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

  Front View / Rear View
  Manual / Dimensions

Real one for two systems with powerfull out put !!
The SP156AP is dual power full-range 300WX2 amplified enclosure with one 15” SK15300H low frequency drivers vented.
Designed for portable systems,the active stereo mode required from AV music and active parallel mode for distributed installation design.
The one power outputs dedicated to powering internal 15" LF driver with HF compression driver and the other one full range power outputs used to drive the Passive SP152H speaker or equivalent systems.

  • 2-Way full-range dual Amp active system.
  • High output and with very low THD and broadest bandwidth.
  • The one 2” SK60D exit compression drivers on a “SABS2” horn.
  • An internal crossover frequency is 2 KHz 12dB/Octave.
  • The STK "CIRCUIT PRO"protect to the HF driver from accidental overload.
  • Ultra tough, the scratch proof warnex texture coated.
  • Impact-resistant perforated Metal grill with weather proof powder coated.
  • 35mm pole mount receptacle on the bottom.
  • With or without flying hardware options for eyebolt joint.
Model SP-156AP
System configuration 2-Way full-range
LF Components & Loading One SK15300 15”, vented
HF Components & Loading One 2 inch voice coil compression driver
Operating Mode Active
Enclosure Material Plywood with MDF
Enclosure Finish Black Warnex texture coated
Grill Powder coated perforated steel
Frequency Response  
±3 dB 55Hz ~19kHz
-10 dB 43Hz ~ 20KHz
Recommended High-pass Frequency 50Hz
Axial Sensitivity(dB SPL, 1 watt @ 1m) 101
Nominal Input Impedance(ohms) 4-8
Power Handling(Watts, Continuius) Full range 300 (Internal)
Power Handling(Watts, Peak) Full range 1200 (Internal)
Calculated SPL Limit
(Referenced to 1 m)
Peak 131.8dB
Long Term 125.8dB
Normal Dispersion( degrees@-6dB ) Horizontal 85 °
Vertical 85 °
Optional Accessries STK Eye Bolt "seb08"
STK Stand "ST6180"
( ±0.13 inch / ±3 mm)
Height 704
Front width 480
Rear width 350
Depth 480
Shipping/CBM 0.258
Net weight 36.08kg
Shipping weight 40.56 kg
Output Power INT EXT
4 ohm 300W 300W
8 ohm 200W 200W
Power Bandwidth
(Ref.1kHz, THD+N=0.1%, +0/-1dB)
20Hz ~ 20kHz
Frequency Response
(Ref.1kHz 1 watt output, +1/-1.5dB)
20Hz ~ 30kHz
(Ref.1kHz, f=20Hz~20kHz)
Hum & Noise ≥70 dB
Input Sensitivity + 4 dBu
Damping Factor ≥300
Input impedance 10k ohm
Mode select ST/Parallel
Connectors Input 2 XLR
Connector output 1 Neutrick Type Speakon.
Cooling Variable speed Fan
Power Requirements 980 Watts
Special Features 1. sig LED, Cilp LED, PRT LED
2. Lowest in-rush trodial X-Former
3. STK 7 Way Full Circuit Protection
*Specifications subject to change without notice.
Copyright © 2007. stkpro.com All right reserved.
3F, 15, Majang-ro 543beon-gil, Gyeyang-gu, Incheon, Republic of Korea (Zip 21104)
Tel. 82-32-525-1788~1789 Fax. 82-32-525-1784   E-mail : stkcom@stkpro.com