Crucial and Compelling - The JBL SRX928S Dual 18-Inch Powered Subwoofer

The SRX928S is a dual 18-inch active subwoofer designed to complement SRX900 full-range sound reinforcement systems. The sub¬woofer houses two JBL 2279-1 18-inch woofers, featuring Differential Drive – JBL’s dual voice coil, dual gap technology – to deliver better heat dissipation, lower power compression, and wider dynamic range than conventional single-coil designs.

• High-performance, high-density system solution in a truck-pack friendly format
• High-power-handling transducers deliver low distortion, high fidelity, and class-leading output
• Built-in, passively cooled Class D amplification with a universal power supply
• Dual Ethernet ports with Neutrik etherCON connectors
• Supports HARMAN HControl Ethernet
• User-controllable DSP
• LevelMax limiting uses sophisticated excursion-control algorithms to protect transducers
• Rear-panel LCD provides complete access to control features
• Reinforced 18mm plywood enclosures

SPECIFICATIONS

Acoustical

• Frequency Range
• (-10 dB): 31 Hz - 100 kHz (array preset)
• (-3 dB): 39 Hz - 80 kHz (array preset)
• Coverage Pattern: Omnidirectional or Cardioid
• Maximum Peak Output: 140 dB
• System Type: Active subwoofer

Transducer

• Low Frequency: (1) JBL 2279G-1, 18 in diameter, 8 ohms, dual 3.0 in diameter voice coil, ferrite Differential Drive

Audio Input

• Input Type: Balanced line level
• Connectors: (2) Neutrik XLR (IN/OUT)
• Nominal Input Sensitivity: +6 dBu (system starts limiting with broadband noise and music
• Maximum Input Level: 21 dBu
• Input Impedance: 100 kΩ

Amplifier

• Type: Class-D
• Number of Channels: (2)
• Continuous Power: 1100 Watts LF: 400 Watts HF: 200 Watts
• Peak Power: 2500
• Cooling Type: Convection, external aluminum heat sink, internal on-demand fan

AC Power

• Voltage Range
• Nominal: 100-240 VAC, 50/60 Hz
• Limits: 80-260 VAC, 50/60 Hz
• Connectors: Dual (IN/OUT) Neutrik powerCON TRUE1 TOP
• Sample Rate: 48 kHz
• Bit Depth: 24 bit

Physical

• Enclosure: 18 mm plywood, Black DuraFlex finish, two integral recessed handles
• IP Rating: IP54
• Grille: Powder coated 1. 8mm (14-gauge) hex perforated steel with acoustically transparent black cloth backing
• Dimensions (H x W x D) : 565 x 1205 x 681 mm, 22.2 x 47.4 in 26.8 inches
• Net Weight: 70.3 kg (155 lbs)
• Shipping Weight: 81.8 kg (1 lbs)80

Manufacturer: JBL Professional
Model: SRX928S
SKU: I709120-GA250604-7-WHXE
UPC: 691991035586

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Since 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.

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