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General Features

The microphone modules of the DX series have 3 channels, although they allow connecting up to 5 microphones on their rear panel. ⟶ The MIC-2 and MIC-3 inputs allow connecting a second microphone (2b and 3b). ⟶ Faders 2 and 3 control two microphones simultaneously when inputs 2b and/or 3b are connected. The DX822 model has two 3-microphone modules. It handles 6 microphone faders and supports up to 10 microphones (4 dual inputs). 816 Panel Mics Pn
  1. Gain preset. Must be adjusted so the fader works above the overload mark OVL (-30 dB). ⟶ Working below this level amplifies unnecessarily, causing peak clipping. ⟶ Ideally, work with the fader within the optimal zone (-10 to -20 dB).
  2. Phantom power 48V. Enables/disables for all inputs in the module.
Dynamic microphones can be safely connected to inputs with phantom 48V, as their internal transformer decouples the DC voltage.
  1. EQ. Enables/disables equalization for all microphones in the module.
  2. EQ. Gain controls for frequency bands.
  3. BUSES: Assignment to output buses PGM and REC. Microphones are assigned together to PGM, REC or both. Assignment is post-EQ.
  4. CUE: sends the pre-fader signal to the preview circuit. Activated on each channel.
  5. Working zone: This area indicates the correct working position for nominal signal level and proper input gain adjustment.
    Gain should be adjusted so the fader works above -30 dB. The OVL (9) indication shows overload, meaning excessive input gain.
  6. Main fader. Adjusts the signal level in the mix. Besides raising the faders, to enable the microphones you must press the MASTER MIC button located to the right of the faders.

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Equalization

The equalization is global and affects all microphone channels. The goal is to allow general EQ adjustments that respond to room acoustics characteristics, which are common to all microphones. EQ Features:
  • Bands 1 and 4 (low/high): in Shelving mode, range ±15 dB.
  • Band 2: Peak EQ. Centered at 160 Hz. Can soften the “popping” effect.
  • Band 3: Centered at 6.3 kHz. Can soften “hissing” and sibilant sounds.
816 Eq Curvas Pn

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Compression

The dynamic compressor reduces large level variations in microphones.
The design avoids audible artifacts and simplifies operation. Simply raise the microphone fader levels until the VU meters reach the red zone.
  • Acts on the mix of microphone channels.
  • Cannot be disabled.
  • Activates when signal exceeds 0 VU.
  • Below that level, the signal is not affected.
  • Compression ratio: 10:1, with fast attack and release times.
  • The compressor will reduce gain by a value shown on the MIC Compressor meter.
  • Compression values of 5 to 15 dB are optimal when operating multiple microphones simultaneously.