REDCATT 81NPM
8Ω
Mid Bass
| Nominal diameter | 8″ / 210 mm |
| Resonance | 72 Hz |
| Q factor | 0.33 |
| Sensitivity | 91.2 dB |
| Linear excursion | ± 7.5 mm |
| Program Power | 400 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 91.2dB
Thiele & Small parameters
- Resonance frequency (free air) fS 72Hz
- Mechanical quality factor QMS 7.97
- Electrical quality factor QES 0.34
- Total quality factor QTS 0.33
Large signal parameters
- Maximum linear excursion (one way) xmax 7.5mm
- Air volume displaced at xmax VD 164cm³
- Power handling P 200W
- Program power Pmax 400W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 5.2Ω
- Inductance (1kHz) LE 0.5mH
- VC Diameter 76.2mm
- Winding height HVC 22.5mm
- Winding material Copper Clad Aluminium
- Former material kapton
Magnet
- Force factor Bl 16.7N/A
- Motor constant Bl/√RE 7.32N/√W
- Air gap height HAG 10.5mm
- Material Neodymium
Diaphragm
- Effective diameter 167mm
- Effective area SD 219cm²
- Moving mass MMS 40.5g
- Moving mass (without air load) MMD 38.1g
- Material Paper
Suspensions
- Stiffness KMS 8.26N/mm
- Compliance CMS 121µm/N
- Equivalent volume to the compliance VAS 10.3L
- Mechanical resistance RMS 2.3N·s/m
- Surround material Fabric
- Spider material Nomex
Dimensions
- Nominal diameter 8″
- 210mm
- Overall diameter 210mm
- Baffle cutout diameter 187mm
- Mounting depth 101mm
- Volume occupied by the driver (estimated) 1.4L
- Net weight 3.2kg
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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