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18" 450W Raw Woofer Speaker with 4" Voice Coil, 100 oz Magnet, Replacement for PA/DJ Subwoofer, 8-ohm
18" 450W Raw Woofer Speaker with 4" Voice Coil, 100 oz Magnet, Replacement for PA/DJ Subwoofer, 8-ohm
STLF-1804-8
18" 450W Raw Woofer Speaker with 4" Voice Coil, 100 oz Magnet, Replacement for PA/DJ Subwoofer, 8-ohm
Sound Town






The Sound Town STLF-1804-8 is a 18" universal replacement woofer for PA/DJ speakers; it is compatible with the Sound Town PA subwoofers and subwoofers of other brands which need a 18" low-frequency driver. The woofer comes with 8-ohm impedance and has a frequency range of 34 Hz - 2 kHz. It is built in a pressed steel chassis and has a paper cone with cloth edge. With 450W RMS, 900W peak power handling capability, the STLF-1804-8 delivers massive and deep bass and makes a great replacement woofer for your 18-inch PA subwoofers.
- 18" pressed steel frame
- 450W RMS, 900W peak power handling at 8-ohm
- 34 Hz - 2 kHz frequency response
- 4" voice coil and one 100 oz magnet produces super sound

Details
Model | STLF-1804-8 |
Resonance | 34Hz |
Nominal Basket Diameter | 18" | Frequency Response |
34Hz - 2kHz |
Nominal Impedance | 8Ω | Sensitivity | 98dB |
Power Rating |
450W RMS | Magnet Weight | 100oz |
Peak Power | 900W Peak | Voice Coil Diameter | 4" VC |
Thiele & Small Parameters
Resonant Frequency (fs) | 34Hz | Compliance Equivalent Volume (Vas) | 133.5 liters |
DC Resistance (Re) | 7.0Ω | Mechanical Compliance of Suspension (Cms) | 56.67 mm/N |
Mechanical Q (Qms) | 2.717 | BL Product (BL) | 20.272 Tm |
Electromagnetic Q (Qes) | 1.012 | Diaphragm Mass Inc. Airload (MMs) | 199.88 g |
Total Q (Qts) | 0.737 | Surface Area of Cone (Sd) | 1288 cm2 |
Mounting Information
Efficiency Bandwidth | 46 |
Baffle Hole Diameter | 16.5", 420mm |
Sealed | 342.3 liters / 12.1 cu.ft. | Installation Position Diameter | 17.6", 448mm |
Vented | 430.6 liters / 15.2 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 |
Shipping Weight & Dimensions
Shipping Weight | 25.0 lbs | Shipping Dimensions | 19.3" x 19.3" x 9.3" |
Warranty/Certifications
Manufacturer Warranty | 1 year |