D&B audiotechnik Q‑SUB

D&B audiotechnik Q‑SUB – Bass‑Reflex Subwoofer Module (Q‑Series)

The Q‑SUB is a powerful, bass-reflex subwoofer featuring a high-excursion 18″ driver. It is engineered for use with Q-Series loudspeakers such as the Q1 and Q7, supporting both flown and ground-stacked configurations with professional rigging compatibility.

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Key Specifications

• Driver: Single 18″ high-excursion LF driver
• Frequency Response (–5 dB): 40 Hz – 130 Hz in standard mode; selectable lower bandwidth (40 Hz – 100 Hz) in 100 Hz mode (infra operation)
• Power Handling: 400 W RMS / 1,600 W peak (10 ms crest)
• Max SPL (1 m, free-field, crest-factor 4): Up to 133 dB using D12/D20/D80/D30 amplifiers; 129 dB when used with D6/E‑PAC or similar
• Nominal Impedance: 8 Ω
• Compatibility: Mechanically and acoustically matched with Q1 and Q7 cabinets
• Rigging: Built-in array pins for Q-Series system alignment and optional pole mounting with M20 flange

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Physical & Mechanical Details

• Construction: Marine plywood cabinet with impact-resistant, black finish
• Grille: Rigid metal grille with acoustically transparent foam backing (replaceable)
• Handles & Mobility: Two recessed handles; four heavy-duty wheels on rear
• Connectors: Dual EP5 or optional NL4 outputs (wired in parallel); EP5 supports SenseDrive when used with D12 amplifier
• Dimensions (H × W × D): Approximately 493 mm × 580 mm × 668 mm (without wheels)
• Weight: Approximately 42 kg (~93 lb)

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Key Features & Configuration

• Infra Mode (100 Hz): Softens upper-frequency response for smoother integration with top cabinets at shallow slopes
• SenseDrive Functionality: With EP5 connectors and D12 amplifiers, SenseDrive monitors LF driver excursion and limits to prevent overload
• CSA Compatibility (Cardioid Subwoofer Array): When deployed with matching amplifiers and settings, Q‑SUB can act as the rear element in three‑cabinet cardioid arrays
• Array Integration: Placed above Q1 modules in flown arrays or ground-stacked below for full-range coverage

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System Integration

• Recommended as two Q‑SUB cabinets per amplifier channel for optimum output and headroom
• Infra mode useful when full range cabinets cannot extend below 100 Hz or in environments requiring precise low-frequency control
• Compatible with amplifiers: D6, D12 (SenseDrive available), D20, D80, D30, or E‑PAC (without CSA support)

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Ideal Applications

• High-output touring and installation systems using Q-Series arrays
• Systems requiring tight, articulate bass with options for cardioid or infra configurations
• Clubs, festivals, or fixed installs where space-efficient deep bass delivery is needed
• Scenarios with noise limits or acoustic constraints, where forward directivity matters

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Summary

The d&b Q‑SUB is a rugged and efficient single‑driver subwoofer module delivering up to 133 dB SPL with controlled low-frequency performance. Its dual‑mode frequency response, optional SenseDrive, and CSA compatibility make it a flexible, high-output solution for powering both flown and ground-stacked Q-Series line arrays with precision and reliability.

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If you’d like this formatted for a spec sheet, compared with the QiCSA-SUB or B2-SUB, or integrated into complete system diagrams, just let me know.