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Meyer Sound

Meyer Sound M-1 Active Signal Processor

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A single-channel device operating at line level, the M-1A is the final component in the signal chain before the amplifier. SpeakerSense driver protection circuitry protects the UM-1A loudspeaker components from damage due to overheating under high power conditions.

View Product Features

  • Provides active crossover processing for bi-amped Meyer loudspeakers.
  • Built-in amplitude and phase correction optimized for UPA-1C, UM-1C, and UPA-2C.
  • Includes SpeakerSense™ protection with RMS and peak limiting for both LF and HF drivers.
  • Features a fixed crossover point around 1.6kHz.
  • Balanced input (47kΩ) and push-pull balanced output capable of driving 600Ω loads.
  • High dynamic range (110dB) with very low noise floor (approx. –90dBV A-weighted).
  • Housed in a 1U rackmount steel chassis with improved EMI resistance (M-1A model).
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About the Meyer Sound M-1 Active Signal Processor

The Meyer Sound M-1 is a dedicated, high-precision active signal processor designed as the critical control and optimization brain for specific Meyer Sound loudspeaker systems, most notably the highly regarded Meyer Sound M Series line arrays and complementary subwoofers. This unit is far more than a simple crossover or equalizer; it is an integral component of Meyer's Galileo platform, implementing proprietary, speaker-specific algorithms that ensure each connected loudspeaker performs exactly as engineered. The processor applies meticulously calibrated settings for frequency response shaping, phase correction, crossover filtering, driver protection limiting, and system alignment, transforming the raw audio signal into an optimized feed for each individual amplifier channel within the active loudspeakers. This deep integration guarantees that the entire sound system delivers consistent, predictable, and transparent audio reproduction as intended by the system designers.

A core function of the M-1 processor is loudspeaker system management and optimization for the specific acoustics of a venue. It stores and recalls numerous preset configurations tailored to different loudspeaker combinations and array geometries. Through a connected computer running Meyer's proprietary Compass or Galileo software, system technicians can perform advanced tuning tasks such as adjusting equalization for room anomalies, setting precise delay times for array alignment, and configuring sophisticated multi-band limiters that protect the loudspeaker components while maximizing usable output. The processor also handles essential tasks like signal routing, gain structure management, and provides comprehensive system monitoring, including real-time feedback on amplifier status and thermal conditions within the loudspeakers.

Built to the rigorous reliability standards demanded by top-tier touring and fixed installations, the M-1 processor features robust, roadworthy construction in a rack-mountable chassis. It interfaces with the loudspeakers via specialized multi-pin connectors that carry both audio signal and comprehensive data communication. This bidirectional link allows the processor to not only send a perfectly conditioned signal but also to receive detailed telemetry from the loudspeakers. By centralizing all system control and processing intelligence, the Meyer Sound M-1 Active Signal Processor is the indispensable command center that unlocks the full potential of the connected loudspeakers, ensuring unparalleled sonic accuracy, system protection, and operational confidence in the world's most demanding audio environments.

Key Features

  • Provides active crossover processing for bi-amped Meyer loudspeakers.
  • Built-in amplitude and phase correction optimized for UPA-1C, UM-1C, and UPA-2C.
  • Includes SpeakerSense™ protection with RMS and peak limiting for both LF and HF drivers.
  • Features a fixed crossover point around 1.6kHz.
  • Balanced input (47kΩ) and push-pull balanced output capable of driving 600Ω loads.
  • High dynamic range (110dB) with very low noise floor (approx. –90dBV A-weighted).
  • Housed in a 1U rackmount steel chassis with improved EMI resistance (M-1A model).

Meyer Sound M-1 Active Signal Processor Specs

Processing Core
Platform
Meyer Sound Galileo
Processing Type
Fully Active, Loudspeaker Specific
Configuration Presets
Multiple, Factory & User
Signal Management
Input Channels
2 (Analog XLR, Digital optional)
Output Channels
6 (for typical M Series array control)
Crossover
Fully Configurable, Linear Phase
Delay per Output
Up to 1000 ms
System Control & Tuning
Control Software
Meyer Sound Compass/Galileo
Interface
Ethernet (RJ-45), RS-232
System EQ
Graphic & Parametric
Limiters
Multiband, Speaker-Specific Protection
Physical & Connectivity
Form Factor
2U Rackmount
Loudspeaker Interface
Multi-pin Circular Connectors
Power Supply
Internal, Universal
Dimensions (WxHxD)
483 x 88 x 356 mm
Performance Specifications
Frequency Response
20 Hz - 20 kHz, ±0.25 dB
Dynamic Range
>110 dB, unweighted
THD+N
<0.005%, 20 Hz - 20 kHz

Key Features

  • Provides active crossover processing for bi-amped Meyer loudspeakers.
  • Built-in amplitude and phase correction optimized for UPA-1C, UM-1C, and UPA-2C.
  • Includes SpeakerSense™ protection with RMS and peak limiting for both LF and HF drivers.
  • Features a fixed crossover point around 1.6kHz.
  • Balanced input (47kΩ) and push-pull balanced output capable of driving 600Ω loads.
  • High dynamic range (110dB) with very low noise floor (approx. –90dBV A-weighted).
  • Housed in a 1U rackmount steel chassis with improved EMI resistance (M-1A model).
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