Kosmo spring reverb driver

polykit·kosmo-spring-reverb-driver

Kosmo spring reverb driver PCB layout, top view — open source board by polykit

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About the Kosmo spring reverb driver PCB

Kosmo spring reverb driver is an open source PCB design by polykit, published on GitHub. It is a 2-layer board measuring 50 × 200 mm, with 42 components from 25 distinct parts.

Other key parts include the TL074. By type, the board carries 19 resistors, 10 capacitors, 2 transistors, 2 diodes and 1 IC.

It belongs with the audio designs in this gallery.

From the project

Schematics and PCB layout for a spring reverb driver in Kosmo modular format

This repository contains KiCad schematics and PCB layout for a spring reverb driver in Kosmo modular synthesizer format. It is capable to drive reverbs with an impedance from 8 to 600 ohms. There is a short video at https://www.youtube.com/watch?v=zHZOu3KcKBQ.

Just put everything in, all values are marked on the PCB. Start with the lowest profile. The board is also the front panel of the module so components stick out. It is also possible to solder most of the components on the back if wanted.

Kosmo spring reverb driver, from the project README — From the project README

Main components on the Kosmo spring reverb driver

Kosmo spring reverb driver bill of materials (BOM)

42 components, 25 distinct parts.

Qty	Part	Footprint	Refs
1	TL074	DIP-14_W7.62mm_Socket_LongPads	U1
1	BC639	TO-92_Inline_Wide	Q1
1	BC640	TO-92_Inline_Wide	Q2
1	10k	Potentiometer_Single_Vertical_Hole	DRY_WET_POT1
1	50k	Potentiometer_Single_Vertical_Hole	FEEDBACK_POT1
1	100k	Potentiometer_ACP_CA9-H5_Horizontal	GAIN1
2	AudioJack2	Jack_Hole_Square	IN1, OUT1
1	Conn_02x05_Odd_Even	IDC-Header_2x05_P2.54mm_Vertical	POWER1
2	Conn_01x02	Molex_KK-254_AE-6410-02A_1x02_P2.54mm_Vertical	REVERB_IN1, REVERB_OUT1
2	1N4148	D_DO-35_SOD27_P7.62mm_Horizontal	D1, D2
2	100n	C_Disc_D8.0mm_W2.5mm_P5.00mm	C1, C11
2	100u*	CP_Radial_D6.3mm_P2.50mm	C2, C3
1	22n	C_Disc_D8.0mm_W2.5mm_P5.00mm	C5
2	10u	CP_Radial_D5.0mm_P2.50mm	C6, C7
2	22u	CP_Radial_D5.0mm_P2.50mm	C8, C9
1	1n	C_Disc_D8.0mm_W2.5mm_P5.00mm	C10
5	100k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R1, R2, R3, R16, R17
1	10k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R4
3	100*	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R5, R13, R19
2	4k7*	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R6, R7

Show 5 more

Qty	Part	Footprint	Refs
4	10	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R8, R9, R14, R15
1	150*	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R10
1	2k2	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R11
1	220	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R12
1	1k	R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal	R18

Kosmo spring reverb driver design files

The KiCad project lives in the polykit/kosmo-spring-reverb-driver repository on GitHub; these links point at the commit this page was built from.

Layoutkosmo-spring-reverb-driver.kicad_pcb

Kosmo spring reverb driver: common questions

How big is the Kosmo spring reverb driver PCB?

The Kosmo spring reverb driver measures 50 × 200 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Kosmo spring reverb driver?

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

Where can I download the Kosmo spring reverb driver design files?

From the polykit/kosmo-spring-reverb-driver repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Kosmo spring reverb driver design in my own project?

The repository has no license, so all rights stay with polykit. Use it as a reference, and ask the author before reusing the design.

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