สั่งซื้อ
Dual18"bass reflex sub
JBL STX828S DUAL 18" BASS REFLEX SUBWOOFER
ตู้ลำโพงซับเบส 18"x 2
OVERVIEW
A dual 18" high power subwoofer system in a front-loaded, vented enclosure designed for maximum low-frequency performance. The STX828 has an optional wheel kit. Two drivers give 2,000 watts of continuous pink noise power handling, 4kW program and 8 kW peak.
The STX828S is a high power subwoofer system containing two 2242H patented Super Vented Gap Cooled™ 18" woofers in a frontloaded, vented enclosure. The enclosure is designed to present a minimum frontal area. The system offers complete input connection flexibility for compatibility with a variety of cabling schemes. A recessed, external switch allows selection of either contacts +1/-1 or +2/-2. By relocating an internal connector, it is also possible to drive each woofer discretely from a separate amplifier channel. The enclosure is constructed of top quality birch/poplar laminate plywood and coated in JBL’s rugged DuraFlex™ finish. Each woofer is housed in an isolated chamber and the enclosure is heavily braced to maximize lowfrequency performance. The attractive CNC-machined, 14-gauge steel grille is internally lined with acoustically transparent cloth to provide additional driver protection and give a very professional appearance.
FEATURE
- - Dual 18 in. Super Vented Gap™ woofers for extended low frequency output.
- - Dual 18 in. Super Vented Gap™ woofers for extended low frequency output.
- - Rugged DuraFlex™ coated enclosures sized to be truck pack friendly.
- - 14-Gauge steel grille lined with acoustically transparent cloth.
SPECIFICATION
Frequency Range (-10 dB): 32 Hz – 250 Hz
Frequency Response (±3 dB): 37 Hz – 120 Hz
Input Connection Modes: Switchable, +1/-1 or +2/-2 Internally selectable, Parallel or Discrete
Recommended Crossover Frequencies: 30 Hz, 24 dB / octave HPF
80 Hz, 24 dB / octave LPF
Power Rating
(Continuous1 / Program / Peak): Parallel: 2000 W / 4000 W / 8000 W
Maximum SPL2 : 138 dB SPL peak
Sensitivity (1w @ 1m): 99 dB SPL
LF Driver: 2 x JBL 2242H 457 mm (18 in) Super Vented Gap Cooled™ woofers
Nominal Impedance: Parallel: 4 ohms
Discrete: 8 ohms x 2
Active Tunings: Designed for Crown amplifiers and dbx DriveRack. Settings available at www.jblpro.com
Enclosure: Rectangular, 18 mm, 13-ply birch/poplar plywood
Transport: 4 side handles, 4 side grip points
Finish: Black DuraFlex finish
Grille : Powder coated, black, 14-gauge perforated steel with acoustical transparent cloth backing. Removable JBL badge and punched JBL logo.
Input Connectors: Neutrik® Speakon® NL-4 (x2)
Dimensions (H x W x D): 564 mm x 1137 mm x 714 mm (22.2 in x 44.8 in x 28.1 in)
Net Weight: 82 kg (180 lb)
Optional Accessories: For covers, go to www.jblbags.com
1 40 Hz to 120 kHz pink noise with 6 dB crest factor, 2 hours duration.
2 Calculated based on power rating and sensitivity. .
