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Meyer Sound M3D TOP/SUB Sound Package Used, Second hand

Ref. code: 1.01.705
 Meyer Sound M3D TOP/SUB Sound Package Used, Second hand
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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


M3D-SUB : Directional Subwoofer



The M3D-Sub directional subwoofer has an operating frequency range of 29 Hz to 95 Hz with a maximum peak output of 140 dB SPL. It is primarily intended to augment the M3D line array and MILO high-power curvilinear array loudspeakers when extremely powerful, full-range sound reproduction is desired, and is suited to any low-frequency reinforcement requirement.
Incorporating the same proprietary directional control technology used in the M3D, the M3DSub projects powerful bass forward into the audience while dramatically reducing lowfrequency bleed onto the stage and into backstage areas. Due to its exceptional linearity, the M3D-Sub’s directional characteristics are maintained even at extremely high sound pressure levels. In combination with M3Ds or MILOs, the M3D-Sub extends overall system power bandwidth and frequency response to 30 Hz. M3D-Subs can be flown with M3Ds or MILOs in the same vertical array, in a parallel array or ground stacked. The vented enclosure houses two forward-facing 18-inch Meyer Sound cone drivers, which are back-vented and feature lightweight neodymium magnets. Two rearfacing Meyer Sound 15-inch cone drivers, responding to sophisticated phase manipulation circuits, control and reinforce the output of the front-facing drivers affording cardioid coverage to 30 Hz.
The M3D-Sub is self-powered by an integral four-channel class AB/H complementary MOSFET power amplifier with 3370 watts burst capability (two channels, 1125 watts per channel; two channels, 560 watts per channel). TruPower limiting aids driver protection, minimizes power compression and permits high constant output. The Intelligent AC power supply affords automatic voltage selection, EMI filtering, soft current turn-on and surge suppression. Phase-corrected active processing circuits help maintainexcellent performance and reliability, and the high common-mode rejection of the laser-trimmed differential input permits long signal runs through a simple shielded twisted pair cable. The amplifier, control electronics and power supply are integrated into a field-replaceable module.
The M3D-Sub’s vented, multi-ply hardwood enclosure is coated with a textured black finish, weather protected and features a folding rain hood that safeguards the electronics. Drivers are protected by metal grilles. Standard QuickFly rigging uses captive hardware; the optional MG-3D/M multipurpose grid accommodates a variety of flown or stacked configurations.
Meyer Sound’s RMS remote monitoring system interface is fitted standard and provides comprehensive monitoring of system performance parameters over a Microsoft Windows network.



Features & Benefits
  • Directional technology provides improved low-frequency gain before feedback
  • Prodigious output to cover even the largest venues
  • Cardioid pattern control helps reduce reverberation
  • Fully weather protected for long-lasting service in demanding environments
  • 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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Active: Powered. An active crossover is electrically powered and divides the line-level signal prior to amplification. An active speaker includes an active crossover and built-in amplifier.

Actuality: Audio from an announcer speaking.

Amplifier: A component that increases the gain or level of an audio signal.

Balanced Input: A connection with three conductors: two identical signal conductors that are 180 degrees out of phase with each other, and one ground. This type of connection is very resistant to line noise.

Bandpass: A two-part filter that cuts both higher and lower frequencies around a center band. A bandpass enclosure cuts high frequencies by acoustic cancellation and low frequencies by natural physical limitations on bass response.

Bandwidth: In audio, the range of frequencies a device operates within. In video, the range of frequencies passed from the input to the output. Bandwidth can also refer to the transmission capacity of an electronic communications device or system the speed of data transfer,is very important when planning a meeting for the attendees to stay connected.

Bass: Low frequencies those below approximately 200 Hz.

Bi-Wiring: A method of connecting an amplifier or receiver to a speaker in which separate wires are run between the amp and the woofer and the amp and the tweeter.

Boost: To increase, make louder or brighter opposite of attenuate.

Bridging: Combining two channels of an amplifier to make one channel that more powerful. One channel amplifies the positive portion of an audio signal and the other channel amplifies the negative portion, which are then combined at the output.

CD: Compact Disc. Ubiquitous digital audio format. Uses 16-bit/44.1-kHz sampling rate PCM digital signal to encode roughly 74 or 80 minutes of two- channel, full-range audio onto a 5-inch disc.

CD-R: Recordable Compact Disc.

CD-RW: Rewritable Compact Disc.

Channel: In components and systems, a channel is a separate signal path. A four-channel amplifier has at least four separate inputs and four separate outputs.

Coloration: Any change in the character of sound (such as an overemphasis on certain tones) that reduces naturalness.

Crossover: A component that divides an audio signal into two or more ranges by frequency, sending, for example, low frequencies to one output and high frequencies to another. An active crossover is powered and divides the line-level audio signal prior to amplification. A passive crossover uses no external power supply and may be used either at line level or, more commonly, at speaker level to divide the signal after amplification and send the low frequencies to the woofer and the high frequencies to the tweeter.

Crossover Frequency: The frequency at which an audio signal is divided. 80 Hz is a typical subwoofer crossover point and is the recommended crossover point in theatrical and home THX systems. Frequencies below 80 Hz are sent to the subwoofer signals above 80 Hz are sent to the main speakers.

Cut: To reduce, lower opposite of boost.

Decibel (dB): A logarithmic measurement unit that describes a sound`s relative loudness, though it can also be used to describe the relative difference between two power levels. A decibel is one tenth of a Bel. In sound, decibels generally measure a scale from 0 (the threshold of hearing) to 120-140 dB (the threshold of pain). A 3dB difference equates to a doubling of power. A 10dB difference is required to double the subjective volume. A 1dB difference over a broad frequency range is noticeable to most people, while a 0.2dB difference can affect the subjective impression of a sound.

Delay: The time difference between a sonic event and its perception at the listening position (sound traveling through space is delayed according to the distance it travels). People perceive spaciousness by the delay between the arrival of direct and reflected sound (larger spaces cause longer delays.

Diaphragm: The part of a dynamic loudspeaker attached to the voice coil that produces sound. It usually has the shape of a cone or dome.

Diffusion: In audio, the scattering of sound waves, reducing the sense of localization. In video, the scattering of light waves, reducing hot spotting, as in a diffusion screen.

Digital Audio Server: Essentially a hard drive, a digital audio server stores compressed audio files (like MP3 or WMA). Most include the processing to make the files, and all have the ability to play them back.

Direct-Stream Digital: A format for encoding high-resolution audio signals. It uses a 1-bit encoder with a sampling rate of 2,822,400 samples per second (verses 44,100 for CD). Used to encode six high-resolution channels on SACD.

Dispersion: The spread of sound over a wide area.

Distortion: Any undesired change in an audio signal between input and the output.

DNR: Dynamic Noise Reduction. A signal-processing circuit that attempts to reduce the level of high-frequency noise. Unlike Dolby NR, DNR doesn't require preprocessing during recording.

Dolby B: A noise-reduction system that increases the level of high frequencies during recording and decreases them during playback.

Dolby C: An improvement on Dolby B that provides about twice as much noise reduction.

Dolby Digital: An encoding system that digitally compresses up to 5.1 discrete channels of audio (left front, center, right front, left surround, right surround, and LFE) into a single bitstream, which can be recorded onto a DVD, HDTV broadcast, or other form of digital media. When RF-modulated, it was included on some laser discs, which requires an RF-demodulator before the signal can be decoded. Five channels are full-range the .1 channel is a band-limited LFE track. A Dolby Digital processor (found in most new receivers, preamps, and some DVD players) can decode this signal back into the 5.1 separate channels. Most films since 1992`s Batman Returns have been recorded in a 5.1 digital format, though a number of films before that had 6-channel analog tracks that have been remastered into 5.1.

Dolby EX: An enhancement to Dolby Digital that adds a surround back channel to 5.1 soundtracks. The sixth channel is matrixed from the left and right surround channels. Often referred to as 6.1. Sometimes referred to as 7.1 if the system uses two surround back speakers, even though both speakers reproduce the same signal. Software is backwards-compatible with 5.1 systems, but requires an EX or 6.1 processor to obtain additional benefit.

Dolby Pro Logic: An enhancement of the Dolby Surround decoding process. Pro Logic decoders derive left, center, right, and a mono surround channel from two-channel Dolby Surround encoded material via matrix techniques.

Dolby Pro Logic II: An enhanced version of Pro Logic. Adds improved decoding for two-channel, non-encoded soundtracks and music.

Driver: A speaker without an enclosure also refers to the active element of a speaker system that creates compressions and rarefactions in the air.

DSP: Digital Signal Processing. Manipulating an audio signal digitally to create various possible effects at the output. Often refers to artificially generated surround effects derived from and applied to two-channel sources.

DTS: Digital Theater Systems. A digital sound recording format, originally developed for theatrical film soundtracks, starting with Jurassic Park. Records 5.1 discrete channels of audio onto a handful of laser discs, CDs, and DVDs. Requires a player with DTS output connected to a DTS processor.

DTS ES: An enhanced version of the 5.1 DTS system. Like Dolby's Surround EX, a sixth channel is added. In some cases (DTS ES Discrete), the sixth channel is discrete. Software is backwards-compatible with 5.1 systems, but requires an ES or 6.1 processor to obtain additional benefit. Neo: 6 is a subset of DTS ES that creates 6.1 from material with fewer original channels.

Dynamic Range: The difference between the lowest and the highest levels in audio, it&'s often expressed in decibels. In video, it's listed as the contrast ratio.


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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