MONACOR SP-45/8
4Ω
8Ω
Mid-range
Nominal diameter | 3″ / 78 mm |
Resonance | 120 Hz |
Q factor | 0.55 |
Sensitivity | 87.3 dB |
Linear excursion | ± 0.8 mm |
Program Power | 40 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 87.3dB
- Frequency response 120 - 16000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 120Hz
- Mechanical quality factor QMS 2.82
- Electrical quality factor QES 0.68
- Total quality factor QTS 0.55
Large signal parameters
- Maximum linear excursion xmax 0.8mm
- Air volume displaced at xmax VD 2.3cm³
- Power handling P 20W
- Program power Pmax 40W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.5Ω
- Inductance (1kHz) LE 0.15mH
- VC Diameter 19mm
- Winding material Aluminium
Magnet
- Force factor Bl 3.4N/A
- Motor constant Bl/√RE 1.33N/√W
- Diameter 70mm
- Weight 0.15kg
Diaphragm
- Effective diameter 63mm
- Effective area SD 31cm²
- Moving mass MMS 1.6g
- Moving mass (without air load) MMD 1.5g
Suspensions
- Stiffness KMS 0.909N/mm
- Compliance CMS 1100µm/N
- Equivalent volume to the compliance VAS 1.5L
- Mechanical resistance RMS 0.43N·s/m
Dimensions
- Nominal diameter 3″
- 78 x 78mm
- Overall size 78 x 78mm
- Baffle cutout diameter 72mm
- Overall depth 43mm
- Flange thickness 0mm
- Mounting depth 43mm
- Volume occupied by the driver (estimated) 0.12L
- Net weight 0.411kg
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