Horologic Solum#

Master clock with multi-mode divider and expander


Horologic Solum is a 4HP voltage-controlled clock generator. Three speed modes allow a wide range of rates. Horologic Solum also includes three divisor modes for offsetting up to four outputs. Use the internal clock or chain to an external clock to sync multiple units.

Horologic Uter is an optional expander that offers an extra seven outputs at fixed, musically useful, divisors.

  • Type: Clock
  • Size: 4 HP Eurorack
  • Depth: 0.8 inches
  • Power: 2x5 Eurorack
  • +12 V: 50 mA
  • -12 V: 5 mA

Input & output voltages#

The trigger inputs on HS trigger at around 2.5 V, and the outputs are around 6 V.


Power connector

To power your Noise Engineering module, turn off your case. Plug one end of your ribbon cable into your power board so that the red stripe on the ribbon cable is aligned to the side that says -12 V and each pin on the power header is plugged into the connector on the ribbon. Make sure no pins are overhanging the connector! If they are, unplug it and realign.

Line up the red stripe on the ribbon cable so that it matches the white stripe and/or -12 V indication on the board and plug in the connector.

Screw your module into your case before powering on the module. You risk bumping the module's PCB against something metallic and damaging it if it's not properly secured when powered on.

You should be good to go if you followed these instructions. Now go make some noise!

A final note. Some modules have other headers -- they may have a different number of pins or may say "not power". In general, unless a manual tells you otherwise, do not connect those to power.


Illustration of Horologic Solum's interface

The Tempo knob allows for control of the speed of clock outs while the switch gives coarse control over three different speed modes. The Tempo switch adds in three different tempo speed ranges for coarse control.
Choose the internal clock or chain multiple clocks together for added clock options. When in INT mode, the input jack acts as a CV control to the tempo, and the Tempo knob acts as an offset. EXT mode expects an external clock, but this mode can also be used to stop the INT clock if no external clock is applied.
Button and input jack: resets the clock to the beginning of the measure. The button also pauses the clock while it is held down.
2O4 (Divisor Mode)
Horologic Solum has three divisor modes. It can be set to divide by powers of 2 (2, 4, 8), odd numbers (3, 5, 7), or powers of 4 (4, 16, 64). Each yields different rhythmic patterns.
Clock outs
Horologic Solum offers four clock outputs. The numbers next to the jacks correspond to the divisor used in each different mode.

Horologic Uter#

Illustration of Horologic Uter's interface

Horologic Uter is an optional expander that offers seven fixed-divisor clock outputs.

Patch tutorial#

Horologic Solum and Horologic Uter are easy to use. Simply plug any output into any trigger input. Experiment with the Tempo dial and switch and Mode switch to get interesting, diverse, and useful patterns.


We will repair or replace (at our discretion) any product that we manufactured as long as we are in business and are able to get the parts to do so. We aim to support modules that have been discontinued for as long as possible. This warranty does not apply to normal wear and tear, including art/panel wear, or any products that have been modified, abused, or misused. Our warranty is limited to manufacturing defects.

Warranty repairs/replacements are free. Repairs due to user modification or other damage are charged at an affordable rate. Customers are responsible for the cost of shipping to Noise Engineering for repair.

All returns must be coordinated through Noise Engineering; returns without a Return Authorization will be refused and returned to sender.

Please contact us if you think one of your modules needs a repair.

Special thanks#

  • Shawn Jimmerson
  • Skyler "kittyspit" King
  • William Mathewson
  • Mickey Bakas
  • Tyler Thompson
  • Alex Anderson