Radial Engineering Submix
500 Series 4x1 Line Mixer Module



  • Single space 4x1 line mixer for 500 series racks
  • Accustate circuit for low noise at all levels
  • Virtual earth-mix bus configuration
  • Use with instruments and line level sources

The Submix is an ultra-quiet 4 x 1 mixer module designed to fit the 500 series format and enable the studio engineer to combine multiple audio stems such as line level devices and effects together and route them as needed.  The Submix is also ideally suited for keyboards, samplers and drum machines where these need to be mixed into the audio chain.

The design begins with four conveniently located 1/4" unbalanced inputs on the front panel.  Separate level controls for each input are clearly designated for easy manipulation.  These are equipped with Radial's unique dual-gang Accustate circuit that simultaneously sets the input sensitivity and the gain to maximize signal-to-noise.  This enables both instrument and line level signals to easily be interfaced without the need for a typical level reducing pad.  Following the Radial Workhorse and classic mixer designs pioneered by Neve and SSL, the Submix employs a traditional virtual-earth mix-buss circuit topology.  This delivers exceptionally quiet performance even when several Submix modules are combined via the Omniport mix-buss input.

The single-space Submix may be used alone, or doubled-up for full stereo operation.  When used with a 3-slot Radial Powerstrip, you can instantly assemble a 12 x 1 keyboard mixer for live use.  With a full-blown Workhorse, you can go as far as building a 32x2 analog summing mixer or combine various modules to create unique multi-band effects.

The Radial Submix is an innovative studio tool designed to manage audio signals and open the door to creative new patching options.

Submix Applications:

  • Using the Submix with Keyboards: The Submix is the perfect little mixer to mix keyboards into your recording system.  Use two together for stereo by sending the left outputs to one and the right outputs to the other.
  • Using the Submix with effects: Use the Submix as an effects return when combining multiple pedals.  It works with guitar pedals, line level devices or use it to record instruments.
  • Using the Submix for auxiliary inputs: No matter how bigthe studio, there never seem to be enough handy inputs.  The Submix makesit easy to bring tape returns and stereo feeds into your 500 seriesrack.  Just plug in and set the levels.
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