$114.99 $149.99

The Sound Town STLF-1890 is an 18” universal replacement driver for PA/DJ woofers. It is compatible with Sound Town PA speakers (subwoofers) and compatible with other brand speakers with an 18” subwoofer. The subwoofer comes with a 8-ohm impedance and has a frequency range of 35-3K Hz with a sensitivity of 98dB. It has a built-in pressed steel chassis and has a paper cone with cloth edge. With 400W RMS power handling capability, the STLF-1890 delivers a massive and deep bass, and makes a great replacement woofer for your 18-inch PA/DJ speakers or subwoofer cabinets.

  • 18” Pressed Steel Frame
  • 3” Voice Coil and 90-oz Magnet Produces Superb Sound
  • 400W RMS Power Handling Capability

Sound Town STLF-1890 18" Raw Woofer Speaker, 400 Watts Pro Audio PA DJ Replacement Subwoofer Low Frequency Driver - Size, Dimensions, Mounting Info, Enclosure Volume Recommendation

Sound Town STLF-1890 18" Raw Woofer Speaker, 400 Watts Pro Audio PA DJ Replacement Subwoofer Low Frequency Driver - SPL vs. Frequency Graph


Model STLF-1890 Resonance 40Hz
Nominal Basket Diameter 18" Frequency Response
Nominal Impedance Sensitivity 98±3dB
Power Rating
400W RMS Magnet Weight 90 OZ
Peak Power 800W Peak Voice Coil Diameter 3.0" VC

Thiele & Small Parameters

Resonant Frequency (fs) 40Hz Compliance Equivalent Volume (Vas) 473.7 Ltr
DC Resistance (Re) 6.3Ω Mechanical Compliance of Suspension (Cms) 173.9 mm/N
Mechanical Q (Qms) 3.62 BL Product (BL) 13.75 Tm
Electromagnetic Q (Qes) 0.840 Diaphragm Mass Inc. Airload (MMs) 111.8 g
Total Q (Qts) 0.685 Surface Area of Cone (Sd) 1385 cm2

Mounting Information

Overall Diameter 18.1", 460 mm Mounting Holes Diameter 8-0.31", 8-8 mm
Depth 7.76", 197 mm Net Weight 18.9 lbs, 8.6 kg
Baffle Hole Diameter 16.53",420mm Shipping Weight 22.2 lbs, 10.1 kg
Installation Position Diameter 17.6", 446mm    

Materials of Contruction

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 Pressed Steel    

Dimension & Weight

Product Width (in.) ∅18.1" Package Width (in.) 20.5"
Product Height (in.) --" Package Height (in.) 9.8"
Product Depth (in.) 7.9" Package Depth (in.) 19.1"
Product Weight (lb.) 18.9 lbs Package Weight (lb.) 22.2 lbs



Manufacturer Warranty 1 year

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