Black Mult - Computer keyboard Erica Synths - Free user manual and instructions

Product Type	Eurorack Synthesizer Module
Brand	Erica Synths
Model	Black Mult
Module Width	4HP
Module Depth	25mm
Power Consumption	+25mA
Max Input Level	-10V to +10V
Input Impedance	DC coupled
Number of Inputs	2 (normalised to first output)
Number of Outputs	6 (2x3 or 1x6)
Output Type	Active buffered, exact copies
Offset Switches	±1V per channel (octave transpose)
Hidden Feature	Custom offset on channel A (0-5V via trimpot)
Operating Temperature Range	-20°C to +50°C
Compliance	EU guidelines, RoHS conforming
Safety Precautions	Keep away from liquids, avoid extreme temperatures
Maintenance	Clean with dry cloth only; no solvents
Repair Policy	Warranty applies only with original packaging; shipping in original box required
Intended Use	Splitting CV, clock, or audio signals in modular synthesizers

Frequently Asked Questions - Black Mult Erica Synths

What is the Erica Synths Black Mult?

The Black Mult is an active buffered multiple module for Eurorack synthesizers. It can split one input signal into up to six identical outputs (or 2x3 with two inputs) and includes ±1V offset switches for octave transposition.

How many outputs does the Black Mult have?

It has six outputs. When only one input is used, all six outputs carry the same signal. If a second input is patched, it becomes a 2x3 multiple with three outputs per channel.

What is the purpose of the offset switches?

The switches add or subtract 1V from the incoming CV signal. This is useful for transposing a VCO by one octave up or down when using a 1V/oct input.

What is the hidden custom offset feature?

On channel A, you can set a user-defined initial bias (0-5V) by removing the jumper on the back and adjusting the trimpot on the front panel. This bias is applied when no input is patched to IN A.

Can the Black Mult handle audio signals?

Yes, the inputs are DC-coupled, so it can split CV, clock, and audio signals with high accuracy.

What are the power requirements?

The module consumes +25mA from the +12V rail. It does not require a -12V rail.

How do I transpose a VCO using the Black Mult?

Patch your CV source to an input and take an output to the VCO's 1V/oct input. Flick the offset switch to add or subtract 1V, which transposes the VCO by one octave.

What is the maximum input voltage?

The maximum input level is -10V to +10V. The module can handle typical Eurorack signal levels.

How should I clean and maintain the module?

Use a soft dry cloth to clean the front panel. Do not use any liquids or solvents. Keep the module away from moisture and extreme temperatures.

What is the warranty policy for Erica Synths modules?

Warranty covers manufacturing defects. For returns or repair, the module must be shipped in its original packaging. Check www.ericasynths.lv for full terms.

USER MANUAL Black Mult Erica Synths

Erica Black Series include high-end, unique functionality and superior quality modules. Only the best, highest quality components are used, all inputs and outputs are protected against undesired overvoltage. When designing Black Series, we put design and usability superior. Big knobs are assigned to functions that make difference in sound. Erica Black series consist of range of modules that are needed to put together entire synth. Enjoy!

Erica Synths Black Stereo Delay Erica Synths Black Multi is highly accurate active buffered 2x1to3 or 1to6 multiple that will work for signal splitting in any circuit, including driving several VCOs in tune from one CV source. "Octave" or +-IV offset switches on both channels allow to add or subtract one volt form each channel thus transposing VCOs one octave up or down. Hidden feature - custom offset - allows to set user defined offset on the first channel.

SPECS:

Max input level	-10V - +10V
Power	consumption	+25mA,
Module	width	4HP
Module	depth	25mm

graph TD
    A["IN A"] -->|+1V| B["OUTA1"]
    A -->|-1V| C["OUTA2"]
    A --> D["OUTA3"]
    A --> E["OUTB1"]
    A --> F["OUTB2"]
    A --> G["OUTB3"]
    H["Multi"] --> I["erica"]

SWITCH

Switches add or subtract 1V from the incoming CV signal. When patching the outputs to a 1V/oct input of a VCO, you can transpose the VCO for an octave.

INPUTS

Apply signal, you wish to split here! Input is DC coupled, so you can use it for splitting CV, clock or audio signals. This module is actually 2x3 multiple, and second input is normaled to the first output, so if nothing is patched in the second input, you get one signal splitted to 6 outputs, OR if you plug a patchable in INPUT2, you automatically get 2x3 multiple. Each section has its bias switch. The top section of the module has hidden feature – optional initial bias, meaning, if nothing is patched in IN A, the module automatically adds user preset voltage (0...5V) to the output signal. In order to activate it, remove the jumper on the back of the module and use a small screwdriver to access the trimpot at the front panel and set the desired initial bias.

OUTPUTS

On outputs you get 6 or 2x3 identical independent signals – exact copies of input signals or biased ones depending on the setting of the transpose switches.

SAFETY INSTRUCTIONS

Please follow the instructions for use of the Erica Synths module below, 'cause only this will guarantee proper operation of the module and ensure warranty from Erica Synths.

Water is lethal for most of the electric devices, unless they are made waterproof. This Erica Synths module is NOT intended for use in a humid or wet environment. No liquids or other conducting substances must get into the module. Should this happen, the module should be disconnected from mains power immediately, dried, examined and cleaned by a qualified technician.

Do not expose the module to temperatures above +50°C or below -20°C. If you have transported module in extreme low temperatures, leave it in room temperature for an hour before plugging it in.

port the instrument carefully, never let it drop or fall Warranty does not apply to modules with visual poses.

module has to be shipped in the original packaging any module shipped to us for return, exchange and/or my repair has to be in its original packaging. All other tries will be rejected and returned to you. Make sure up the original packaging and technical documentation.

device complies to the EU guidelines and is manufac-RoHS conforming without use of lead, mercury, alum and chrome. Nevertheless, this device is special and disposal in household waste is not recommended.

User manual by Girts Ozolins@Erica Synths. Design by Ineta Briede@Black8.

Copying, distribution or any commercial use in any way is prohibited and needs the written permission by Erica Synths. Specifications are subject to change without notice. In case of any questions, feel free to contact us through www.ericasynths.lv or via e-mail [e-mail]

You will find Erica Synths terms of warranty at www.ericasynths.lv Items for return, exchange and/or warranty repair have to be sent to: Erica Synths

Andrejostas Str. 43

Riga

Latvia

LV-1045