The FX in Omnisphere are organized into Racks, with each Rack containing up to four FX Units.

PATCH FX:

A Patch in Omnisphere can contain up to four racks of four FX Units each, for a total of sixteen FX Units in a single Patch.

To access the FX racks for a Patch, select a Part in the header and then select the FX button.

Each Layer (A & B) of a Patch has its own FX Rack. The FX in these racks affect the specific Layer into which they’re inserted. These are Pre-fader Insert FX.

The A & B racks feed a Common rack, which affects both layers.

The Common and A & B racks can use their “Aux Send” control in the top right to send audio to the Aux rack. Racks A & B can send audio Pre or Post Layer Level via the “Pre – Post” switch. The level of the Aux rack output can be controlled from the “Aux Return” slider in the top right.

MULTI FX:

A MULTI in Omnisphere can contain up to four Aux Send Racks plus a Master Rack, for a total of twenty FX Units.

To access the FX Racks for the four Aux Sends and the MASTER Rack, select the MULTI tab in the header and then select the FX button.

Each of the four Aux Sends has its own FX Rack. The four Aux FX Racks can be used by any of the eight Parts in a MULTI using the Aux Sends on the Mixer page.

The final FX Rack in the signal chain is the Master Rack. All audio routed through OUT A runs through the Master FX Rack.

In summary, a MULTI can have up to 20 FX Units loaded in the MULTI FX racks, plus 8 Parts containing up to 16 FX Units each. This means a fully-loaded MULTI can have as many as 148 active FX Units (in 37 Racks) loaded at once! Of course, actually running that many simultaneous FX would require a very powerful computer.

Below is the effects signal flow to give you an idea how Omnisphere’s effects are chained.

Signal Flow

Each FX Rack has four FX Slots. The signal flow of every FX Rack type is in series – feeding the audio from the top slot down. An example of this is illustrated below:

  • In this example, the audio first goes through Stompbox Modeler FX Unit in the top slot. 
  • The distorted audio is then sent into the Analog Phaser unit in the second slot.
  • The distorted and phased audio is then routed into Innerspace for some creative ambient processing.
  • The output of Innerspace is sent to the Pro-Verb unit in the bottom slot.

NOTE: The Master rack affects parts uses OUT A only.