Caveman Modules Totem Multimode VCF

video upload by Michigan Synth Works

"Totem is a multimode voltage controlled filter with 16 different filter modes based on the 3109 OTA chip used in classic synths like the Roland SH-101, MC-202, Jupiter-8 and others. $129 USD, Fall 2025

Features:

Massive drive control for endless tone variety
CV control via attenuator
CV control via attenuverter
V/OCT control with half and negative half scaling
Filter Modes:

Mode A B
1 24dB LPF 18dB LPF
2 12dB LPF 6dB LPF
3 12dB HPF + 6dB LPF A 12dB HPF
4 18dB HPF + 6dB LPF 18dB HPF
5 24dB BPF 12dB HPF + 6dB LPF B
6 12dB BPF 6dB HPF
7 12dB Notch + 6dB LPF 12dB Notch
8 18dB Allpass (phase) + 6dB LPF 18dB Allpass (phase)

Specifications

• Width: 12HP
• Depth: 25 mm
• Current Draw: +12 V: 20mA, -12 V: 10 mA"

Caveman Modules 3OSC Features

video upload by Michigan Synth Works

"This is a quick demo of the 3OSC VCO. 3 waveforms are available: the 303 Square, Saw, and Tri. The device also features a hard sync where you can sync two or more devices."

See the announcement post here.

Michigan Synth Works & Neutron Sound Presents Caveman Modules: Low Cost High Quality Euro

Caveman Modules is a collaboration between Michigan Synth Works and Neutron sound focusing on affordable, quality modules with unique features and functionality. Caveman Modules are designed to be simple to use and are perfect for musicians just breaking into the eurorack world while still offering higher level functionality for more advanced users.

Check with dealers on the right for upcoming availability.

The Launch Line-Up:

30SC: A voltage-controlled oscillator inspired by the legendary Roland TB-303 with square, tri, and 2 saw outputs. 3OSC also features an innovative hard sync input for chaining multiple units and an FM modulation attenuverter.

Specifications
• Width: 6HP
• Depth: 25 mm
• Current Draw: +12 V: 6mA, -12 V: 6mA
• Price: US$100

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