Inserting Surround Effect Plug-ins

Logic Pro offers a number of surround effect plug-ins, and also includes surround versions of the Sculpture and ES2 synthesizers. Your Audio Units instruments and effects may also work in surround.

Important: The project surround format determines the surround format of plug-ins.

To insert a surround effect plug-in
  1. Set the channel strip’s output to Surround.

  2. Click any Insert slot, then browse to the Mono → Surround (on mono channels), Stereo → Surround (on stereo channels), or Surround version (on surround channels) of the desired plug-in.

    As an example on a stereo format channel strip, navigate to Delay > Delay Designer > Stereo → 5.1 (ITU 775). If the project surround format is set to 7.1 (SDDS), the Plug-in menu of a stereo channel strip is displayed as follows:  Delay > Delay Designer > Stereo → 7.1 (SDDS).

Tip: It is possible to release the mouse pointer on the plug-in name, instead of navigating all the way through the hierarchy to the channel format. This automatically opens the plug-in using the default channel strip format.

To insert plug-ins that do not match the channel format
  • Option-click a channel strip Insert slot.

    The Plug-in menu displays all formats the plug-in has to offer, rather than being limited to the matching format.

    Any down- or upmixing that may be necessary will happen automatically.

    • The default format of software instruments is stereo (if available). Mono and the project surround format are offered as additional formats.

    • The default format of effect plug-ins is the current channel strip format (at the insert point in the signal path).

    • In addition, all plug-in format variations (based on the current channel strip input format, and all available plug-in output formats) are offered, up to the maximum allowed by the project surround format.

    • Logic Pro effect plug-ins can also be operated in a multi-mono configuration, based on the project surround format.

Logic Pro automatically performs surround down and upmixes whenever the format of the input and output channels don’t match. For example, if you insert a quad plug-in into a 5.1 bus, Logic Pro performs a downmix from 5.1 to Quad, followed by an upmix back to 5.1.