Dual 18” High-Power Subwoofer


Dual 18” High-Power Subwoofer

VPX728S is a dual 18” high power subwoofer system designed for live music, speech and pre-recorded applications and for use with full-range satellite speakers.

VPX728S uses two 18” (457mm) JBL 2044H woofers in a front vented enclosure to reproduce low bands with extended frequency response and low distortion, and to stand continuous power up to 1000Watts. When placed in a standing position, a full range speaker can be stacked on its top without the need for an additional pole.

The subwoofer system offers compatibility with a variety of cabling schemes. A pair of Neutrik® Speakon® NL-4 connectors are provided and are shipped with pins +1/-1 connected to the woofer. To meet different cabling requirements, the woofer can also be re-configured to work through pins +2/-2.

VPX728S provides two handles for easy transit and set-up. Its enclosure is made from premium plywood, finished in rugged DuraFlex™ coating and braced to maximize low frequency performance. The CNC-machined 16-gauge steel grille is backed with acoustically transparent fabrics to provide additional driver protection and give a very professional appearance."


  • Dual 18” JBL 2044H woofer for extended low frequency output
  • Large vent port for reduced distortion
  • Enclosure constructed of premium plywood and finished in black DuraFlex™ coating
  • Heavy-duty 16-gauge protective screen backed steel grille
  • Vertical orientation for convenient ground stacking
  • Sound reinforcement for live music and speech or pre-recorded applications
  • For use with full-range satellite speakers


  Version Language Size Uploaded
Spec Sheets
file type icon VPX728S Spec Sheet - Eng
updated: 12月 2019
    628.8 KB 12月 2019
file type icon VPX728S Spec Sheet - Cn
updated: 12月 2019
    809.2 KB 12月 2019

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Parts & Service


频率范围 (-10dB) 35 Hz - 250 Hz
Frequency Response (±3 dB) 40 Hz - 250 Hz
Input Connection Modes Internally configurable, +1/-1 or +2/-2
Recommended Crossover 80 - 120 Hz, 24 - 48 dB/octave
Power Rating(Continuous/Program/Peak) 1000 W/2000 W/4000 W, 2 hrs 800 W/1600 W/3200 W, 100 hrs
Maximum SPL (1m) 133 dB continuous (139 dB peak)


97 dB SPL; 103 dB SPL
低频驱动单元 2 × 18” (457 mm) JBL 2044H woofer
标称阻抗 4 Ohms
Enclosure Rectangular, 18 mm, plywood
外观颜色 Black DuraFlexTM finish
网罩 Powder coated, black, 16-gauge perforated steel with acoustically transparent black screen backing
输入接口 2 × Neutrik® Speakon® NL-4
尺寸(高 x 宽 x 厚) 1080 mm × 533 mm × 700 mm (42.5 in × 21.0 in × 27.6 in)
净重量 54.16 Kg (119.4 lbs)


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