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LeafAudio - VCF-X

Product information "LeafAudio - VCF-X"

The LeafAudio VCF-X carries forward a unique analog filter design originally developed by TubeOhm - now officially continued and supported by LeafAudio.

At its core, the circuit combines two well-established concepts: the SMR4, known for its warm, smooth and musical character, and the 4PM (4-Pole Mission), which introduced a wide range of selectable filter responses. This fusion results in a rich-sounding 4-pole filter that feels organic and full, offering far more flexibility than classic single-mode designs.

The Mode control lets you move through 15 different filter types and slopes - from lowpass, highpass and bandpass to notch and phaser-style responses. The current setting is shown on the built-in LED matrix what makes it intuitive to explore and perform with.

The “X” in VCF-X stands for this expanded range of possibilities – different modes, shapes and sonic variations within a single filter design.

The module features a black aluminum panel with clean white print, giving it a clear and modern look in any Eurorack system. Graphic design by Hannes Pasqualini, the same designer behind LeafAudio’s complex oscillator combo VCO-1 & EXP-1. It blends seamlessly with the existing LeafAudio range and is an ideal choice for anyone who appreciates the classic LeafAudio Eurorack aesthetic.

All SMD components come pre-soldered, so you only need to assemble the through-hole parts. This makes the VCF-X ideal for beginners, workshops and first DIY builds, and still delivers a deep and rewarding analog sound.

With the VCF-X, LeafAudio continues the original TubeOhm design – preserving its character and opening it up to a new generation of builders.

Features
• Multimode 4-pole filter
• Frequency range 20 Hz to 22k Hz
• Max. signal input  5 Vp
• Resonance control int./ext. 0-10 V
• Cutoff control int./ext. 0-10V (V/OCT)
• Modulation   ext.  0-10 V
• Inbuild filter FM
• Inbuild VCA , ext. control 0..10 v
• 15 filter modes 6+12+18+24dB LP / 6+12+18dB HP / 6+12dB BP / HP2LP /HP3LP / Notch / Phaser / Notch+LP1 / Phaser+LP1. CV: 0-10 V
• Current:  50 mA @ 12 V, 30 mA  @ -12 V
• Width: 10 HP
• Depth: 35 mm
• Weight: 0,146 kg

DIY-Kit-Type
THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
Current draw +12 V [mA]: 18
Current draw -12 V [mA]: 17
DIY Level: Medium/Advanced
Depth [mm]: 35
Panel / Color: Black Alu
Width [HP]: 10
Format: 3U
Manufacturer "LeafAudio"
LeafAudio is the brand of Manuel Richter. He is a trained drummer & audio engineer, studio- and live-musician, was interested in electronic and experimental sounds since his childhood. He made releases and lots of live appearances as Xabec. He toured with Haujobb and others, was producer & songwriter for Anne Clark. LeafAudio started as Manuel's studio in 2008, he made lots of mixings and masterings but quickly ended up doing one of the most well known DIY workshop series in Germany by the mid 2010s. Meanwhile LeafAudio is most well known for their Microphonic Soundboxes and other sound design instruments which became super popular worldwide. Most of the production is still made by hand in Leipzig, Germany.

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Legal Manufacturer Information (GPSR compliance)

Manufacturer / Hersteller:
Tech Creation Lab Leipzig UG (haftungsbeschränkt)
Selneckerstr. 26
04277 Leipzig, Germany
support@exploding-shed.com
WEEE-Nr.: DE94097895


Product Safety Information

Please read this safety guide before installation or use.

Important Notice & Intended Use
• This kit is intended for adult users experienced in electronics and modular synthesis.
• Assembly, including soldering, is required.
• Proper testing and installation are essential to ensure safe and functional operation.
• The completed module is intended for installation in a Eurorack-compatible synthesizer system powered by ±12V and +5V.
• Use outside this scope may result in malfunction, damage, or safety risks.

General Warnings

Electrical Hazards:
• Ensure the power supply matches the module’s specified voltage and current ratings (refer to the product manual). Incorrect voltage can damage the module and pose a safety risk.
• Never connect or disconnect the module while the Eurorack system is powered on.
• Wrong polarity can damage your module or system. Make sure the module is connected with correct polarity.

Heat Generation:
• The module may generate heat during operation. Ensure proper ventilation within your Eurorack case to prevent overheating.

Sharp Edges:
• The module’s faceplate and components may have sharp edges. Handle with care to avoid cuts or scratches.

Small Parts:
• Contains small parts that could cause a choking hazard. Keep away from children and pets.

Compatibility:
• This module is designed specifically for Eurorack-compatible systems. Connecting it to non-compatible systems may result in damage or malfunction.

Assembly Requirements
• Soldering skills are required to complete the module.
• Ensure a clean, well-lit and ventilated workspace free of flammable materials during assembly.
• Use appropriate tools and safety equipment, such as eye protection.

Testing
• Test the module thoroughly for shorts or incorrect assembly before powering it in your Eurorack system. When the unit has malfunctions due to incorrect assembly, the entire Eurorack system might be damaged. It's a good idea to test it in a separate case with only that single module.
• Use a multimeter or other appropriate tools to confirm proper functionality.

Installation and Use
• Mount securely in a Eurorack case using the provided screws.
• Use only the included or manufacturer-recommended power cable.
• Connect only when the power is off.
• Follow the module's user guide for instructions on operation. Do not exceed the input/output limits specified.

Responsibility
Users are solely responsible for proper assembly and testing. Contact manufacturer support for assistance if needed.

Environmental Safety
• Dispose of the module, its components, and packaging in accordance with local electronic waste regulations.

Liability Disclaimer
• The manufacturer or distributor is not responsible for any injury, damage, or malfunction resulting from improper installation, use, or modification of this product.

Contact Information
For further assistance, contact the manufacturer or our shop support team at:
Tech Creation Lab Leipzig UG (haftungsbeschränkt)
Selneckerstr. 26, 04277 Leipzig, Germany
support@exploding-shed.com

DIY Kits

At Exploding Shed, we mainly sell DIY kits. This means you'll need to assemble and solder the modules yourself.

We offer different types of DIY kits. Some require you to solder only the mechanical components, such as knobs, jacks, and switches, while others require you to solder every component, from ICs and resistors to capacitors.

You'll find detailed information about the difficulty of each build in the module's product description or in the manufacturer's build guide, which is linked at the bottom of the product page.