Analog parametric equalizer

Mohit623148·analog-parametric-equalizer

Analog parametric equalizer PCB layout, top view — open source board by Mohit623148

Simulate this board

About the Analog parametric equalizer PCB

Analog parametric equalizer is an open source PCB design by Mohit623148, published on GitHub under the MIT license. It is a 4-layer board measuring 326.3 × 76 mm, with 88 components from 25 distinct parts.

Other key parts include the TVS1400DRV and TL074CDR. By type, the board carries 54 resistors, 10 capacitors, 7 ICs and 2 connectors.

It belongs with the audio designs in this gallery.

From the project

5-band analog parametric audio equalizer using State Variable Filter (SVF) topology — LTspice simulation + KiCad schematic & 4-layer PCB

This project implements a 5-band analog parametric equalizer using the KHN (Kerwin-Huelsman-Newcomb) State Variable Filter topology. It features independent control of center frequency, gain (±9 dB), and Q (bandwidth) for each band — without any cross-coupling between parameters.

The complete design flow covers: - Transfer function derivation and circuit analysis - LTspice behavioral and SPICE-level simulation - Proteus verification with exact TL074CDR models - KiCad schematic capture (EESchema) and 4-layer PCB layout (PCBnew)

Main components on the Analog parametric equalizer

TVS1400DRV TL074CDR

Analog parametric equalizer bill of materials (BOM)

88 components, 25 distinct parts.

Qty	Part	Footprint	Refs
2	TVS1400DRV	WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm	U1, U2
5	TL074CDR	SOIC127P600X175-14N	U3, U4, U5, U6, U7
2	AudioJack4	Jack_3.5mm_CUI_SJ-3524-SMT_Horizontal	J1, J2
1	20k	Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV1
2	100k	Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV2, RV15
9	10k	Potentiometer_Alpha_RD901F-40-00D_Single_Vertical	RV3, RV4, RV5, RV7, RV9, RV10, RV12, RV13 +1
3	10k	Potentiometer_Alpha_RD902F-40-00D_Dual_Vertical	RV8, RV11, RV14
1	10uf	C_Trimmer_Murata_TZC3	C1
1	6.8n	C_Trimmer_Murata_TZC3	C2
2	33nf	C_Trimmer_Murata_TZC3	C3, C4
1	100u	C_Trimmer_Murata_TZC3	C5
2	10n	C_Trimmer_Murata_TZC3	C7, C8
2	3.3n	C_Trimmer_Murata_TZC3	C9, C10
1	80n	C_Trimmer_Murata_TZC3	C11
12	10k	R_0805_2012Metric	R1, R2, R3, R14, R17, R22, R26, R27 +4
1	100	R_0805_2012Metric	R4
22	22k	R_0805_2012Metric	R5, R8, R10, R15, R18, R19, R20, R21 +14
6	5k	R_0805_2012Metric	R5_1, R5_2, R11, R16, R38, R50
2	7.5k	R_0805_2012Metric	R6, R52
1	15k	R_0805_2012Metric	R7

Show 5 more

Qty	Part	Footprint	Refs
2	6.8k	R_0805_2012Metric	R9, R55
3	3.3k	R_0805_2012Metric	R12, R29, R41
3	1k	R_0805_2012Metric	R13, R28, R40
1	47	R_0805_2012Metric	R24
1	3.7k	R_0805_2012Metric	R53

Analog parametric equalizer design files

The KiCad project lives in the Mohit623148/analog-parametric-equalizer repository on GitHub; these links point at the commit this page was built from.

LayoutMini_project.kicad_pcb
SchematicMini_project.kicad_sch

Analog parametric equalizer: common questions

How big is the Analog parametric equalizer PCB?

The Analog parametric equalizer measures 326.3 × 76 mm, has 4 copper layers and is 1.786001 mm thick.

How many components are on the Analog parametric equalizer?

88 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the Analog parametric equalizer design files?

From the Mohit623148/analog-parametric-equalizer repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Analog parametric equalizer design in my own project?

Yes, under the terms of its MIT license, which Mohit623148 chose for the repository.

Similar boards