JBL 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.”

Specifications

Frequency Range (-10 dB)	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 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	133 dB continuous (139 dB peak)
Sensitivity (1w@1m)	97 dB SPL; 103 dB SPL
LF Driver	2 × 18” (457 mm) JBL 2044H woofer
Nominal Impedance	4 Ohms
Mounting	Top mounted 35 mm socket for optional SS3-BK pole
Enclosure	Rectangular, 18 mm, plywood
Finish	Black DuraFlexTM finish
Grille	Powder coated, black, 16-gauge perforated steel with acoustically transparent black screen backing
Input Connectors	2 × Neutrik® Speakon® NL-4
Dimensions (H × W × D)	1080 mm × 533 mm × 700 mm (42.5 in × 21.0 in × 27.6 in)
Net Weigh	54.16 Kg (119.4 lbs)

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