M3D : Line Array Loudspeaker
The Meyer Sound M3D loudspeaker is an advanced line array system for mediumto long-throw applications. The product of more than two years of intensive research and development, the M3D features Broadband Q technology — a unique, integrated set of engineered advancements that optimize line array performance.
The M3D high-frequency section comprises two Meyer Sound 4-inch diaphragm compression drivers coupled to a constantdirectivity horn through a patented REM ribbon emulaton manifold. The manifold closely approximates the radiation characteristic of a ribbon driver, affording very tight vertical and wide 90-degree horizontal coverage, while providing the power capability of compression drivers.
Four 15-inch cone drivers in a vented enclosure comprise the M3D's lowfrequency section. Two high-power 15-inch drivers (4-inch voice coil) with neodymium magnets face forward. These drivers are capable of a full half-inch of linear excursion. In the rear of the cabinet, two 15-inch cone drivers driven by a sophisticated phase manipulation circuit provide broadband directional control and reinforce the output of the front-facing drivers. This novel technology affords controlled cardioid coverage to 35 Hz.
A complex mid-range phase and magnitude alignment between the two front-facing 15-inch cone drivers prevents destructive combing across the M3D's horizontal coverage. TruPower limiting technology ensures maximum driver protection, minimizes power compression and permits high constant output under high continuous and peak power conditions.
The self-powered M3D produces a maximum output of 145 dB peak SPL at 1 meter within its operating frequency range of 35 Hz to 18 kHz. The amplifier, control electronics and power supply are integrated into a single, field-replaceable module mounted at the rear of the cabinet.
The four-channel class AB/H power amplifier with complementary MOSFET output stages produces 4500 watts maximum. The M3D’s Intelligent AC power supply affords automatic voltage selection, EMI filtering, soft current turn-on and surge suppression. Phase-corrected active processing circuits help maintain excellent performance and reliability, and the high common-mode rejection of the lasertrimmed differential input permits long signal runs through a simple shielded twisted pair cable.
The M3D cabinet is coated with a textured black finish. Integral metal grilles protect the cone drivers, and a rain hood is fitted to protect the electronics from moisture intrusion. The optional QuickFly MG-3D/M multipurpose grid allows either flying or ground stacking various combinations of M3D and M3D-Sub. Up to 16 M3Ds (or the equivalent weight of M3D and M3D-Sub) may be flown with a 7:1 safety factor. Up to four M3Ds, four M3D-Subs or three M3Ds and one M3D-Sub may be safely ground stacked. Specially-designed caster rails facilitate moving stacks of up to four cabinets, and optional fabric covers protect the cabinets in transit.
Meyer Sound's RMS remote monitoring system is fitted as standard, providing comprehensive monitoring of system performance parameters over a Microsoft Windows network.
Features & Benefits
- Controlled broadband directivity minimizes reverberation for greatest clarity
- Cardioid low-frequency pattern maximizes gain before feedback
- Optimized line array behavior provides consistent response over long throws
- Multiple vertical line arrays may be splayed horizontally to broaden coverage
- Prodigious low-frequency capability can eliminate need for subwoofers in some applications
- Self-powered for simplified setup and increased reliability
- Seamless integration with other M Series models
Applications
- Stadiums, arenas and concert halls
- Touring sound reinforcement
- Large-scale events
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Used Meyer Sound Laboratories
Meyer Sound Laboratories is an American company based in Berkeley, California that manufactures self-powered loudspeakers, multichannel audio show control systems, electroacoustic architecture, and audio analysis tools for the professional sound reinforcement, fixed installation, and sound recording industries.
The company’s emphasis on research and measurement has resulted in the issuance of dozens of patents, including for the now-standard trapezoidal loudspeaker cabinet shape. Meyer Sound has pioneered other technologies that have become standard in the audio industry, including: processor-controlled loudspeaker systems, self-powered loudspeakers,curvilinear arraying, cardioid subwoofers, and source independent measurement.
Meyer Sound has consistently involved itself with advanced research beyond that connected to immediate product development, sometimes in conjunction with arms of the University of California, Berkeley. Some of this research has resulted in unusual products such as their parabolic sound beam and sound field synthesis loudspeakers. Other projects, such as the spherical loudspeaker research underway by Meyer Sound and CNMAT (Center for New Music and Audio Technologies) at UC Berkeley are still in the stage of pure research.
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Efficiency Rating: Level of sound output measured at a prescribed distance with a standard input power. Efficiency rating standard is 1 watt (2.83V at 8 ohms) at 1 meter over a specified frequency range and is measured in decibels.
Equalization: Loosely, any type of relative frequency adjustment. Specifically, the process of changing the frequency balance of an electrical signal to alter the acoustical output.
Equalizer: A component designed to alter the frequency balance of an audio signal. Equalizers may be graphic, parametric, or a combination of both.
Fade: A gradual increase in audio, i.e. a fade-up, or a gradual decrease in audio, i.e. a fade-down.
Feedback: The transmission of current or voltage from the output of a device back to the input, where it interacts with the input signal to modify operation of the device. Feedback is positive when it’s in phase with the input and negative when it’s out of phase.
FM: Frequency Modulated.
Frequency: The number of cycles (vibrations) per second. In audio, audible frequencies commonly range from 20 to 20,000 cycles per second (Hz). In video, frequency is used to define the image resolution. Low-frequency video images depict large objects or images. Higher frequencies depict smaller objects (finer details.
Frequency Response: A measure of what frequencies can be reproduced and how accurately they are reproduced. A measurement of 20 to 20,000 Hz, 3dB means those frequencies between 20 and 20,000 Hz can be reproduced no more than 3 dB above or below a reference frequency level.
Full-Range: A speaker designed to reproduce the full range (20 Hz to 20 kHz) of audio frequencies.
Gain: Increase in level or amplitude.
Gooseneck: This refers to a microphone with a flexible neck that is most frequently attached to a podium or lectern. It is designed to allow the speaker to raise or lower the microphone to a suitable height.
Graphic Equalizer: A type of equalizer with sliding controls that creates a pattern representing a graph of the frequency-response changes. Raising sliders boosts the affected frequencies lowering sliders cuts (attenuates) the affected frequencies.
HDCP: High-Bandwidth Digital Content Protection. Created by Intel, HDCP is used with HDTV signals over DVI and HDMI connections and on D-Theater D-VHS recordings to prevent unauthorized duplication of copyright material.
HDR: Hard-Drive Recorder. Device that uses a computer hard drive to store compressed digital audio and video signals.
High Pass: A filter that passes high frequencies, and attenuates low frequencies. Same as low cut.
Hz: Hertz or cycles per second. Something that repeats a cycle once each second moves at a rate of 1 Hz.
Incue/Inq/In-Point: These words all refer to the initial few seconds of audio signifying the beginning of the production.
Integrated Amplifier: A combination preamp and amplifier.
Impedance: A measure of the impediment to the flow of alternating current, measured in ohms at a given frequency. Larger numbers mean higher resistance to current flow.
KHz: Kilohertz or one thousand Hz.
Lavaliere: A small microphone that attaches to clothing, allowing the speaker to have a hands-free presentation.
Line Array: A group of speakers that have been arrayed or "built up" in the vertical or horizontal plane, which allow for a highly consistent sound field. A Line Array is perfect for medium to large audiences.
Line-Level (Low-Level): A level of electrical signals too low to make the average speaker move sufficiently. Amplifiers receive line-level signals and amplify them to speaker level.
lockout: The final words of a segment used to signify the production’s conclusion.
Low Pass: A filter that lets low frequencies go through but doesn’t let high frequencies go through. Same as high cut.
MHz: Megahertz, or 1 million Hz.
Midbass: The middle of the bass part of the frequency range, from approximately 50 to 100 Hz (upper bass would be from 100 to 200 Hz). Also used as a term for loudspeaker drivers designed to reproduce both bass and midrange frequencies.
Midrange: The middle of the audio frequency range. Also used as a term for loudspeaker drivers designed to reproduce this range.
Mixer: This is the unit in which audio signals are directed from. A mixer provides for both mic and line input combinations while allowing you to control one or more outputs.
MLP: Meridian Lossless Packing. Encoding format that is able to completely reconstruct the original signal at the receiving end. No information is lost or discarded, regardless of how trivial it might be. Used to encode six channels of high-resolution audio on DVD-A.
Mono: Monophonic sound. One channel.
MP3: MPEG-1 Audio Layer-3. Compression scheme used to transfer audio files via the Internet and store in portable players and digital audio servers.
Natural Sound (NATS): The nonverbal audio that occurs in a non-studio setting. NATS can be used to help characterize the setting.
Noise: An unwanted portion of a signal such as hiss, hum, whine, static, or buzzing.
Nonlinear Editing: Digital audio systems that allow for clips to be extracted without affecting the master recording.
Professional used lighting equipment.| Professional second hand lighting equipment.| Professional pre owned lighting equipment.
Professional used audio equipment.| Professional second hand audio equipment.| Professional pre owned audio equipment.
Second hand audio gear. | Second hand lighting.
Pro audio equipment, second hand amplifiers, DJ, second hand sound systems, second hand Microphones, second hand Media Players.
Outdoor & Indoor LED screens for sale, LED mobile truck.
Light trussing, Gebrauchte Veranstaltungstechnik, used stage equipment Stage & Theatre lighting products.
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