SP-1812AP SP-158AP SP-K615AP SP-K618AP SP-1563AP SP-156AP
SP-155AP SP-115APM SP-112APM SPM-155AP SPM-152AP SPM-122AP

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Self-powered Subwoofer. 500W power, single 15" Sub woofer powered system, bass reflex rectangular enclosure.
Pole mount socket on the top, full bridge output stage, high efficient output with low THD. Clip limiter, XLR balanced input jack and XLR balanced link output jack. 60Hz to 250Hz variable filter frequency. Phase shift select.30Hz low cut switch. 2000W peak with high level bass power extended to low frequency 45Hz.

  • Dedicated subwoofer system and especially designed for AV & DJ/KJ sound system.
  • The enclosure construction : "STK Standard"
  • Ultra tough, the scratch proof warnex texture coated
  • two side handles one on each side for easy repositioning.
  • Impact-resistant perforated metal grill with black color dust filter
  • Grace cosmetics and accept to optional painting color.
  • "SCP" STK caster option.
Model SP-K615AP
System configuration Powered Subwoofer
Components & Loading One SK15600 15", Bass-reflex
Operating Mode Active powered
Enclosure Material Plywood, MDF.
Enclosure Finish Black warnex texture coated
Frequency Response  
±3 dB 53Hz ~ 300Hz
-10 dB 45Hz ~ 350Hz
Axial Sensitivity(dB SPL, 1 watt @ 1m) 99
Recommended high pass frequency 50Hz
Nominal Input Impedance(ohms) 8 ohms
Power Handling(Watts, Continuius) 500
Power Handling(Watts, Peak) 2000
Calculated SPL Limit(Referenced to 1 m)  
Peak 132dB
Long Term 126dB
Optional Accessries STK Caster "SCP80"(80mm wheel), "SCP 100"(100mm wheel)
STK Pole "SPM35130"(35mm)
( ±0.13 inch / ±3 mm)
Height 526
Front width 475
Rear width 475
Depth 595
Shipping/CBM 0.1951
Net weight 36 kg
Shipping weight 40 kg
Max output Power(class AB full bridge)  
EIA @1KHz 1% THD 500W
FTC @THD+N=0.1% 470W
Frequency Response(X-Over Filter off) 10Hz ~ 30kHz
Frequency Response(X-Over Filter on) 10Hz at -1dB to 250Hz at-3dB
20Hz ~ 30 kHz
S/N Ratio (Filter: A-waiting.RMS) ≥ 91dB
Input Sensitivity (Att max) + 4dBu
Crossover Frequency Variable 60Hz to 250Hz 12dB/oct
Low cut Filter 30Hz 12dB/Oct
Phase select 1. 0 degree (switch out)
2. 180 degree (switch on)
Input impedance 10k ohm(unbalance), 20k ohm (balance)
Limeter threshold level + 6dBu @ 100Hz
Limiter control range + 18dBu @ 100Hz
Damping Factor LF ≥350
Controls LCF on/off, Phase shift, Amp gain knob, Frequency variable, AC switch.
Connectors Input/Through XLR Female jack/XLR Male jack
Indicators Power(green), Sig(green), LF clip(red)
Protection 1)short circuit, 2)current limiter, 3) DC detection,
4)Thermal cut off, 5) VDC cut off fuse.
Fan operating Low and high speed control
Power Requirements(1/3 power) 240 Watts
Mains power 110/220/230/240 AC 50/60Hz


*Specifications subject to change without notice

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