QSC LF-4215-F – Cinema LF Component (Flyable, Single 15-Inch) is backordered and will ship as soon as it is back in stock.
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Product Overview
The QSC LF-4215-F is a flyable, screen-based high-power low-frequency cabinet for professional cinema systems. Housing a 2x15-inch low-frequency complement, it serves as the LF section of QSC's flyable DCS screen channels and large-format behind-screen systems.
Suspension-capable and protected against DC, low-frequency, and overload conditions, the LF-4215-F delivers high-output, reliable bass for large auditoriums.
Product Description

The LF-4215-F is a passive 2x15-inch low-frequency cabinet rated at 1000 W with 99.5 dB sensitivity and a 4-ohm impedance. Built-in protection guards against direct current, low-frequency signals, and overload to safeguard the drivers in demanding cinema playback.
The cabinet measures 800 x 1016 x 482 mm and is finished in black for behind-screen use, and its flyable design supports suspended deployment in large-format auditoriums. It pairs with QSC mid-high components to form complete flyable screen channels such as the SC-423C-F.
As part of the QSC DCS ecosystem, the LF-4215-F integrates with QSC cinema amplifiers and processors. For a complete flyable screen channel, see the QSC SC-423C-F.
Key Features
- 2x15-inch low-frequency cabinet — A dual-15-inch passive LF section delivers high-output cinema bass.
- Flyable, screen-based design — Supports suspended behind-screen deployment in large-format auditoriums.
- Comprehensive protection — Guards against direct current, low-frequency signals, and overload.
- High sensitivity — 99.5 dB sensitivity with a 1000 W power rating for high output.
- 4-ohm impedance — Draws power efficiently from cinema amplifier channels.
Typical Applications
- Auditorium
- Broadcast studio
- Multi-purpose room
Technical Specifications
| System type | Passive, flyable 2x15 in low-frequency cabinet |
| Drivers | 2 x 15 in low-frequency |
| Power | 1000 W |
| Sensitivity | 99.5 dB |
| Impedance | 4 ohms |
| Protection | DC, low-frequency, and overload protection |
| Dimensions (H x W x D) | 1016 x 800 x 482 mm |
| Finish | Black |
Frequently Asked Questions
What is the LF-4215-F used with?
It is the flyable 2x15-inch low-frequency section used with QSC mid-high components to build complete flyable cinema screen channels such as the SC-423C-F.
Is it powered?
No. The LF-4215-F is a passive 4-ohm cabinet driven by a separate cinema amplifier channel.
Can it be suspended?
Yes. Its flyable, screen-based design supports suspended behind-screen deployment with installer-provided rigging.
What warranty and support come with this cabinet?
QSC installed loudspeakers are covered under QSC's standard limited warranty; refer to QSC's published warranty terms for the current coverage period applicable to this model. Creation Networks provides pre- and post-sale support for system design and integration questions.
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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