Dual PT2399 Digi Delay
About the Dual PT2399 Digi Delay PCB
Dual PT2399 Digi Delay is an open source PCB design by ilya-n, published on GitHub. It is a 2-layer board measuring 148.8 × 152.9 mm, with 202 components from 49 distinct parts.
Other key parts include the TL072, TL074, PT2399 and L7805. By type, the board carries 69 resistors, 60 capacitors, 31 connectors, 16 diodes, 9 ICs and 6 transistors.
It belongs with the audio designs in this gallery.
From the project
A dual delay modular synth module
A delay module designed for the Loudest Warning 4U format
Built around two PT2399 delay chips. Inspired equally by the Serge WAD and the Strega, it does clean pretty well but also pushes into the usual 2399 weirdness.
Dual PT2399 delays Single input with gain control and mild overdrive when past about 1 o'clock Switch to have delays in series or parallel Delay can go from short as I think I could manage to well into clicks and squeals territory CV control over delay time of each independently, with attenuverters CV control has an input range of -5 to +5 volts, which should cover the full…
Main components on the Dual PT2399 Digi Delay
Dual PT2399 Digi Delay bill of materials (BOM)
202 components, 49 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 4 | TL072 | DIP-8_W7.62mm_Socket | U1, U2, U3, U7 |
| 2 | TL074 | DIP-14_W7.62mm_Socket | U4, U5 |
| 2 | PT2399 | DIP-16_W7.62mm_Socket | U6, U8 |
| 1 | L7805 | TO-220-3_Horizontal_TabDown | U9 |
| 6 | 2N3904 | TO-92_Inline_Wide | Q1, Q2, Q3, Q4, Q5, Q6 |
| 6 | 108-0901-1 BananaJack_PanelMount Mouser | BananaJack_THT_JohnsonCinch_108-09 | J1, J2, J3, J4, J5, J6 |
| 3 | CONN_1X02_SKT Conn_1x02_Skt | PinSocket_1x02_P2.54mm_Vertical | J7, J8, J9 |
| 5 | CONN_1X04_SKT Conn_1x04_Skt | PinSocket_1x04_P2.54mm_Vertical | J10, J12, J15, J17, J19 |
| 1 | CONN_1X03_SKT Conn_1x03_Skt | PinSocket_1x03_P2.54mm_Vertical | J11 |
| 2 | CONN_1X06_SKT Conn_1x06_Skt | PinSocket_1x06_P2.54mm_Vertical | J13, J14 |
| 5 | CONN_1X04_PIN Conn_1x04_Pin | PinHeader_1x04_P2.54mm_Vertical | J16, J24, J26, J30, J32 |
| 1 | CONN_1X02_SKT Conn_1x04_Skt | PinSocket_1x02_P2.54mm_Vertical | J18 |
| 1 | MOLEX_1X04_KK-254 Molex_1x04_KK-254 | Molex_KK-254_AE-6410-04A_1x04_P2.54mm_Vertical | J20 |
| 4 | CONN_1X02_PIN Conn_1x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J23, J25, J28, J31 |
| 2 | CONN_1X06_PIN Conn_1x06_Pin | PinHeader_1x06_P2.54mm_Vertical | J27, J33 |
| 1 | CONN_1X03_PIN Conn_1x03_Pin | PinHeader_1x03_P2.54mm_Vertical | J29 |
| 2 | 100kB | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_CircularHoles | DELAY_CV_ATTV1, DELAY_CV_ATTV2 |
| 2 | 25kB | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_CircularHoles | DELAY_TIME1, DELAY_TIME2 |
| 4 | 50kB | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_CircularHoles | DRY_LEVEL1, INPUT_GAIN1, WET_LEVEL1, WET_LEVEL2 |
| 1 | 50KB 50kB Thonk | Potentiometer_Alpha_RD901F-40-00D_Single_Vertical_CircularHoles | FEEDBACK1 |
Show 29 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 612-100SP1T1B3M2QEH SW_SPDT Mouser | Toggle_Switch_100SP1T1B3M2QE | SW1, SW2 |
| 12 | 1N4148 | Diode_THT_P7.62mm_Horizontal | D1, D2, D3, D4, D5, D6, D7, D8 +4 |
| 2 | 1N4001 1n4001 | D_A-405_P10.16mm_Horizontal | D13, D14 |
| 2 | 1N5818 | D_A-405_P10.16mm_Horizontal | D15, D16 |
| 16 | 100nF (X7R) | C_Rect_L7.0mm_W3.5mm_P5.00mm | C1, C4, C5, C6, C10, C12, C15, C16 +8 |
| 12 | 10PF 10pF | C_Rect_L7.0mm_W3.5mm_P5.00mm | C2, C3, C7, C8, C9, C11, C17, C18 +4 |
| 2 | 100PF 100pF | C_Rect_L7.0mm_W3.5mm_P5.00mm | C13, C14 |
| 4 | 10UF 10uF | CP_Radial_D6.3mm_P2.50mm | C25, C46, C58, C60 |
| 4 | 560PF 560pF | C_Rect_L7.0mm_W3.5mm_P5.00mm | C27, C28, C49, C50 |
| 2 | 47UF 47uF | CP_Radial_D8.0mm_P3.50mm | C29, C48 |
| 8 | 100NF 100nF | C_Rect_L7.0mm_W3.5mm_P5.00mm | C30, C33, C35, C37, C52, C54, C55, C57 |
| 4 | 4n7F (polypropylene) | C_Rect_L7.0mm_W3.5mm_P5.00mm | C31, C34, C44, C53 |
| 2 | 470nF (X7R) | C_Rect_L7.0mm_W3.5mm_P5.00mm | C32, C51 |
| 2 | 10nF (polypropylene) | C_Rect_L7.0mm_W3.5mm_P5.00mm | C36, C45 |
| 4 | 10uF (Audio) | CP_Radial_D5.0mm_P2.50mm | C38, C39, C42, C43 |
| 3 | 330R 330r | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R4, R8 |
| 16 | 10K 10k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R7, R46, R48, R52, R53, R55, R56 +8 |
| 2 | 15K 15k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R11 |
| 19 | 100K 100k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5, R6, R9, R10, R14, R15, R16, R18 +11 |
| 6 | 47K 47k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R12, R13, R40, R41, R42, R43 |
| 1 | 33K 33k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R17 |
| 2 | 470R 470r | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R19, R20 |
| 4 | 220K 220k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R21, R31, R35, R36 |
| 4 | 560K 560k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R22, R23, R60, R62 |
| 4 | 1k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R24, R25, R50, R51 |
| 2 | 2K2 2k2 | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R26, R29 |
| 2 | 22K 22k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R30, R32 |
| 2 | 82K 82k | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R44, R45 |
| 2 | 2K7 2k7 | Resistor_THT_L6.3mm_D2.5mm_P10.16mm_Horizontal | R54, R66 |
Dual PT2399 Digi Delay design files
The KiCad project lives in the ilya-n/dual-pt2399-digital-delay repository on GitHub; these links point at the commit this page was built from.
Dual PT2399 Digi Delay: common questions
How big is the Dual PT2399 Digi Delay PCB?
The Dual PT2399 Digi Delay measures 148.8 × 152.9 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Dual PT2399 Digi Delay?
202 components, from 49 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Dual PT2399 Digi Delay design files?
From the ilya-n/dual-pt2399-digital-delay repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Dual PT2399 Digi Delay design in my own project?
The repository has no license, so all rights stay with ilya-n. Use it as a reference, and ask the author before reusing the design.
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