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| Part Number | FSL-1830R09-04 | 
| Description | FSL 18 WOOFER3INCH VCSTEEL BA | 
| Manufacturer | Peerless by Tymphany | 
| Series | FSL | 
| Part Status | Active | 
| Technology | Magnetic | 
| Type | Woofer | 
| Frequency Range | 40Hz ~ 400Hz | 
| Frequency - Self Resonant | 27.8Hz | 
| Impedance | 4.3 Ohms | 
| Efficiency - dBA | 91.90 | 
| Efficiency - Testing | 1W/1M | 
| Efficiency - Type | Half Space Sensitivity | 
| Power - Rated | 800W | 
| Power - Max | - | 
| Port Location | Top | 
| Shape | Round | 
| Material - Cone | Paper | 
| Material - Magnet | Ferrite | 
| Ingress Protection | - | 
| Ratings | - | 
| Termination | Solder Eyelet(s) | 
| Size / Dimension | 18.134" Dia (460.60mm) | 
| Height - Seated (Max) | 8.796" (223.42mm) |