SMS-1

The Velodyne SMS-1 is a standalone subwoofer management system introduced in 2005, designed to optimize subwoofer performance by correcting room-induced bass anomalies. It uses digital signal processing and an 8-band parametric EQ to deliver precise, powerful low-frequency response for any subwoofer, making it a favorite among home theater and audiophile enthusiasts.

Short Product Info:

• Type: Digital subwoofer management system.
• Frequency Range: 15Hz–200Hz (for room response analysis).
• Connections: RCA and XLR inputs/outputs, 3 parallel subwoofer pre-outs, video out for on-screen display.
• Controls: 8-band parametric EQ, phase (0–180°), polarity (+/–), volume, crossover settings, subsonic filter.
• Accessories: Calibration microphone, remote control.
• Dimensions: 4.3 x 17 x 12.4 inches; ~5 kg.
• Price: ~$650–$749 (street price at launch).

Key Points:

• Room Correction: Real-time frequency response display (via TV) with auto and manual EQ adjustments to tame room modes, peaks, and dips.
• Ease of Use: Auto-EQ and self-EQ modes simplify setup; sweep tones and included mic ensure accurate calibration.
• Flexibility: Works with any subwoofer; supports multiple presets for movies, music, or gaming with customizable EQ, phase, and volume.
• Performance: “Jaw-dropping” improvement in bass clarity and accuracy, even with high-end subwoofers.
• Advanced Features: Adjustable crossover frequency/slope, subsonic filter to protect delicate subwoofers, and phase/polarity controls for system integration.
• Multi-Sub Support: Can manage multiple subwoofers (best with one SMS-1 per sub for optimal tuning); daisy-chaining possible.
• Build: Compact, professional-grade design, though some users note the need for manual tweaks over auto-EQ for best results.

Ideal for audiophiles and home theater enthusiasts seeking precise bass management, though manual tuning with tools like REW may yield better results for advanced users.