The EAW SB528zP is a powerful, 1400W, dual 18-inch passive subwoofer designed to provide exceptional low-frequency reinforcement in demanding professional environments. Part of EAW’s renowned SB series, the SB528zP is engineered to deliver high output while maintaining the sonic clarity and precision required for the most challenging applications. Whether used in large houses of worship, theaters, cinemas, f/x reinforcement, or large dance clubs, the SB528zP delivers deep, punchy bass that can fill expansive spaces with powerful sound. The subwoofer’s dual 18-inch cone drivers are designed to deliver the low-end frequencies with an impactful, “fatter” sound, making it ideal for installations where the low-frequency performance of much larger systems is required in a more compact, efficient form factor.

The SB528zP features a vented enclosure that maximizes airflow, reducing distortion and allowing the subwoofer to operate efficiently even at high output levels. The subwoofer operates across an impressive frequency range of 27 Hz to 147 Hz, ensuring deep sub-bass reproduction that complements full-range loudspeakers. The dual 18-inch drivers deliver high output and low-frequency extension, achieving an average SPL of 129 dB (whole space) and 135 dB peak (whole space), with an average SPL of 135 dB (half space) and a peak SPL of 141 dB (half space). This makes the SB528zP suitable for large venues that demand dynamic and high-impact bass, while maintaining consistency and clarity across the entire frequency range.

Designed for use with modern digital signal processing (DSP) systems, the SB528zP is optimized to ensure the best possible performance. EAW recommends using their MX Series processors for crossover and equalization to maximize the subwoofer’s output and maintain clarity. The subwoofer’s high-pass filter at 25 Hz with a 12 dB/octave Butterworth slope helps protect the drivers and ensures that the subwoofer performs optimally within its designed frequency range. The impedance of the SB528zP is nominally 4 ohms for each driver, with a minimum of 3.9 ohms at 131 Hz, allowing it to work seamlessly with most professional amplifiers.

The SB528zP is built to withstand the demands of permanent installation in professional settings. Its enclosure is constructed from Baltic birch plywood, known for its strength, durability, and resonance control. This helps ensure that the subwoofer delivers consistent performance over the long term. The subwoofer’s wear-resistant textured black finish makes it both durable and visually appealing, blending seamlessly into a wide variety of installation environments. The powder-coated perforated steel grille protects the dual 18-inch drivers while allowing optimal sound dispersion. With dimensions of 30.19 x 50.69 x 24.56 inches and a weight of 215 lbs, the SB528zP is a robust, large-format subwoofer capable of delivering powerful and precise bass across expansive spaces.

Features

• 1400W passive dual 18-inch subwoofer for high-output, deep bass reproduction
• Vented, optimally tuned enclosure for reduced distortion and efficient performance
• Operating range from 27 Hz to 147 Hz, providing full-range low-frequency reproduction
• Maximum SPL of 141 dB (peak) in half space and 135 dB (peak) in whole space for powerful bass output
• Axial sensitivity of 103 dB (half space) and 97 dB (whole space) for consistent low-frequency performance
• 4-ohm nominal impedance with a minimum of 3.9 ohms at 131 Hz for compatibility with most amplifiers
• Works with EAW MX Series processors for optimal DSP crossover and equalization
• High-pass filter at 25 Hz with 12 dB/octave Butterworth slope for system protection and optimal performance
• Ideal for large houses of worship, theaters, cinemas, dance clubs, and other large venues
• Built from durable Baltic birch plywood with a wear-resistant textured black finish
• Powder-coated perforated steel grille for driver protection and optimal sound dispersion
• Dimensions: 30.19 x 50.69 x 24.56 inches; Weight: 215 lbs for high durability and reliable performance
• Includes dual-amp and single-amp modes for flexible amplifier configurations

Specifications

Configuration

• Subsystem: 2 x 18-inch cone, vented
• Operating Mode:
  • Single-amp LF1/LF2
  • Dual-amp LF1, LF2
• Amplifier Channels: LF1/LF2
• External Signal Processing: DSP w/1-way filter

Performance

• Operating Range: 27 Hz to 147 Hz
• Nominal Beamwidth: Horizontal 360, Vertical 360
• Axial Sensitivity (SPL):
  • LF1/LF2 (whole space): 97 dB (27 Hz to 147 Hz)
  • LF1/LF2 (half space): 103 dB (27 Hz to 147 Hz)
• Input Impedance (ohms):
  • LF1/LF2 (Nominal): 4
  • LF1/LF2 (Minimum): 3.9 @ 131 Hz
  • LF1, LF2 (each, Nominal): 8
  • LF1, LF2 (each, Minimum): 7.8 @ 131 Hz
• Recommended High Pass Filter: High Pass => 25 Hz, 12 dB/octave Butterworth
• Accelerated Life Test:
  • System (LF1/LF2): 75V (1400 W @ 4 ohm)
  • LF1, LF2 (each): 75V (700 W @ 8 ohm each)
  • Transducer (AES): 1000W
• Calculated Axial Output Limit (SPL):
  • LF1/LF2 (whole space): 129 dB (Average), 135 dB (Peak)
  • LF1/LF2 (half space): 135 dB (Average), 141 dB (Peak)

Enclosure

• Material: Baltic birch plywood
• Finish: Wear resistant textured black paint
• Grille: Powder-coated perforated steel
• Dimensions (HWD): 30.19 x 50.69 x 24.56 inches
• Weight: 215 lbs