QSC Q-SYS PL-SUB15 15-Inch Passive Installation Subwoofer Black
- 15-Inch Low-Frequency Transducer
- 750W Continuous Power Handling
- Selectable Omni or Cardioid Radiation
- IP54 Weatherized Black Enclosure
The QSC Q-SYS PL-SUB15 is a high-performance 15-inch passive installation subwoofer designed to deliver powerful low-frequency reinforcement for professional AV environments. Its bass-reflex enclosure combines a 15-inch low-frequency transducer with a 4-inch voice coil for high-output performance in a compact installation-oriented design.
When deploying two or more PL-SUB15 subwoofers, Q-SYS allows selectable omnidirectional or cardioid radiation modes through Q-SYS processing. This provides greater flexibility for managing low-frequency coverage in entertainment venues, small sporting venues, corporate auditoriums, higher education facilities, and other professional installations.
The weatherized wooden enclosure provides IP54 protection for indoor and protected outdoor environments. The PL-SUB15 can be ground deployed or flown using its integrated M10 rigging points and is designed to integrate with Q-SYS CX-Q 8K4 network amplifiers for professional system processing and deployment.

QSC Certified Expertise
Knowledgeable Support for QSC Products
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 not buy this QSC Q-SYS PL-SUB15 15-Inch Passive Installation Subwoofer Black today?
Add powerful low-frequency performance, flexible radiation control, and professional Q-SYS integration to your audio installation.
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Have questions about the QSC Q-SYS PL-SUB15, amplifier compatibility, cardioid configuration, mounting, or installation? Our team is ready to help.
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Why not buy this QSC Q-SYS PL-SUB15 15-Inch Passive Installation Subwoofer Black today?
Contact HDTV Supply for knowledgeable assistance with your Q-SYS professional audio solution.
Specifications
| Model | PL-SUB15 |
| Product Type | Passive Installation Subwoofer |
| LF Transducer | 15-Inch (380 mm), 4-Inch (100 mm) Voice Coil |
| Enclosure Configuration | Passive Subwoofer with Bass Reflex Enclosure |
| Coverage | Omnidirectional or Cardioid Radiation Modes Selectable in Q-SYS |
| Cardioid Configuration | Requires Minimum Two PL-SUB15 Units |
| System Bandwidth (-3 dB) | 41 Hz - 93 Hz |
| System Bandwidth (-6 dB) | 38 Hz - 104 Hz |
| System Bandwidth (-10 dB with EQ) | 34 Hz - 114 Hz |
| Sub Crossover Options | 80 Hz, 100 Hz, or 125 Hz |
| System Sensitivity | 96 dB @ 1 W/1 m |
| Max SPL - Continuous | 124 dB |
| Max SPL - Peak | 136 dB |
| Max SPL - Calculated | 131 dB |
| Continuous Power | 750 W @ 8 Ω |
| Rated Power | 1500 W @ 8 Ω |
| Maximum Voltage | 77 Vrms |
| Nominal Impedance | 8 Ω |
| Minimum Impedance | 6.8 Ω |
| Enclosure Material | Exterior Plywood |
| Enclosure Color | Black (RAL 9011) |
| Grille | 16 Gauge, 1.5 mm; UV and Corrosion Treated |
| Weatherization | IP54 |
| Input Cup | IP65 Sealed with Gland |
| Connectors | 2 x speakON NL4; 1 x Locking 4-Pole Euroblock |
| Rigging | Integrated M10 Rigging Points |
| Deployment | Ground or Flown Deployment |
| Dimensions - Net | 15 x 23.5 x 27.1 Inches (H x W x D) |
| Dimensions - Shipping | 16.2 x 26.5 x 30.3 Inches |
| Product Weight | 80 lbs |
| Shipping Weight | 96.0 lbs |
| Recommended Amplifier | Q-SYS CX-Q 8K4 |
| CX-Q 8K4 Capacity | Up to 1 PL-SUB15 per Channel |
| Optional Accessory | PL-SUB15-AF Suspension Frame; M10 KIT-S |
Why not buy this QSC Q-SYS PL-SUB15 15-Inch Passive Installation Subwoofer Black today?
Get powerful low-frequency output, flexible cardioid or omnidirectional deployment, and professional Q-SYS integration for demanding audio installations.
Manuals
Q-SYS PL-SUB Series User Manual
This official manual covers the PL-SUB10, PL-SUB12, PL-SUB15, and PL-SUB18 passive installation subwoofers.
Download the Q-SYS PL-SUB Series User Manual
Q-SYS PL-SUB15 Specification Sheet
Download the PL-SUB15 Specification Sheet
Why not buy this QSC Q-SYS PL-SUB15 15-Inch Passive Installation Subwoofer Black today?
Review the official documentation and contact HDTV Supply if you need assistance with amplifier selection, cardioid configuration, or installation.
What is the QSC Q-SYS PL-SUB15?
A: The PL-SUB15 is a 15-inch passive installation subwoofer with a bass-reflex enclosure designed to provide powerful low-frequency reinforcement in professional AV systems.
What size woofer does the PL-SUB15 use?
A: The PL-SUB15 uses a 15-inch low-frequency transducer with a 4-inch voice coil.
What is the frequency response of the PL-SUB15?
A: The latest specification sheet lists 41 Hz–93 Hz at -3 dB, 38 Hz–104 Hz at -6 dB, and 34 Hz–114 Hz at -10 dB with EQ.
How much power can the PL-SUB15 handle?
A: The PL-SUB15 handles 750W of continuous power and 1500W rated power at 8 ohms.
What is the impedance of the PL-SUB15?
A: The PL-SUB15 has a nominal impedance of 8 ohms and a minimum impedance of 6.8 ohms.
What is the maximum SPL of the PL-SUB15?
A: The latest PL-SUB15 specification sheet lists 124 dB maximum continuous SPL and 136 dB maximum peak SPL.
Can the PL-SUB15 operate in cardioid mode?
A: Yes. When deploying at least two PL-SUB15 units, Q-SYS can configure omnidirectional or cardioid radiation modes through Q-SYS processing.
Which Q-SYS amplifier is recommended for the PL-SUB15?
A: Q-SYS recommends the CX-Q 8K4 network amplifier, supporting up to one PL-SUB15 per channel.
Is the Q-SYS PL-SUB15 weather resistant?
A: Yes. The PL-SUB15 features an IP54 weatherized exterior plywood enclosure with stainless hardware, treated grille, hydrophobic stainless-steel mesh, polyurea paint, and an IP65-sealed input cup.
What color is the PL-SUB15?
A: This version is Black, RAL 9011.
What makes the Q-SYS PL-SUB15 different from a standard subwoofer?
A: The PL-SUB15 combines a 15-inch professional LF transducer, IP54 weatherization, integrated M10 rigging, and Q-SYS-configurable omnidirectional or cardioid radiation modes.
Can two PL-SUB15 subwoofers create a cardioid setup?
A: Yes. Q-SYS specifies that cardioid operation requires a minimum of two PL-SUB15 units, with the radiation pattern configured through Q-SYS processing.
Can the PL-SUB15 be flown?
A: Yes. The PL-SUB15 supports ground or flown deployment using integrated M10 rigging points and the optional PL-SUB15-AF suspension frame.
What applications are best suited for the PL-SUB15?
A: The PL-SUB15 is suited for entertainment venues, small sporting venues, corporate auditoriums, higher education lecture halls, and other professional AV installations requiring high-performance low-frequency reinforcement.
Why choose the Q-SYS PL-SUB15 for a professional audio system?
A: The PL-SUB15 provides powerful 15-inch low-frequency performance, 750W continuous power handling, flexible cardioid or omnidirectional deployment, IP54 weatherization, and Q-SYS network amplifier integration.
Why not buy this QSC Q-SYS PL-SUB15 15-Inch Passive Installation Subwoofer Black today?
Choose the PL-SUB15 when your professional AV system requires high-output low-frequency reinforcement with flexible radiation control.
Warranty
The QSC Q-SYS PL-SUB15 is covered by a 3-Year Limited Warranty, subject to the applicable Q-SYS/QSC warranty terms and conditions.
Why not buy this QSC Q-SYS PL-SUB15 15-Inch Passive Installation Subwoofer Black today?
Purchase with confidence from HDTV Supply and receive knowledgeable support for your Q-SYS professional audio solution.