Audio-Technica AT-DMM828 smart mixer

Expanding its SmartMixer family of automatic mixers, Audio-Technica has released the AT-DMM828.

A microprocessor-controlled, programmable, automatic-switching eight-channel matrix mixer, the unit is designed for applications including installed sound/sound reinforcement, houses of worship, broadcast and recording.

Audio-Technica AT-DMM828 Key to its application is its ability to keep the number of open microphones to a minimum, reducing background noise, feedback and other distractions. Additionally, the mixer uses ‘correlation’, which analyses and interprets redundancy of source material between channels in real time and may in turn favour the dominant channel, simplifying the layout/output and reducing feedback, phase issues and so on.

The AT-DMM828 can be used with low-impedance dynamic or condenser microphones (including wireless microphone systems), as well as line-level sources. Each of the eight balanced inputs provides switchable 48V phantom power; attenuation is also selectable on each input to allow use with line-level signals. The mixer's outputs are balanced and non-inverting. All audio connections terminate in block screw connectors.

Up to 16 AT-DMM828 units can be daisy-chained via Cat5e cabling for a total of 128 channels of inputs. The interconnection carries control bus, audio, and configuration data between mixers. Multiple mixers linked in this way will operate as if they are a single mixer, therefore, microphones activated on any mixer will cause the appropriate switching functions to occur.

Each AT-DMM828 includes two separate external control system interfaces: Individual channel contact closures (via DB25 connector) and PC control (via RS232 connector or USB). The RS232 connector can also be used to connect an external third-party control system (Crestron or AMX) using open disclosure communication protocol to control the mixer.

Key features:

· 48V phantom power (individually selectable)

· Gate attenuation (0dB to full mute in steps of 1dB)

· Gate hold time adjustable (0s to 6s in 0.1 s steps)

· Mic on threshold level adjustable (Auto/Manual)

· Signal level meter (Peak/RMS)

· Signal generator (Sine wave/Pink noise/White noise)

· Parametric EQ (34band/4-band)

· Filter (low-pass/high-pass/low shelf/high shelf/notch/all-pass)

· Limiter

· Delay (output channel only)

· 8×8 full matrix-mixing (extends to 128×8)