAS 19L
Mechanical resistance RMS 2.53N·s/m
Surround material Rubber Elastomere
Spider material PPTA Connex

Dimensions

Nominal diameter 8″
212mm
Overall diameter 212mm
Baffle cutout diameter 177mm
Overall depth 106mm
Flange thickness 14mm
Mounting depth 92mm
Volume occupied by the driver (estimated) 1L
Net weight 2.6kg
Frame material Steel Sheet Metal

Export this driver to a simulation software:

Closed Box Simulator·

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