Active-Passive Monitor

SE AP-SW

Active-Passive Subwoofer System |  

The SE AP-SW employs a multi-chamber, multi-resonant architecture to achieve controlled low-frequency behavior without reliance on DSP correction.

Three active 8-inch woofers and three passive 8-inch radiators operate within six individually tuned enclosures, each aligned to a distinct resonant frequency. This distributes acoustic energy across the entire low-frequency spectrum, reduces localized resonance buildup, and stabilizes behavior in real rooms.

By managing resonance acoustically rather than suppressing it electronically, the AP-SW extends the AP Series with low-frequency reproduction that preserves timing coherence, spatial stability, and natural integration with the AP-1 and AP-2 monitoring systems.

Key Features

  • Passive subwoofer architecture with integrated high-performance analog amplification
  • Multi-chamber, multi-resonant acoustic design
  • Three active 8-inch woofers and three passive 8-inch radiators
  • Six individually tuned enclosures aligned to distinct resonant frequencies
  • Extended low-frequency response to 15 Hz (–6 dB)
  • Acoustic distribution of energy across the low-frequency range
  • Reduced localized resonance buildup in real-room environments
  • Controlled low-frequency behavior without DSP correction
  • Seamless integration with SE AP Series monitoring systems

Price

$11,995.00
USD Pricing applicable to the U.S. market.
Shipping and taxes calculated at checkout.
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Technical Specifications

Frequency Response 15 Hz – 60 Hz (–6 dB)
Crossover Frequency 60 Hz
Linearity ±1 dB relative to target curve
Max SPL 106 dB (40 – 50 Hz)
Distortion < 1 % @ 94 dB / 1 m
Dispersion > 120° (–6 dB)
Power Consumption 400 W max
Dimensions 70 × 55 × 50 cm (27.6 × 21.7 × 19.7 in)
Weight ≈ 50 kg (110 lbs)
Rather than concentrating low-frequency energy around a single dominant resonance, the SE AP-SW distributes acoustic loading across multiple tuned chambers to broaden energy release through the operating range. This helps excite room modes more evenly, reducing the sharp peaks and localized buildup typical of more conventional subwoofer alignments. With a 60 Hz crossover and broad low-frequency radiation, the AP-SW is engineered to support the SE AP Series Monitors with controlled integration, low distortion, and more stable low-frequency behavior across real-room placements.
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