Scan-Speak 18W/8545K00
8Ω
Mid Bass
Nominal diameter | 8″ / 180 mm |
Resonance | 28 Hz |
Q factor | 0.28 |
Sensitivity | 87 dB |
Linear excursion | ± 6.5 mm |
Program Power | 170 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 87dB
- Frequency response 28 - 3000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 28Hz
- Mechanical quality factor QMS 5.20
- Electrical quality factor QES 0.30
- Total quality factor QTS 0.28
Large signal parameters
- Maximum linear excursion xmax 6.5mm
- Maximum excursion before damage xlim 10mm
- Air volume displaced at xmax VD 94cm³
- Power handling P 100W
- Program power Pmax 170W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.5Ω
- Inductance (1kHz, estimated) LE 0.91mH
- VC Diameter 42mm
- Winding height HVC 19mm
- Former material Glass Fiber
Magnet
- Force factor Bl 8.2N/A
- Motor constant Bl/√RE 3.5N/√W
- Air gap height HAG 6mm
Diaphragm
- Effective diameter 136mm
- Effective area SD 145cm²
- Moving mass MMS 20.5g
- Moving mass (without air load) MMD 19.2g
- Material Paper/Carbon Fibre
Suspensions
- Stiffness KMS 0.633N/mm
- Compliance CMS 1580µm/N
- Equivalent volume to the compliance VAS 46.4L
- Mechanical resistance RMS 0.69N·s/m
- Surround material SBR Rubber
Dimensions
- Nominal diameter 8″
- 180mm
- Volume occupied by the driver 0.54L
- Net weight 2.3kg
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