# 2399 triple splashback delay **URL:** \ **Category:** KOSMO MODULES\ **Created:** [May 14, 2020, 11:24am UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879 "2020-05-14T11:24:36Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 11:24am UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/1 "2020-05-14T11:24:36Z")
![2399 image 8](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/113c7a63e3720dee11ec3237b6291b3fa9df43a8.jpeg) Link to the information page :- [https://www.lookmumnocomputer.com/projects#/2399-triple-splashback](https://www.lookmumnocomputer.com/projects#/2399-triple-splashback) BOM :- [https://www.lookmumnocomputer.com/s/BILL-OF-MATERIALS.zip](https://www.lookmumnocomputer.com/s/BILL-OF-MATERIALS.zip) im working on the page over the next. couple of days. a video will be going up about this project also, and hopefully a functioning stripboard layout! ![2399 image 7](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/1ab3a91df6e920c50142df4093ec8a7d27bc5ea8.jpeg) ![2399 image 6](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/5/582178dc7b974cf62c96f4a3003170a841773dc6.jpeg) ![2399 image 5](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/aaaf136bb70c2c734d30622d8e469d27f016a13a.jpeg) ![2399 image 4](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/c562c2157ffc5e3c5d039bf8f0a92aa79e86323e.jpeg) ---
**Author:** ![klausklaerwerk](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/klausklaerwerk/32/4945_2.png) [@klausklaerwerk](https://lookmumnocomputer.discourse.group/u/klausklaerwerk)\ **Post date:** [May 14, 2020, 11:45am UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/2 "2020-05-14T11:45:04Z")
fuuuuuukk yeah! really looking forward to this! ---
**Author:** ![AstralDad](https://avatars.discourse-cdn.com/v4/letter/a/e19b73/32.png) [@AstralDad](https://lookmumnocomputer.discourse.group/u/AstralDad)\ **Post date:** [May 14, 2020, 12:07pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/3 "2020-05-14T12:07:02Z")
Absolutely gorgeous!!! ---
**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\ **Post date:** [May 14, 2020, 12:23pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/4 "2020-05-14T12:23:46Z")
Damn, that’s nice!!! ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [May 14, 2020, 1:13pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/5 "2020-05-14T13:13:14Z")
I understand RV1, RV5, and RV9 control how much of the delayed signal is mixed with the input to be fed back to the PT2399. RV4, RV6, and RV8 control the delay time. RV2 attenuates the CV. What do RV3, RV6, and RV11 do? ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 1:28pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/6 "2020-05-14T13:28:39Z")
so how the feedback and mix works in the pt2399 echo circuit is a case of getting the right level. in essence the feedback is more of a fine tune of the level. RV3,RV6,RV11 completely zeroed means the feedback amount of the delay with the mix from half way to max is relatively low in comparison. when you turn up feedback you go into territories where your straddling between minimal echo and self oscillation. the mix isn’t a true mix and the feedback isn’t a true feedback, the feedback on zero stops the circuit going to super delay town and feedback extremes. [http://www.princeton.com.tw/Portals/0/Product/PT2399\_1.pdf](http://www.princeton.com.tw/Portals/0/Product/PT2399_1.pdf) if you check the data sheet, its how they have it setup, and I felt no need to change it as its a delay type and topology I have worked with for many years, a lot of pedals and stuff use this method with singular pt2399’s so its just building on it and just looking under more rocks in the stream of lofi delay forest. when your fiddling with them you’ll see why they are both needed. ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [May 14, 2020, 1:37pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/7 "2020-05-14T13:37:20Z")
The PT2399 datasheet’s pretty minimal, there’s more detail here: [https://www.electrosmash.com/pt2399-analysis](https://www.electrosmash.com/pt2399-analysis) ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 1:45pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/8 "2020-05-14T13:45:27Z")
yeah of course! that page helped me with a weird power problem. ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 4:11pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/9 "2020-05-14T16:11:18Z")
also just a heads up! this is the first module I think is worth making cross format because of its funky sound. so im putting together a pcb that is small enough to fit behind all modules, however it will be panel wiring! ---
**Author:** ![Caustic](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/caustic/32/15588_2.png) [@Caustic](https://lookmumnocomputer.discourse.group/u/Caustic)\ **Post date:** [May 14, 2020, 4:15pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/10 "2020-05-14T16:15:41Z")
Hey @lookmumnocomputer, looks like these components are pretty easy to source! Can you confirm if this is the right IC: ## PT2399 2399 ECHO AUDIO PROCESSOR GUITAR IC [https://www.taydaelectronics.com/pt2399-2399-echo-audio-processor-guitar-ic.html](https://www.taydaelectronics.com/pt2399-2399-echo-audio-processor-guitar-ic.html) * * * # Tentative BOM Tayda Cart: ### Looks like you can get all parts @ Tayda. * * * # 2N3904 NPN GENERAL PURPOSE TRANSISTOR [https://www.taydaelectronics.com/2n3904-npn-general-propose-transistor.html](https://www.taydaelectronics.com/2n3904-npn-general-propose-transistor.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/5/5a517fc05a010c97af4f73351ec0086cc5dc4ac0.jpeg) `Quantity: 7` * * * # 10 PIN BOX HEADER CONNECTOR 2.54MM 2\*5PIN [https://www.taydaelectronics.com/10-pin-box-header-connector-2-54mm.html](https://www.taydaelectronics.com/10-pin-box-header-connector-2-54mm.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/3/32fdd5f996d50aabe1633ff2a7834f51acb2fb99.jpeg) `Quantity: 1` * * * # LM7805 L7805 7805 VOLTAGE REGULATOR IC 5V 1.5A [https://www.taydaelectronics.com/lm7805-l7805-7805-voltage-regulator-ic-5v-1-5a.html](https://www.taydaelectronics.com/lm7805-l7805-7805-voltage-regulator-ic-5v-1-5a.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/a658e1775eef982970074323d81eadc27175c635.jpeg) `Quantity: 1` * * * # TL074 QUAD OPERATIONAL AMPLIFIER J-FET PDIP-14 TL074CN [https://www.taydaelectronics.com/tl074-quad-operational-amplifier-j-fet-pdip-14-tl074cn.html](https://www.taydaelectronics.com/tl074-quad-operational-amplifier-j-fet-pdip-14-tl074cn.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/4/4984b1eebbd8ddb1f735f2b7bef5b19a9a2e6cf9.jpeg) `Quantity: 1` # 14 PIN DIP IC SOCKET ADAPTOR SOLDER TYPE [https://www.taydaelectronics.com/14-pin-dip-ic-socket-adaptor-solder-type.html](https://www.taydaelectronics.com/14-pin-dip-ic-socket-adaptor-solder-type.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/b/b3b84a2bd0358ebffa203efdf856bb52a5bfd6af.jpeg) `Quantity: 1` * * * # PT2399 2399 ECHO AUDIO PROCESSOR GUITAR IC [https://www.taydaelectronics.com/pt2399-2399-echo-audio-processor-guitar-ic.html](https://www.taydaelectronics.com/pt2399-2399-echo-audio-processor-guitar-ic.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/d/d99a0b7b3d9867a903cf1aef3baf0ed557392ed0.jpeg) `Quantity: 3` # 16 PIN DIP IC SOCKET ADAPTOR SOLDER TYPE [https://www.taydaelectronics.com/16-pin-dip-ic-socket-adaptor-solder-type.html](https://www.taydaelectronics.com/16-pin-dip-ic-socket-adaptor-solder-type.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/c/c2c312775b7e38c15f1ce449330ab8d5f10755fd.jpeg) `Quantity: 3` * * * # MINI TOGGLE SWITCH DPDT ON-ON [https://www.taydaelectronics.com/mini-toggle-switch-dpdt-on-on.html](https://www.taydaelectronics.com/mini-toggle-switch-dpdt-on-on.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/4/4b539c9c89fc69d9187b22fcf5317a2d3e4b02b4.jpeg) `Quantity: 2` * * * # 100K OHM LINEAR TAPER POTENTIOMETER ROUND SHAFT PCB 9MM [https://www.taydaelectronics.com/100k-ohm-linear-taper-potentiometer-round-shaft-pcb-9mm.html](https://www.taydaelectronics.com/100k-ohm-linear-taper-potentiometer-round-shaft-pcb-9mm.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/7/725431a686d8c10f2379a2df8dbe94f638d5dcd1.jpeg) `Quantity: 10` # BTW folks, Tayda has [9] of these Pots left in stock. They usually go out quick. Not the only place to get them, but for me at least its the easiest. -edit- as these are already in short supply, here is a link to the thread for this part specifically. > [@Can't find Pots](https://lookmumnocomputer.discourse.group/t/cant-find-pots/695): > > Got the circuit boards and electric druid chip in the post, very cool thanks. Looking at the bill of materials, RV1-9 and RV8 have links to [thonk.co.uk](http://thonk.co.uk) but when I look there, can’t find the RK09K nor Bourns 3296 Potentiometer\_Alps\_RK09K\_Single\_Vertical1LEVEL 100k [https://www.thonk.co.uk/shop/alpha-9mm-pots/35RV8Potentiometer\_Bourns\_3296W\_Vertical](https://www.thonk.co.uk/shop/alpha-9mm-pots/35RV8Potentiometer_Bourns_3296W_Vertical) Got the datasheets on them? I’m hoping suntan do some compatible clones. As well as links to the suppliers mentioned int hat thread for reference: - [Alpha 9mm Pots – Vertical – Thonk – DIY Synthesizer Kits & Components](https://www.thonk.co.uk/shop/alpha-9mm-pots/) - [https://www.amplifiedparts.com/products/potentiometer-alpha-linear-9mm-vertical](https://www.amplifiedparts.com/products/potentiometer-alpha-linear-9mm-vertical) - [https://modularaddict.com/9mm-potentiometers](https://modularaddict.com/9mm-potentiometers) * * * # SAVE TIME EASY ORDERING PAGE FOR 1/4W 1% RESISTORS [https://www.taydaelectronics.com/test-group-2-2762.html](https://www.taydaelectronics.com/test-group-2-2762.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/7/7a92fe1bddcf113bf035283a14eb1c76770a527d.jpeg) Need: ```auto Type | Quantity * 100k - 11 * 1k - 14 * 15k - 9 * 30k - 1 * 24k - 1 * 47k - 1 * 10k - 12 * 4k7 / 4.7k - 2 * 10R - 2 ``` * * * # 40 PIN 2.54MM SINGLE ROW PIN HEADER STRIP (cut to size) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/7/7c5841335c207987bd46172acf3107aa232ad42c.jpeg) [https://www.taydaelectronics.com/40-pin-2-54-mm-single-row-pin-header-strip.html](https://www.taydaelectronics.com/40-pin-2-54-mm-single-row-pin-header-strip.html) `Quantity: 1` * * * # LED 5MM `Quantity: Pick 5 from below:` ## Yellow [https://www.taydaelectronics.com/led-5mm-yellow.html](https://www.taydaelectronics.com/led-5mm-yellow.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/0/0c94915777503d244dac12d480a7446d1a2d1bcb.jpeg) ## Red [https://www.taydaelectronics.com/led-5mm-red.html](https://www.taydaelectronics.com/led-5mm-red.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/1077d185783e425efa30a32d9ac1cdd2ad9fea94.jpeg) ## Green [https://www.taydaelectronics.com/led-5mm-green.html](https://www.taydaelectronics.com/led-5mm-green.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/0/009b019bfc2046db3a2e3746960e8cede28f9164.jpeg) ## Blue [https://www.taydaelectronics.com/leds/round-leds/5mm-leds/blue/led-5mm-blue-lens.html](https://www.taydaelectronics.com/leds/round-leds/5mm-leds/blue/led-5mm-blue-lens.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/4/40d2c289f6293a58529b7f095a0b1d667c408aaa.jpeg) * * * # SAVE TIME EASY ORDERING PAGE FOR CERAMIC DISC CAPACITORS [https://www.taydaelectronics.com/test-group-2.html](https://www.taydaelectronics.com/test-group-2.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/a/addbf434c1fdf27900ac4c54a29f9ce1787773ac.jpeg) Need: ```auto Type | Quantity * 100nf - 16 * 2.2nf - 3 * 470pf - 6 ``` * * * # ELECTROLYTIC CAPACITORS ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/3/3d695f2473fe947dcda36ff4b5147ec3933b4c28.jpeg) ## 10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM [https://www.taydaelectronics.com/10uf-50v-105c-radial-electrolytic-capacitor-5x11mm.html](https://www.taydaelectronics.com/10uf-50v-105c-radial-electrolytic-capacitor-5x11mm.html) `Quantity: 7` ## 4.7UF 16V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM [https://www.taydaelectronics.com/4-7uf-16v-105c-radial-electrolytic-capacitor-5x11mm.html](https://www.taydaelectronics.com/4-7uf-16v-105c-radial-electrolytic-capacitor-5x11mm.html) `Quantity: 4` ## 47UF 50V 105C ALUMINUM ELECTROLYTIC CAPACITOR 6.3X11.2MM PANASONIC [https://www.taydaelectronics.com/47uf-50v-105c-aluminum-radial-electrolytic-capacitor-nhg.html](https://www.taydaelectronics.com/47uf-50v-105c-aluminum-radial-electrolytic-capacitor-nhg.html) `Quantity: 1` * * * # 6.35MM 1/4" STEREO PHONE JACK [https://www.taydaelectronics.com/6-35mm-1-4-stereo-phone-jack.html](https://www.taydaelectronics.com/6-35mm-1-4-stereo-phone-jack.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/f/f7fc3c587003af29c3841b3f0c6d5a0621ab67f9.jpeg) `Quantity: 3` * * * # Knobs: `Small Quantity: 9, Big Quantity: 1` (Pick your poison, keeping in mind the shaft diameter should be 6.35mm) Sam says to get big bigs and some smalls too. [https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs.html?p=1](https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs.html?p=1) Here are some of my picks: ## Small: `Quantity: 9` ### BOSS STYLE BLACK KNOB 20X12MM [https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/boss-style-knob-black.html](https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/boss-style-knob-black.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/4/4d8447ba711dd893611e34cbae9033bffb034243.jpeg) ### ALUMINUM KNOB 24MM [https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/aluminum-knob.html](https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/aluminum-knob.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/2/2c22789a4b6af269410a7fb5c3da1796c6c1bc00.jpeg) ### ALUMINUM KNOB 24MM [https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/aluminum-knob-3191.html](https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/aluminum-knob-3191.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/9/9f58b891f206587f16e687d539b881d53c33c7f0.jpeg) ## BIG BIGS: `Quantity: 1` ### BOSS STYLE SILVER TOP BLACK KNOB 33MM [https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/boss-style-silver-top-black-knob-33mm.html](https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/boss-style-silver-top-black-knob-33mm.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/4/4bf19aa5b5d4ccd6934f457b8de99f2aae7eaa2f.jpeg) # ALUMINUM KNOB 37MM [https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/34417-dup-aluminum-knob.html](https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/34417-dup-aluminum-knob.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/7/7f14d8fbad927e7416f306b9d04d0883950b0c4a.jpeg) # ALUMINUM KNOB 37MM [https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/39133-dup-aluminum-knob.html](https://www.taydaelectronics.com/potentiometer-variable-resistors/knobs/39133-dup-aluminum-knob.html) ![](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/1a8a64eaa02e4e86fb5578b4180026bd1e9558e1.jpeg) ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [May 14, 2020, 4:49pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/11 "2020-05-14T16:49:32Z")
Is there really an R36? It’s 24k in the BOM but I don’t see it on the schematic. ---
**Author:** ![KardashevTypeII](https://avatars.discourse-cdn.com/v4/letter/k/43a26b/32.png) [@KardashevTypeII](https://lookmumnocomputer.discourse.group/u/KardashevTypeII)\ **Post date:** [May 14, 2020, 4:59pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/12 "2020-05-14T16:59:32Z")
This is turning out nice! -Fumu / Esopus ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 5:04pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/13 "2020-05-14T17:04:24Z")
check out the leg of rv4. its basically just a resistor that sort of makes it all a bit more manageable at the bottom end of the knob twist, I found too small the pt2399 crashed and turned off in too much of the knob travel. too high you dont get the full selection of garbage mode ---
**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\ **Post date:** [May 14, 2020, 5:25pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/14 "2020-05-14T17:25:12Z")
Ah, way down there! Felt like I was playing Where’s Waldo. I don’t have any 24k at the moment but looks pretty noncritical, if I don’t get any by the time I’m building this I’ll probably use a 22k or 22k+2.2k if need be. ---
**Author:** ![fredrik](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/fredrik/32/682_2.png) [@fredrik](https://lookmumnocomputer.discourse.group/u/fredrik)\ **Post date:** [May 14, 2020, 5:47pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/15 "2020-05-14T17:47:43Z")
> [@analogoutput](#): > > I’ll probably use a 22k or 22k+2.2k You’ve figured out some good replacements already, but this calculator can be useful for people in this situation: > **[Series/Parallel Approximator - North Coast Synthesis Ltd.](https://files.northcoastsynthesis.com/spcalc/)** > > A reverse calculator that finds series and parallel component combinations for a desired target value. (the parallel variants it produces are often more interesting – often easier to solder, but harder to calculate in your head. E.g. in this case 47k//47k (pretty obvious) and 100k//33k (less so) would work fine.) ---
**Author:** ![twinturbo](https://avatars.discourse-cdn.com/v4/letter/t/8baadc/32.png) [@twinturbo](https://lookmumnocomputer.discourse.group/u/twinturbo)\ **Post date:** [May 14, 2020, 5:56pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/16 "2020-05-14T17:56:06Z")
> **[2399 TRIPLE SPLASHBACK DELAY](https://store.lookmumnocomputer.com/collections/all/products/2399-triple-splashback-delay)** > > This product will be ready to ship by the end of the week! This is the PCB and Panel to build the #2399 TRIPLE SPLASHBACK DELAY. A module designed around 3 PT2399 Chips in a rather funky configuration to make anything from a tight echo near chorus,... Its UP ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 6:00pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/17 "2020-05-14T18:00:49Z")
I think just the 22k will be fine! I was humming and aaahing over values all over this module. seems the effect is very much down to taste. so I dont think much of it needs to be bang on the quoted values ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 6:01pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/18 "2020-05-14T18:01:19Z")
ooooh very nice. ill be bookmarking that link. ---
**Author:** ![ChristianBloch](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/christianbloch/32/56_2.png) [@ChristianBloch](https://lookmumnocomputer.discourse.group/u/ChristianBloch)\ **Post date:** [May 14, 2020, 6:17pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/19 "2020-05-14T18:17:10Z")
> [@lookmumnocomputer](#): > > so im putting together a pcb that is small enough to fit behind all modules That is excellent news! I have nine PT2399 so I’ll probably build at least one for Kosmo and one for Eurorack 😊 ---
**Author:** ![lookmumnocomputer](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/lookmumnocomputer/32/23_2.png) [@lookmumnocomputer](https://lookmumnocomputer.discourse.group/u/lookmumnocomputer)\ **Post date:** [May 14, 2020, 8:38pm UTC](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879/20 "2020-05-14T20:38:21Z")
hey it looks about right! except for the LED bezel, thats not needed. 🙂 [Next page](https://lookmumnocomputer.discourse.group/t/2399-triple-splashback-delay/879.md?page=2)