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Meyer Sound 900-LFC Compact Low-Frequency Control Element


Meyer Sound 900-LFC Compact Low-Frequency Control Element
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About: Meyer Sound 900-LFC Compact Low-Frequency Control Element

Meyer Sound’s 900-LFC compact low-frequency control element reproduces low frequencies at high continuous output levels with extremely low distortion. The 900-LFC offers the same sonic linearity as Meyer Sound’s 1100-LFC low-frequency control element in a smaller, lighter cabinet, making it ideal for building scalable systems to suit touring applications or fixed installations of any size.


  • Compact cabinet with small footprint and extraordinary power-to-size ratio
  • High peak power output with extremely low distortion
  • Exceptional linearity, transient reproduction, and low-frequency clarity
  • Self-powered for simplified setup and increased reliability
  • Stackable and flyable in regular and cardioid arrays, with tilt and splay options
  • Integral pole-mount receptacle easily pairs the subwoofer with ULTRA Series loudspeakers

A newly designed class D amplifier affords unprecedented efficiency to the 900-LFC, significantly lowering distortion while reducing power consumption and operating temperature. A single, field-replaceable module contains the on-board amplifier and control circuitry.

In addition to pairing with LEOPARD systems, the 900-LFC integrates easily with other Meyer Sound loudspeaker systems, including LEO-M, LYON, and ULTRA Series loudspeakers.

Meyer Sound’s Galileo GALAXY Network Platforms, which provide matrix routing, alignment, and processing for array components, can drive LEOPARD and 900-LFC loudspeakers. To guarantee optimum performance, use Meyer Sound’s MAPP system design tool to design systems with the 900-LFC.

LEOPARD and 900-LFC loudspeakers work with Meyer Sound’s RMS remote monitoring system, which provides comprehensive monitoring of system parameters from a Mac or Windows-based computer.

The 900-LFC is available with or without Meyer Sound’s QuickFly rigging. When equipped with the optional MRK-900 rigging kit, the captive GuideALinks enable flying of the 900-LFC from the MG-LEOPARD/900 multipurpose grid in LEOPARD arrays without a transition frame. Also use the MG-LEOPARD/900 grid for groundstacks with uptilt or downtilt. Or fly 900-LFCs separately as a subwoofer array with variable splay angles of 0°, 1.25°, 2.5°, 3.75°, or 5°.

Transport both versions of the 900-LFC in stacks with the optional MCF-900 caster frame.

Supercharged Bass for Mid-Size Venues

  • BRING LOW END TO LIFE - The 900-LFC Low-Frequency Control Element extends the response of mid-sized P.A. systems to 35 Hz, revealing the nuances of your mix, down to the deepest bass with total accuracy.
  • SCALABLE AND VERSATILE - Take advantage of the linearity and fidelity of the flagship 1100‑LFC, in a smaller, lighter package that’s ideal for scalable systems. Whether you’re in a club, theatre, theme park, or on tour, the 900-LFC delivers breathtaking bass, from the front row to the back of the house.
  • POWER AND PUNCH - Crank it up with confidence: The 900-LFC’s ultra-efficient Class-D amplifier delivers high peak power with minimal distortion, for the utmost clarity and crisp transients at any volume level.
  • TOTAL RIGGING FLEXIBILITY - Hassle-free hardware options, including QuickFly rigging, give you complete coverage control. Use multipurpose grid kits to fly or ground-stack boxes, in standard or cardioid orientation, and in curvilinear or line arrays. Fly the 900-LFC alone or with LEOPARD, or integrate with ULTRA Series loudspeakers using its built-in pole-mount receptacle.

Big System Sound, Smart System Management

  • A PARTNER FOR ANY P.A. - With a 31 to 125Hz range, the 900-LFC is ideally matched to LEOPARD arrays, and integrates easily with LEO, LYON, and ULTRA Series, as well as the 1100‑LFC.
  • SELF-POWERED SIMPLICITY - The 900-LFC’s active design means no struggling with amp racks, long cable runs, or gain and crossover calibration—saving you time and money with every load-in and teardown.
  • RUGGED AND ROADWORTHY - The 900-LFC is built tour-tough with a durable multi-ply hardwood cabinet, hex-stamped steel grille, protective plastic skids, and weather-protection options. An optional caster frame lets you securely transport stacks of three.
  • A SYSTEM AT YOUR FINGERTIPS - Fine-tune the 900-LFC’s performance with pinpoint accuracy, using Meyer Sound’s powerful software options: Optimize system design with MAPP 3D system design and prediction tool, Galileo GALAXY loudspeaker management, and monitor in real time with RMS remote monitoring.

Why Self-Powered?

Self-powered loudspeakers offer several advantages over their passive counterparts when it comes to fidelity, reliability, and simplicity. The great part is, you’ll start to reap the benefits of a self-powered system before you even power up.

Ease of Deployment

System set-up is so much easier when you have fewer components and fewer cables to worry about being miswired. Since self-powered loudspeakers incorporate amplification, you’ll never have to deal with matching speakers to amplifiers or connecting components. You don’t have to worry about calibration of gain and crossover setting which means more time focusing on the show. Eliminating amp racks doesn’t just streamline system deployment, it streamlines your inventory whether you’re a rental house or a road warrior. And when you consider that the average amp rack weighs nearly 300 pounds and takes up four feet of truck space, the efficiencies get even clearer. Let alone when you want to fly the amplifier racks to get closer to the speakers, often requiring more rigging points and more motors.

Predictable, Reliable Operation

Internal amplification is closely matched to drivers. Because individual components have been optimized during manufacturing, you can expect consistent sound from show to show. Built-in, factory-optimized protection circuitry provides extra assurance without degrading signal quality. And, when you have less equipment, you have less risk of failure.

Better Frequency and Phase Response

Because self-powered loudspeakers incorporate sophisticated processing, they are calibrated to exhibit optimal response curves in key performance parameters. Active crossovers are more precise, sophisticated designs, and bi-amped systems are time aligned, eliminating phase issues. The result? Accurate sound throughout the speaker’s range, at any volume level.

Unparalleled Clarity

In powered monitors, internal amplifiers are precision-matched to drivers, delivering optimal power at all times for cleaner sound. And because amps are built into loudspeaker cabinets, there’s no need for long lengths of connecting cable, which can become prone to distortion and signal loss.

Tighter Transients

Since self-powered loudspeakers have very short internal cables, amps inside can more effectively dampen driver mechanical motion, which leads to better sonic accuracy and tighter, crisper transients. (And, there’s none of the loss in levels and signal quality inherent over long cable distances.)


    • 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)
      • 133 dB (Pink noise), 134.5 dB (B-noise)
    • 360° (single unit); varies with number of units and configurations
    • Low Frequency -  One 18-inch, dual-coil, long-excursion cone driver; 2Ω nominal impedance
    • Type -  Differential, electronically balanced
    • Maximum Common Mode Range -  ±15 V DC, clamped to earth for voltage transient protection
    • Connectors -  XLR 5-pin female input with male loop output; XLR 3-pin female connectors available to accommodate only balanced audio (no RMS signals)
    • Input Impedance -  10 kΩ differential between pins 2 and 3
    • Wiring
      • Pin 1: Chassis/earth through 1 kΩ, 1000 pF, 15 V clamped network to provide virtual ground lift at audio frequencies
      • Pin 2: Signal (+)
      • Pin 3: Signal (–)
      • Pin 4: RMS
      • Pin 5: RMS
      • Case: Earth ground and chassis
    • Nominal Input Sensitivity -  6.0 dBV (2.0 V rms) continuous is typically the onset of limiting for noise and music
    • Input Level -  Audio source must be capable of producing +20 dBV (10 V rms) into 600 Ω to produce the maximum peak SPL over the operating bandwidth of the loudspeaker
    • Type -  2-channel, open-loop, class D
    • Total Output Power -  3100 W peak
    • THD, IM, TIM -  < 0.02%
    • Cooling -  Convection
    • Connectors -  powerCON 20 input with loop output
    • Automatic Voltage Selection -  90–265 V AC; 50–60 Hz
    • Safety Agency Rated Voltage Range -  100–240 V AC, 50–60 Hz
    • Turn-on and Turn-off points -  90 V AC turn-on, no turn-off; internal fuse-protection above 265 V AC
    • Idle Current -  0.60 A rms (115 V AC), 0.49 A rms (230 V AC), 0.63 A rms (100 V AC)
    • Maximum Long-Term Continuous Current (>10 sec) -  4.9 A rms (115 V AC); 2.5 A rms (230 V AC); 5.2 A rms (100 V AC)
    • Burst Current (<1 sec) -  8.8 A rms (115 V AC), 4.7 A rms (230 V AC), 11.0 A rms (100 V AC)
    • Maximum Instantaneous Peak Current -  18.2 A peak (115 V AC), 9.2 A peak (230 V AC), 20.6 A peak (100 V AC)
    • Inrush Current -  < 20 A peak
    • Equipped with two-conductor twisted-pair network, reporting all operating parameters of amplifiers to system operator’s host computer.
    • Dimensions without Rigging (WxHxD) -  27.43 x 24.43 x 24.89 inch (697 x 621 x 632mm)
    • Dimensions with Rigging (WxHxD) -  27.47 x 24.43 x 24.89 inch (698 x 621 x 632mm)
    • Weight without Rigging -  136 lb (61.7 kg)
    • Weight with Rigging -  159 lb (72.1 kg)
    • Enclosure -  Premium multi-ply birch with slightly textured black finish
    • Protective Grille -  Powder-coated, hex-stamped steel with acoustical black mesh
    • Rigging -  Optional end frames with captive GuideALinks secured with 0.3125 in x 0.63 in quick release pins that allow 0°, 1.25°, 2.5°, 3.75°, or 5° splay angles; detachable side handles. Rigging supports ground-stacked, flown, and cardioid configurations.
    • Pole Mount -  U.S. version: 1.5 in (38 mm)

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