PSI Audio Sub A225-M – Full Range Accurate Subwoofer for Reference Monitoring
The PSI Audio Sub A225-M is engineered to extend your monitoring system into the lowest frequencies with the same precision, neutrality and fidelity that PSI Audio is renowned for. This full-range active subwoofer reaches down to 24 Hz and is handcrafted in Switzerland with individual calibration in an anechoic chamber, each unit delivered with its own frequency-response certificate. :contentReference[oaicite:0]{index=0}
The Sub A225-M features a 100 % analogue signal path with no DSP, ensuring minimal phase distortion and maximum transparency. The dual-woofer design, powered by 480 W peak output using Class G/H amplifiers, produces a peak sound pressure level of 115 dB at one metre. This enables reliable low-frequency monitoring in professional environments including mixing, mastering, post-production and home listening systems. :contentReference[oaicite:1]{index=1}
The system integrates seamlessly with any PSI Audio monitor lineup. By engaging the bass roll-off on satellite monitors, you obtain a full-range system with consistent linear frequency and phase response down to 24 Hz. Optional R&B (Router & Bass management) matrix allows flexible integration into stereo and surround setups, though this option is not included as standard. :contentReference[oaicite:2]{index=2}
Designed for listening distances from approximately 1.5 m and beyond, the Sub A225-M is available in premium wood-cabinet finishes of Studio Red, Metal Black or Pure White to match your studio aesthetic. Its cabinet is built for acoustic stability and perfect integration with PSI Audio’s monitor systems. :contentReference[oaicite:3]{index=3}
For professionals who demand reference-class precision across the full frequency spectrum, the PSI Audio Sub A225-M offers the most accurate low-end performance in a studio subwoofer.
Technical Specifications
System: 1-way active
Potential peak power: 480 W
Continuous max SPL @ 1 m: 108 dB
Short term max SPL @ 1 m: 111 dB
Peak max SPL @ 1 m: 115 dB
Signal to noise ratio (S/N): 102 dBA
Bandwidth (-6 dB): 24 Hz – 100 Hz
SPL tolerances: ±2.0 dB
Phase tolerances: ±45° (300 Hz–500 Hz)
Woofer external diameter: 293 mm ×2
Woofer diaphragm diameter: 213 mm ×2
Dimensions (W × H × D): 320 × 700 × 500 mm
Net weight: 35.6 kg
Input connectors: 2 × XLR F, 2 × XLR M
Warranty: 5 (+1) years
