SP-218S SP-118S SP-118SL SP-215S SP-115S SP-4733N
SP-253N SP-212 SP-1563P SP-4730N SP-4730H SP-153H
SP-152H SP-152L SP-122H SP-122 SP-112 SP-115M
SP-112M SP-620CW SP-810CW SPM-155H SPM-152H SPM-122
SP-810CM SP-605CM SP-605CMT      
  Front View / Rear View
  Manual / Dimensions

The 118S dedicated subwoofer with 0ne 18” “SK” transducers in a vented trapezoidal enclosure.
The 118S Subwoofer is engineered to complement the STK Pro,Super,Music and Active series full range system.
35mm pole mount receptacle on the top can be useble with satellite speaker systems

  • Dedicated subwoofer system extend, 40Hz Response.
  • The enclosure construction: “STK STANDARD” 18mm plywood,18mm MDF with dado-cut joints and volted 3mm steel plate to both the top and one on each inside cabinet.
  • Recessed cups on the top accept the foot pads of an SP4733N or another Pro series Sub Woofer.
  • Ultra tough, the scratch proof warnex texture coated.
  • Impact-resistant perforated metal grill(1.5mm)with weather proof powder coated
  • 3 side handles one on each side and one rear side for easy repositioning.
  • “SCP” STK caster, “SPM” STK pole option.
System configuration Dedicated Subwoofer
Components & Loading SK181000F One 18", Vented
Operating Mode Passive
Enclosure material Plywood with MDF
Enclosure Finish Black warnex texture coated
Connectors Two neutrick speakon
Grille Powder coated perforated steel
Optional accessories 1. STK caster "scp80" or "scp 100"
2. STK pole "SPM35130"
( ±0.13 inch / ±3 mm)
Height: 592
Front width: 604
Rear width: 357
Depth: 754
Trapezoid angle(degrees) 20
Shipping/CBM 0.3895
Net weight 43 kg
Shipping weight 47.9 kg
Frequency Response  
±3 dB 30Hz ~ 200Hz
-10 dB 25Hz ~ 200Hz
Recommended High-Pass Frequency 30Hz
Axial Sensitivity(dB SPL, 1 watt @ 1m) 95
Nominal Input Impedance(ohms) 8
Power Handling(Watts, Continuous) 1000
Power Handling(Watts,Program/ Peak) 2000/4000
Max Calculated SPL (Referenced to 1 m)  
Peak 130.0
Long Term 124
Suggested System A STK VS-34
Suggested System B STK VS-20
*Specifications subject to change without notice.
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