Mutable Instruments Shelves
5-band EQ with individual filter outputs
18 HP Eurorack module
Shelves is a comprehensive 5-band EQ module featuring low shelf, high shelf, and two parametric sections with individual filter outputs. Each parametric section provides bandpass, highpass, and lowpass outputs from state-variable filters, making it both an EQ and filter bank.
Features
- 5-band EQ with shelf and parametric filters
- Individual LP/BP/HP outputs from parametric sections
- Audio-rate CV modulation on all parameters
- Global frequency and gain offset controls
- Wide Q range from 0.5 to 20 (up to 1000 with CV)
- 1V/Oct frequency tracking and 3dB/V gain scaling
- DC-coupled analog signal path
- State-variable filter topology for parametric sections
Controls & Jacks (26)
- Audio Input— Main audio input to the EQ circuit
- Global Frequency CV— Global frequency offset CV input affecting all sections (1V/Oct)
- Low Shelf Gain— Controls cut/boost of low shelf filter (-15dB to +15dB)
- Low Shelf Frequency— Sets the frequency of the low shelf filter (20Hz to 20kHz)
- Low Shelf Frequency CV— CV input for low shelf frequency (1V/Oct)
- Global Gain CV— Global gain CV input affecting all sections (3dB/V)
- Parametric 1 Frequency— Sets the center frequency of first parametric section (20Hz to 20kHz)
- Parametric 1 Gain— Controls cut/boost of first parametric section (-15dB to +15dB)
- Parametric 1 Frequency CV— CV input for first parametric frequency (1V/Oct)
- Low Shelf Gain CV— CV input for low shelf gain (3dB/V)
- Parametric 1 Q CV— CV input for first parametric Q/resonance
- Parametric 1 Gain CV— CV input for first parametric gain (3dB/V)
- Parametric 1 Q— Controls resonance/bandwidth of first parametric section (0.5 to 20)
- Parametric 2 Frequency— Sets the center frequency of second parametric section (20Hz to 20kHz)
- Parametric 2 Gain CV— CV input for second parametric gain (3dB/V)
- Parametric 2 Frequency CV— CV input for second parametric frequency (1V/Oct)
- Parametric 2 Gain— Controls cut/boost of second parametric section (-15dB to +15dB)
- Parametric 2 Q— Controls resonance/bandwidth of second parametric section (0.5 to 20)
- High Shelf Frequency CV— CV input for high shelf frequency (1V/Oct)
- Parametric 2 Q CV— CV input for second parametric Q/resonance
- Parametric 1 BP— Band-pass output from first parametric section
- Main Output— Main processed audio output
- Parametric 1 LP— Low-pass output from first parametric section
- High Shelf Gain CV— CV input for high shelf gain (3dB/V)
- Input Clip— Indicates input signal clipping
- Output Clip— Indicates output signal clipping
How-To Guides
- Basic EQ Setup
- Animated Filter Bank
- Dynamic EQ Curves
Explore the interactive Shelves panel on BleepDex — tap any control to learn what it does.