STLF-1804-4 | 18" 800W Raw Woofer Speaker with 4" Voice Coil, 100 oz Magnet, Replacement for PA/DJ Subwoofer, 4-ohm
Sound Town
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| Model | STLF-1804-4 |
Resonance | 34Hz |
| Nominal Basket Diameter | 18" | Frequency Response |
34Hz - 2kHz |
| Nominal Impedance | 4Ω | Sensitivity | 98dB |
| Power Rating |
800W RMS | Magnet Weight | 100oz |
| Program Power | 1600W Program | Voice Coil Diameter | 4" VC |
Thiele & Small Parameters
| Resonant Frequency (fs) | 34Hz | Compliance Equivalent Volume (Vas) | 161.63 liters |
| DC Resistance (Re) | 3.6Ω | Mechanical Compliance of Suspension (Cms) | 0.069 mm/N |
| Mechanical Q (Qms) | 3.201 | BL Product (BL) | 16.855 Tm |
| Electromagnetic Q (Qes) | 0.755 | Diaphragm Mass Inc. Airload (MMs) | 243.73 g |
| Total Q (Qts) | 0.611 | Surface Area of Cone (Sd) | 1288 cm2 |
Mounting Information
| Efficiency Bandwidth | 51 |
Baffle Hole Diameter | 16.5", 420mm |
| Sealed | 367.3 liters / 12.96 cu.ft. | Installation Position Diameter | 17.6", 448mm |
| Vented | 489.8 liters / 17.26 cu.ft. | Mounting Holes Diameter | 8-0.24"x0.35", 6x9mm |
| Overall Diameter | 18.0", 458mm | Net Weight | 20.8lbs, 9.34kg |
| Depth | 7.52", 191mm |
Materials of Construction
| Coil Construction | Round copper | Cone Composition | Paper cone |
| Coil Former | Aluminum | Cone Edge Composition | Cloth edge |
| Magnet Composition | Ferrite | Dust Cap Composition | Paper cap |
| Basket Materials | Steel |
Dimension & Weight
| Product Width (in.) | ∅18.0" | Package Width (in.) | 19.3" |
| Product Height (in.) | 7.5" | Package Height (in.) | 9.3" |
| Product Depth (in.) | --" | Package Depth (in.) | 19.3" |
| Product Weight (lb.) | 20.8 lbs | Package Weight (lb.) | 25.5 lbs |
Warranty/Certifications
| Manufacturer Warranty | 1 year |