QSC RSB212 – Dual 12-Inch Reference Monitor Subwoofer is backordered and will ship as soon as it is back in stock.
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Product Overview
The QSC RSB-212 is the subwoofer component of the QSC Reference Monitor System — a high-performance, studio-quality loudspeaker system designed for critical mixing, monitoring, and presentation. It is a dual 12-inch low-frequency enclosure with 500 W transducers and 96 dB sensitivity, paired with a matching RSC-112 screen-channel loudspeaker plus factory-specified signal processing and power amplification. The RSB-212 is priced individually and requires NL8 connectors (not supplied by QSC).
Product Description

The RSB-212 features two specially-designed long-throw 12” (305 mm) woofers with 3” (76 mm) voice coils for exceptional extended low-frequency bandwidth, each loaded in its own tuned chamber. Each RSB-212 receives customized signal processing from a matched QSC Q-SYS™ processor core, which provides Intrinsic Correction™ — a set of proprietary DSP tunings implemented as FIR filters for the most accurate acoustical magnitude, frequency, and phase performance possible. The enclosure uses rugged 15-ply Baltic birch plywood construction, with M10 threaded inserts for flexible, safe deployment. The RSB-212 is designed to pair with the matched RSC-112 screen channel, and an optional RBK-12 baffle wing kit is available.
Key Features
- Dual 12” (305 mm) long-throw woofers — Two 500 W transducers with 3” (76 mm) voice coils for extended low-frequency bandwidth.
- Independent tuned chambers — Each woofer is loaded in its own tuned chamber for controlled output.
- 96 dB sensitivity — Efficient output for reference-quality low-frequency reproduction.
- Intrinsic Correction™ DSP — FIR-based tunings from a matched Q-SYS core deliver accurate magnitude, frequency, and phase response.
- 15-ply Baltic birch construction — Rugged, acoustically rigid enclosure.
- Part of the QSC Reference Monitor System — Pairs with the matched RSC-112 screen channel, signal processing, and amplification.
- M10 threaded inserts — Flexible, safe deployment for a variety of installations.
- NL8 Speakon™ connector — Requires NL8 connectors (not supplied by QSC); optional RBK-12 baffle wing kit.
Typical Applications
- Broadcast studio (critical mixing and monitoring)
- Auditorium (screening / presentation)
Technical Specifications
| Specification | Value |
|---|---|
| Type | Reference monitor subwoofer (LFE) |
| Transducers | Dual 12” (305 mm), 500 W, long-throw |
| Voice Coil | 3” (76 mm) |
| Sensitivity | 96 dB |
| Enclosure | Independent tuned chambers; 15-ply Baltic birch plywood |
| Signal Processing | Intrinsic Correction™ via matched Q-SYS core |
| Connectors | NL8 Speakon™ (not supplied) |
| Rigging | M10 threaded inserts |
| Matched Screen Channel | RSC-112 |
| SKU | RSB212 |
Frequently Asked Questions
Is the RSB-212 sold as a complete system?
The RSB-212 is priced individually and is designed to operate as part of the QSC Reference Monitor System with the matched RSC-112 screen channel, signal processing, and amplification.
Are connectors included?
No. The RSB-212 requires NL8 Speakon™ connectors, which are not supplied by QSC.
What signal processing does it require?
Each RSB-212 receives customized processing from a matched QSC Q-SYS core providing Intrinsic Correction™ FIR-based tunings.
What warranty applies?
The RSB-212 is covered under QSC’s standard limited warranty terms. For configuration and warranty details, contact Creation Networks.
At Creartion Networks, we do everything we can to create an excellent customer experience. This includes fast shipping and easy returns.
- Most in-stock orders placed Monday-Friday ship within 24-48 hours. General restrictions apply; please see our full shipping policy here.
- We offer a 30-day return policy from the delivery date on many products. Product restrictions apply. Restocking fees for the return of open-box items. Please see our full return policy here for more information.
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