GRS 18PT-8
8Ω
Woofer
| Nominal diameter | 18″ / 459 mm |
| Resonance | 23 Hz |
| Q factor | 0.54 |
| Sensitivity | 91.3 dB |
| Linear excursion | ± 6.8 mm |
| Program power | 700 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 91.3dB
- Frequency response 25 - 4000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 23Hz
- Mechanical quality factor QMS 9.59
- Electrical quality factor QES 0.58
- Total quality factor QTS 0.54
Large signal parameters
- Maximum linear excursion (one way) xmax 6.8mm
- Air volume displaced at xmax VD 839cm³
- Power handling P 350W
- Program power Pmax 700W
Voice Coil
- Nominal impedance Z 8Ω
- DC resistance RE 6.9Ω
- Inductance (1kHz) LE 1.9mH
- VC Diameter 76.5mm
- Winding height HVC 16mm
- Former material Kapton
Magnet
- Force factor Bl 19.5N/A
- Motor constant Bl/√RE 7.42N/√W
- Air gap height HAG 7mm
- Diameter 190mm
Diaphragm
- Effective diameter 396mm
- Effective area SD 1234cm²
- Moving mass (including air load) MMS 218g
- Moving mass MMD 188g
- Material Lightweight ribbed paper
Suspensions
- Stiffness KMS 4.55N/mm
- Compliance CMS 220µm/N
- Equivalent volume to the compliance VAS 467L
- Mechanical resistance RMS 3.29N·s/m
Dimensions
- Nominal diameter 18″
- 459mm
- Overall diameter 459mm
- Baffle cutout diameter 423mm
- Overall depth 190mm
- Flange thickness 12mm
- Mounting depth 178mm
- Volume occupied by the driver (estimated) 5.9L
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Export this driver to a box design software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
MfbLabs
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