The QSC AD-P.SUB-BK 6.5-Inch Small-Format Passive Pendant Subwoofer (Black) is a compact pendant subwoofer designed to deliver enhanced low-frequency performance for background music and commercial audio installations. Its 6.5-inch woofer provides refined bass depth and clarity, even at lower listening levels.
Part of QSC's AcousticDesign Series, the AD-P.SUB-BK supports flexible SUB/SAT configurations across ceiling, surface-mount, and pendant loudspeakers. It features selectable 70V/100V transformer taps, a 4-ohm bypass, and four built-in high-pass-filtered outputs for connecting compatible satellite loudspeakers.
QSC AD-P.SUB-BK Features
- 6.5-inch passive pendant subwoofer designed for enhanced low-frequency performance.
- Selectable 70V/100V transformer taps with 4-ohm bypass for flexible system integration.
- Four built-in high-pass-filtered outputs for connecting compatible AcousticDesign satellite speakers.
- Suspension mounting, a snap-fit magnetic grille, and supplied quick-link cable assemblies for streamlined installation.

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HDTV Supply has QSC Level 1 certified expertise. Our team has completed QSC Level 1 Training, demonstrating foundational knowledge of the QSC platform, including system design, hardware and software, programming, and troubleshooting.
This training helps us provide knowledgeable product guidance when customers are selecting and deploying Q-SYS solutions. When you purchase Q-SYS products from HDTV Supply, you are working with a team that understands the Q-SYS platform and can help you make informed product and system decisions.
Why Buy the QSC AD-P.SUB-BK from HDTV Supply?
HDTV Supply offers QSC audio solutions for commercial and professional installations. Contact our team for assistance with product selection, system compatibility, and ordering.
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Have questions about the QSC AD-P.SUB-BK 6.5-Inch Passive Pendant Subwoofer? Our team can help with product information, compatibility, and installation considerations.
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QSC AD-P.SUB-BK Specifications
| Speaker | |
|---|---|
| Model | AD-P.SUB-BK |
| Active/Passive | Passive |
| Number of Included Speakers | 1 |
| Speaker Configuration | Subwoofer |
| Power Handling | 100 W |
| Recommended Amplifier Power | 100 W |
| Transformer Taps (70V) | 100 W / 50 W / 25 W / 12.5 W |
| Transformer Taps (100V) | 100 W / 50 W / 25 W or 4-ohm bypass |
| Impedance | 4 Ohms |
| Enclosure Type | Sealed |
| Drivers | |
| Low-Frequency Driver | 1 × 6.5-inch (165.1 mm) woofer |
| Performance | |
| Frequency Range | 50 Hz–150 Hz |
| Maximum SPL | 111 dB peak; 105 dB continuous |
| Sensitivity | 86 dB |
| Directivity Index | 1.2 dB |
| Directivity/Q Factor | 1.3 |
| Connectivity | |
| Inputs/Outputs | 3 × locking 4-pole block speaker input/output connections |
| Maximum Wire Gauge | 12 AWG |
| High-Pass-Filtered Outputs | 4 built-in outputs for compatible satellite loudspeakers |
| Physical and Environmental | |
| Certifications | CE, RoHS, UL |
| Environmental Resistance | IP34 dust/water resistance |
| Operating Temperature | -4°F to 122°F (-20°C to 50°C) |
| Color | Black |
| Mounting | Suspension |
| Construction Materials | ABS, steel |
| Dimensions | 14.1 × 13.6 inches (358.1 × 345.4 mm) |
| Weight | 17.5 lb (7.9 kg) |
QSC AD-P.SUB-BK Manuals and Documentation
Questions & Answers
QSC AD-P.SUB-BK Warranty
Please contact HDTV Supply or consult QSC's official warranty documentation to confirm the applicable warranty coverage for this product.
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