Meyer Sound 900-LFC 3100W Powered Subwoofer with QCLP (No Rig, with Weather Protection) - 09.246.201.12
Meyer Sound 900-LFC 3100W Powered Subwoofer with QCLP (No Rig, with Weather Protection) - 09.246.201.12 is backordered and will ship as soon as it is back in stock.
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Product Overview
The Meyer Sound 900-LFC is a compact self-powered low-frequency control element for scalable low-frequency reinforcement across touring and fixed installations. This configuration combines QCLP weather protection with a no-rig cabinet, suiting ground-stacked or pole-mounted outdoor and semi-exposed deployments. A single 18-inch long-excursion driver and an onboard class D amplifier deliver high continuous output with extremely low distortion. It is a natural low-frequency complement for Meyer Sound LEOPARD line array systems.
Product Description

This QCLP no-rig variant adds factory weather protection to the standard 900-LFC while omitting the rigging frame, keeping cabinet weight at 136 lb for ground-stacked and pole-mounted use. The cabinet houses a two-channel open-loop class D amplifier rated at 3100 W peak in a single field-replaceable module. The integral pole-mount receptacle pairs the unit with ULTRA Series loudspeakers, and RMS remote monitoring reports operating parameters to a host computer. Units transport in stacks using the optional MCF-900 caster frame. For flown weather-protected applications the rigging-equipped QCLP variant or the larger Meyer Sound VLFC arrayable subwoofer may suit better, and the matching array system is the Meyer Sound LEOPARD line array loudspeaker. Browse the full Meyer Sound collection for processing and accessories.
Key Features
- QCLP Weather Protection — Factory environmental protection allows deployment in outdoor and semi-exposed applications.
- 18-inch LF Driver — A single dual-coil, long-excursion 18-inch cone driver with 2 ohm nominal impedance produces high-output, low-distortion low frequencies.
- Self-Powered Class D Amplifier — A two-channel, open-loop class D amplifier rated at 3100 W peak is housed in a field-replaceable module.
- No-Rig Configuration — Without the rigging frame the cabinet weighs 136 lb and suits ground-stacked and pole-mounted deployments.
- RMS Remote Monitoring — A two-conductor twisted-pair network reports all amplifier operating parameters to a host computer.
- Integral Pole Mount — A built-in pole-mount receptacle pairs the subwoofer with ULTRA Series loudspeakers.
- Caster Frame Ready — Compatible with the optional MCF-900 caster frame for transport in stacks.
Typical Applications
- House of Worship — Provides weather-resistant ground-stacked low-frequency reinforcement for outdoor worship events.
- Auditorium — Extends low-frequency response for theatrical and presentation sound systems.
- Multi-Purpose Room — Supports flexible ground-stacked low end across varied events.
- Broadcast Studio — Delivers linear, low-distortion low frequencies for production audio.
Technical Specifications
| Operating Frequency Range | 30 Hz – 125 Hz |
| Frequency Response | 32 Hz – 115 Hz ±4 dB |
| Phase Response | 40 Hz – 110 Hz ±30° |
| Linear Peak SPL | 133 dB with crest factor >10 dB (M-noise) |
| Low Frequency Driver | One 18-inch dual-coil, long-excursion cone driver; 2 Ω nominal |
| Amplifier | Two-channel, open-loop, class D; 3100 W peak |
| THD, IM, TIM | < 0.02% |
| AC Power | powerCON 20 input with loop; 90–265 V AC, 50–60 Hz |
| Dimensions without Rigging | W 27.43 in x H 24.43 in x D 24.89 in (697 x 621 x 632 mm) |
| Weight without Rigging | 136 lb (61.7 kg) |
| Enclosure | Premium multi-ply birch with textured black finish |
Specifications sourced from Meyer Sound. Subject to change without notice.
Competitor Comparison
| Criteria | Meyer Sound 900-LFC | L-Acoustics KS21 | d&b SL-SUB |
| Amplification | The 900-LFC is self-powered with an integrated class D amplifier in the cabinet. | The KS21 is externally amplified and requires an LA-series amplified controller. | The SL-SUB is externally amplified and requires a d&b amplifier. |
| Driver Configuration | It uses a single 18-inch long-excursion driver. | It uses a single 21-inch driver. | It uses dual 21-inch drivers in a larger cabinet. |
| Monitoring | It includes Meyer Sound RMS remote monitoring of all amplifier parameters. | Monitoring is handled through the external amplifier and LA Network Manager. | Monitoring is handled through the external amplifier and R1 software. |
| Weather Protection | This QCLP variant is supplied with factory weather protection for exposed use. | Weather protection is offered as a separate WR variant. | Weather protection requires d&b NL or outdoor-rated variants. |
Frequently Asked Questions
Can this subwoofer be used outdoors? Yes. This QCLP configuration includes factory weather protection for outdoor and semi-exposed installations.
Does it include rigging? No. This is a no-rig configuration suited to ground-stacked and pole-mounted use; rigging can be added with the optional MRK-900 kit.
Does it require an external amplifier? No. The 900-LFC is self-powered and can be driven and aligned using a Meyer Sound Galileo GALAXY Network Platform.
How is it monitored? The unit includes Meyer Sound RMS, reporting all amplifier operating parameters to a Mac or Windows host computer.
What warranty applies? This product is covered under Meyer Sound's standard product warranty. For details please contact us.
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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