GuitarPCB | Cybercow | Activity https://guitarpcb.com/members/cybercow/activity/ Activity feed for Cybercow. Tue, 21 Apr 2026 06:04:18 -0400 https://buddypress.org/?v= en-US 30 hourly 2 0f7ecc6e77c1759e4f7a7e28f080cc92 Cybercow replied to the topic Mini-Me Chorus not affecting (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/mini-me-chorus-not-affecting/page/2/#post-34826 Sun, 19 Jan 2025 15:58:50 -0500 Once you voltages are corrected, you’ll want to focus on that internal trimpot. The sweet spot for that trimpot is a very narrow and us=ually somewhere around 11:00 on the dial. Move it in tiny increments while testing for the effect.

]]> 0 07a317eb4b978380e61c204dbed45d72 Cybercow replied to the topic Where is the Moderator "wilkie1"/ Did he run away? in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/where-is-the-moderator-wilkie1-did-he-run-away/#post-32118 Thu, 02 May 2024 19:46:20 -0400 Kudos on the new location Wilkie! Runaway Bay looks like a very nice area.

]]> 0 0aaa6c28e0f1dd7f66eb2b066b861279 Cybercow replied to the topic Paramix Build: No signal, no led in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-build-no-signal-no-led/#post-31988 Sat, 20 Apr 2024 20:39:53 -0400 4.5V (VB) at the junction of R13 & R14.

 

]]> 0 d2b344d61008a7145375c64288c51e61 Cybercow replied to the topic Paramix Build: No signal, no led in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-build-no-signal-no-led/#post-31973 Thu, 18 Apr 2024 23:18:22 -0400 As Barry pointed out, I’d start with a solder re-flow session. Then, fire it up and test for +9V at pin 11 of the IC and 4.5V (VB) at the junction of R13 & R14.

If the voltages are correct and the unit is still not functioning, start a ‘signal trace’ and/or continuity testing session and follow the schematic to see what might be wrong in that…Read more

]]> 0 a7f6902b457ce4f5a075141712fb9bcc Cybercow replied to the topic Mini-Me 125B in the forum Show Off Your Build https://guitarpcb.com/community/topic/mini-me-125b/#post-31777 Tue, 02 Apr 2024 21:17:58 -0400 With careful planning, measuring and drilling, the Mini-Me, even with Wilkie1’s mods, can be mounted into a 1590B enclosure with all top-mounted jacks . . . .

]]> 0 0e179970d250478ff613e4ff928053c5 Cybercow replied to the topic Mini-Me Chorus with 2 Sets of pots as presets? in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/mini-me-chorus-with-2-sets-of-pots-as-presets/#post-31776 Tue, 02 Apr 2024 21:14:31 -0400 The Mini-Me’s Rate pot is like Anderton’s version A and the Mini-Me’s Depth pot is like Anderton’s version B.

Note that the Rate pot does NOT share a ground connection. So be mindful of the wiring.

]]> 0 a76de3ab519e80f1cb80c3b2d7c5fdc9 Cybercow replied to the topic designing better-looking pedals in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/designing-better-looking-pedals/#post-31271 Sun, 25 Feb 2024 05:18:09 -0500 I use Photoshop to work up my artwork over drill templates. From there, I either do up a waterslide or have then enclosure professionally drilled and painted at a fab house (AmplifyFun) in Portland. Here’s a prototype Stereo/Dual Chorus done up in waterslide and clear coat. Inside are two highly modified Mini-Me chorus circuits.

]]> 0 aabc7c34a2b157e037725d4d76825a62 Cybercow replied to the topic The Vibe Issue in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/the-vibe-issue/#post-30991 Wed, 31 Jan 2024 01:27:53 -0500 After ensuring both grounds are properly connected, if it still doesn’t work, please proved more detailed info and some good clear photos of both sides of the PCB and all the wiring.

]]> 0 d64acba44a51af98f8e2ce66ff713486 Cybercow replied to the topic Welcome! in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/moved-reply-to-welcome/#post-30990 Wed, 31 Jan 2024 01:23:19 -0500 Del – welcome to the group!

I recently procured a Hantek 2D42 Handheld Oscilloscope 40MHz Waveform Generator Multimeter 3 in 1 Multifunction Tester, replacing my DMM, sig gen, and bench scope. Got it on Amazon for under a 150 zorkmids. Haven’t looked back.

]]> 0 82f0fd780997a2885c1197c5147403ac Cybercow replied to the topic Paramix Expression mod? in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-expression-mod/#post-30989 Wed, 31 Jan 2024 01:18:45 -0500 theurbaner – yes, one could use a long-shafted dual-gang A100K pot on an expression pedal to simultaneously control the “WET” and “DRY” controls. Just need to be sure to wire one of gangs reversed from the other so one goes up while the other goes down.

In addition, R12 could also be replaced with an A100K pot to act as a master volume.

]]> 0 f806e39bfa438a73e6fd9602c65a3637 Cybercow replied to the topic The "Mini-Minion" Chorus :D in the forum Show Off Your Build https://guitarpcb.com/community/topic/the-mini-minion-chorus-%f0%9f%92%9b/#post-30203 Mon, 27 Nov 2023 17:13:40 -0500 As a Minions fan, I find that very cool & cute. Nice work.

]]> 0 4a823d5984671232df066e6a67a9e6b8 Cybercow replied to the topic Need help with Roto-Tone Deluxe in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/need-help-with-roto-tone-deluxe/#post-30202 Mon, 27 Nov 2023 17:12:25 -0500 No idea what a “Cody switch” is. Can you please clarify?

And the Roto-Tone Deluxe does not support 8 device options – only 4.

We need more information on what you’re chasing.

]]> 0 0c6b92c5caf5c178e734a108111bb434 Cybercow replied to the topic Transistor testing in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/transistor-testing/#post-29750 Sun, 10 Sep 2023 20:20:14 -0400 Those cheap Chinese testers don’t do JFETs well at all. The symmetrical nature of JFETs confuse them. As Barry points out, a Peak Atlas DCA75 is far more accurate and reliable. And even then the symmetrical nature of JFETs can confuse a DCA75.

]]> 0 9330efbe4765451ed467c511652fc677 Cybercow replied to the topic Mini-Me and Xvive MN3007 in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/mini-me-and-xvive-mn3007/#post-29300 Sat, 22 Jul 2023 15:37:44 -0400 I’ve used all the variants possible with the Mini-Me build. MN3007, MN3207, XVive MN3007 and even the NTE1641 (MN3007 eq) all work fine. There is a bit difference in how the chorus sounds with the NTE1641 – it tends to sound a bit more brittle as far as chorus goes.

]]> 0 9eef9e86fe04496da84f377c9ea45272 Cybercow replied to the topic Chorus, Choruses & Chorus in the forum Show Off Your Build https://guitarpcb.com/community/topic/chorus-choruses-chorus/page/2/#post-29268 Thu, 20 Jul 2023 03:30:34 -0400 Ken – here ya go . . .

]]> 0 6c3beb8f0314b57f864f7b3ffbd9ddd1 Cybercow replied to the topic tube screaming ultra problem (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/tube-screaming-ultra-problem/#post-29101 Mon, 03 Jul 2023 03:30:10 -0400 Barry – I’m pretty sure the orientation of the LEDs is not a signal killing issue. Whether they are backwards or both oriented identically, the signal should still pass – albeit somewhat horrible if both are oriented the say way. They form one of the clipping options and even if they are oriented wrong, at worst, they would be performing in an…Read more

]]> 0 6b166e147298a9dd102d16c8315f097e Cybercow replied to the topic Ratt Deluxe success in the forum Show Off Your Build https://guitarpcb.com/community/topic/ratt-deluxe-success/#post-29036 Sat, 24 Jun 2023 14:57:14 -0400 Welcome back to the community. And congratulations on the Rat.

As far as not building pedals to save money goes, that’s pretty much what got me re-started in pedals & electronics. I didn’t want to pay the exorbitant prices just to hear how a certain effect would work & sound in my rig. So far, I’m only about $3300 in the hole.

And using existing…Read more

]]> 0 2553956408dd13f491a6b99a827f19e3 Cybercow replied to the topic Bass OD v2 troubleshooting in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/bass-od-v2-troubleshooting/#post-29010 Wed, 21 Jun 2023 18:41:56 -0400 Can’t tell where all the wires are going from the photo. And what is that connected to the “D1” point on the 3PDT PCB?

A fresh photo of things after the wiring correction was made would be helpful too.

]]> 0 2afd08ea1cb1f5e4bd2540f70678bf58 Cybercow replied to the topic 4Track Fuzz issue in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/4track-fuzz-issue/#post-28981 Sat, 17 Jun 2023 20:43:56 -0400 The bypass indicator LED will not have ny bearing on the “sound”.

No idea what kinda “swirling” sound you’ve got, but all fuzzes are going to have some level of a raised noise floor. That’s a given. Can you post an audio or video clip of that sound?

]]> 0 d794c3a24e04e7a43965900b70da35c4 Cybercow replied to the topic Muff'n, Green Russian, why do I have low frequency noise in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/muffn-green-russian-why-do-i-have-low-frequency-noise/#post-28980 Sat, 17 Jun 2023 20:40:58 -0400 The first thing I see worth questioning is the orientation of the BJTs. What BJTs are you using?

I’m unable to make out any of the wiring due to the spaghetti bowl you’ve got there. :O

But is the input jack tip going directly to the main board input? Double-check the tp/sleeve of the jacks too. Again, the spaghetti makes the wiring difficult to follow.

]]> 0 eab7afd532819f73d882626ce2990cc3 Cybercow replied to the topic Paramix Won’t Power Up in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-wont-power-up/page/2/#post-28961 Fri, 16 Jun 2023 00:35:36 -0400 Done? Out? With what are you done? And of what are you out? How do you mean?

Have you considered using your DMM to work out what is connected to what? Barry showed you how to use it. Have you done that?

]]> 0 0df9b296d7f0922e8703b7ec49736fd9 Cybercow replied to the topic Tube Screaming Ultra in the forum Show Off Your Build https://guitarpcb.com/community/topic/tube-screaming-ultra-3/#post-28894 Fri, 09 Jun 2023 23:01:41 -0400 Very nice work!

]]> 0 aff37dff7812d9207b4e1ccb3dc31eb2 Cybercow replied to the topic SS-2 with Afterblaster and clipping options in the forum Show Off Your Build https://guitarpcb.com/community/topic/ss-2-with-afterblaster-and-clipping-options/#post-28880 Fri, 09 Jun 2023 00:54:44 -0400 Bravo! Nicely done.

]]> 0 1a729ccbd367365505007159270fef27 Cybercow replied to the topic Paramix Won’t Power Up in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-wont-power-up/#post-28851 Wed, 07 Jun 2023 14:47:52 -0400 How about R17? I notice it is NOT populated and it is one of the CLR resistors.

Also, are you using a common anode LED? A common cathode LED will NOT work.

]]> 0 e6658058f83f3a4820e70cd705b38bf8 Cybercow replied to the topic Paramix Won’t Power Up in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-wont-power-up/#post-28847 Tue, 06 Jun 2023 12:46:23 -0400 “Nuthin'”? Did you try measuring the voltage across pins #4 & #11 on the TL074? It should be very close to the power supply.

And please, keep us updated with fresh pictures as you make these changes.

]]> 0 be7c16398d08913bb6c60839c36ba514 Cybercow replied to the topic Paramix Won’t Power Up in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-wont-power-up/#post-28837 Mon, 05 Jun 2023 01:07:29 -0400 Correct. That PCB has two +9V connection points adjacent to one another. Remove the wire you have going to ground from that pair and move it to one of the provided pair GND points next to the OUT solder points.

]]> 0 58ea63faeb08b18d3f6da30a15465abd Cybercow replied to the topic Howling Shiba Deluxe Cocked Wah w/Exp in the forum Show Off Your Build https://guitarpcb.com/community/topic/howling-shiba-deluxe-cocked-wah-w-exp/#post-28830 Sun, 04 Jun 2023 05:07:17 -0400 Hella nice job on such wildly versatile looking build. So is this basically the “brains” box for which an external expression pedal is the treadle for this mondo wah circuit? Or is this an elaborate cocked wah circuit with an expression pedal option?

]]> 0 84bef72d7ab41e5f27ed955d13b2a031 Cybercow replied to the topic Paramix Won’t Power Up in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/paramix-wont-power-up/#post-28829 Sun, 04 Jun 2023 05:01:07 -0400 It looks like the two +9V pads have one red wire and one black (brown?) wire. If the red wire is the +9V and the black (brown?) wire is grounded – there’s the problem. And there is no ground wire connected to the GND pads. Where is the ground connected?

]]> 0 f50ca479d86d5b391a4e34bb9a71bf12 Cybercow replied to the topic Vibe no phase (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/vibe-volume-change-but-no-phase/#post-28820 Sat, 03 Jun 2023 15:47:03 -0400 FWIW, I like to use a multi-run trimpot for chorus, vibe and other such circuits where a single trimpot sets up action. Multi-turn trimpots are easier to dial in an effect.

Glad you sorted it. Happy building!

]]> 0 e36b2648b0aa99de686987073084f953 Cybercow replied to the topic Another New One - Illudium PU-36 Explosive Space Modulator in the forum Show Off Your Build https://guitarpcb.com/community/topic/another-new-one-illudium-pu-36-explosive-space-modulator/#post-28801 Thu, 01 Jun 2023 14:42:57 -0400 Nice! Fun graphics.

]]> 0 5f81824933412759791915a67bb2be79 Cybercow replied to the topic Vibe no phase (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/vibe-volume-change-but-no-phase/#post-28800 Thu, 01 Jun 2023 14:41:29 -0400 OK, so your PS distribution is good.

The next thing to do is connect & fire it up in a way you can access the trimpot inside, put a signal thru it with the pedal engaged. Then with the trimpot set to center, ever so delicately, slowly and in very tiny increments, turn it it to the left to see if the “vibe” starts happening. If you get all the way…Read more

]]> 0 5909be6555133884882325b9d0407fd9 Cybercow replied to the topic Vibe no phase (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/vibe-volume-change-but-no-phase/#post-28791 Wed, 31 May 2023 03:34:26 -0400 The Vb will vary depending the setting of TR1.

To measure the voltages on the ICs, you need to measure at their power supply pins.

IC1 PS pin = 7

IC2 PS pin = 4

IC3 PS pin = 7

Also, ensure the JFETs are securely seated in the sockets. If they wiggle, they’re likely not going to perform well. I like to gently wrinkle the ends of the legs so…Read more

]]> 0 9a557fbfea9513f040fc091eb4e68378 Cybercow replied to the topic Bi Color LED in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/bi-color-led/#post-28786 Tue, 30 May 2023 13:07:07 -0400 A CLR is needed only on. the board to which the LED is physically attached. And the CLR value is entirely up to the builder. The lower the CLR value, the brighter the LED will be. I use anywhere between 2K7 to 12K depending on the specific LED. Typically a 3K9 or 4K7 will do fine.

]]> 0 5fa89b4d56363c5e56d19dd0f420a272 Cybercow replied to the topic Vibe no phase (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/vibe-volume-change-but-no-phase/#post-28767 Sat, 27 May 2023 21:21:58 -0400 Some good clear & detailed photos of the build would give a better opportunity for us to better help.

Did you used a matched set of 2N5952 JFETs?

How about power supply and VB measurement values? What are those reading?

]]> 0 0e624bbe2ced7725a4666bee06438091 Cybercow replied to the topic Chorus, Choruses & Chorus in the forum Show Off Your Build https://guitarpcb.com/community/topic/chorus-choruses-chorus/page/2/#post-28618 Sun, 14 May 2023 21:39:16 -0400 mybud – I agree completely. Between Robbie and Ray, the compositional skills and note-for-note articulations are quite underrated. I was amazed to learn years ago how Ray used a Fender Bass Rhodes keyboard for the bass lines. It never occurred to me, (before learning that fact), from where the bass was coming. I assumed they simply had a hired bass player.

]]> 0 8e63d67dc5ae3b7cf7e6c7cc9f96e17f Cybercow replied to the topic Chorus, Choruses & Chorus in the forum Show Off Your Build https://guitarpcb.com/community/topic/chorus-choruses-chorus/page/2/#post-28613 Sun, 14 May 2023 19:12:58 -0400 mybud – thank you for the kind words.

And yes, you’re right. The first chord progression is from “You’re Lost Little Girl” by the Doors.

]]> 0 b12c77d4ec74413731982035fea616fc Cybercow replied to the topic Chorus, Choruses & Chorus in the forum Show Off Your Build https://guitarpcb.com/community/topic/chorus-choruses-chorus/page/2/#post-28578 Wed, 10 May 2023 17:46:52 -0400 And here’s my latest rendition of the dual chorus . . . .

On this one, I added Rate LED indicators. I sunk them just below the surface of the waterslide so they shine from beneath the waterslide. I like the white enclosure and blue theme labeling better than the purple.

]]> 0 846efc843a36698a4d2a21126f19e885 Cybercow replied to the topic Chorus, Choruses & Chorus in the forum Show Off Your Build https://guitarpcb.com/community/topic/chorus-choruses-chorus/page/2/#post-28577 Wed, 10 May 2023 17:40:27 -0400 Sure. The switch is a 4PDT On-On-On toggle switch.

]]> 0 eeeded6c94de6858126d2740bbda7860 Cybercow replied to the topic A Trio of Stage 3's in the forum Show Off Your Build https://guitarpcb.com/community/topic/a-trio-of-stage-3s/#post-28555 Tue, 09 May 2023 12:16:35 -0400 Very nice indeed!

]]> 0 828e6ecc2428662e640940166613c74e Cybercow replied to the topic Gordon Lightfoot passed away in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/gordon-lightfoot-passed-away/#post-28483 Wed, 03 May 2023 13:58:26 -0400 “And you won’t read that book again because the ending’s just too hard to take.”

RIP Gordon> And thanks for all the great tunes.

]]> 0 59dacd524b9ad23a6f9022b63fd8c5c2 Cybercow replied to the topic Angry Llama excessive output in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/agry-llama-excessive-output/?view=all#post-28256 Mon, 10 Apr 2023 20:34:18 -0400 Regardless of the R3 & R4 values, I would focus on that afterburner section with the JFET. I would argue that the 22µF cap adds a considerable boost (and dirties up the signal significantly) and could be pulled temporarily to see how the pedal performs (volume-wise). Pretty sure it will sound a bit less “dirty” with that 22µF cap removed.

I a…Read more

]]> 0 aa2c732f6669dce0f9b75ece7d2967a4 Cybercow replied to the topic dlay V3 Warmoth Fanatic not working in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/dlay-v3-warmoth-fanatic-not-working/#post-28155 Sat, 01 Apr 2023 22:07:06 -0400 If TR1 is already set to it’s minimum position, the WF mod will have no effect. Have you adjusted TR1 for a correct setting of “near-infinite-repeats when the Repeats pot is set to max?

]]> 0 439ce16790d44c72159428a66e79d75d Cybercow replied to the topic dlay V3 Warmoth Fanatic not working in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/dlay-v3-warmoth-fanatic-not-working/#post-28143 Fri, 31 Mar 2023 01:37:27 -0400 The WF mod should only need two wires to facilitate. The added stomp should be a normally-open, momentary-on type.

What is the resistor value installed for “R-A”?

If TR1 is already set to it’s minimum position, the WF mod will have no effect. Have you adjusted TR1 for a correct setting of “near-infinite-repeats when the Repeats pot is set to max?

]]> 0 5459bf8310774a77454fd001f8e41070 Cybercow replied to the topic Anxiety Disorder Drive - Sound Dies (solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/anxiety-disorder-drive-sound-dies-out/#post-28109 Tue, 28 Mar 2023 20:50:08 -0400 The 2N7000 devices are just for hard clipping. The circuit will work with or without them. It will simply be louder and cleaner without the 2N7000s. D1 is just part of the hard clipping configuration to provide asymmetric clipping. Just make sure it’s oriented properly. If it’s not, it just won’t clip right, but the signal should not be dying out…Read more

]]> 0 e3da3380ece13b880c374cbce6187385 Cybercow replied to the topic dlay V3 Warmoth Fanatic not working in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/dlay-v3-warmoth-fanatic-not-working/#post-28107 Tue, 28 Mar 2023 20:30:08 -0400 Photos of your build please?

]]> 0 9d3159254963f39d223721ffab0e92f4 Cybercow replied to the topic I need help with Fuzzy Bee troubleshooting in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/i-need-help-with-fuzzy-bee-troubleshooting/#post-27793 Fri, 24 Feb 2023 00:54:07 -0500 If those are germanium BJTs, the leakage must be very close to zero in order for voltage measured biasing to work well. Most Ge BJTs have some leakage to them and the Burns Buzz Around fuzz circuit needs Q2 to have some leakage to get “that sound”. I’ve built a few of these circuits and always got the best results when the gain of each BJT is…Read more

]]> 0 48a6b7d04a9d9cdc3272036f846a5f2d Cybercow replied to the topic Ratt Deluxe Strange Sound (Solved) in the forum GuitarPCB Build Support https://guitarpcb.com/community/topic/ratt-deluxe-strange-sound/#post-27790 Fri, 24 Feb 2023 00:20:54 -0500 Please go back re-read the build document carefully. If you follow that doc to the letter, you will find success. Using a TL071 instead of an LM308 or OP07 is the first error. The second issue is that R7 AND the trimpot are in place. (Again, that bit is in the build doc.)

And please double & triple-check ALL the grounds.

]]> 0 0197c805b25f0e975940f02199f55892 Cybercow replied to the topic Not pedal related but pertinent in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/not-pedal-related-but-still-pertinent-to-the-community/#post-27650 Sat, 11 Feb 2023 15:09:36 -0500 Looking good Barry. Glad to learn things health wise are turning around for you. Thanks for the update.

]]> 0 25189b97a7b37ae56c5fada92a658993 Cybercow replied to the topic El Scorcho Mucho and EmeXaR Ultra ... in the forum Show Off Your Build https://guitarpcb.com/community/topic/el-scorcho-mucho-and-emexar-ultra-offerings/#post-26433 Sun, 09 Oct 2022 15:48:17 -0400 Wow! Both pedals are well done and look great! Excellentamundo!

]]> 0 872dc53e3d5c5751997859c0cdcd685e Cybercow replied to the topic 9v to 18v On A Switch? in the forum General DIY Pedal Discussion https://guitarpcb.com/community/topic/9v-to-18v-on-a-switch/#post-26432 Sun, 09 Oct 2022 13:08:37 -0400 If all the grounds involved are common, there is no need to switch the ground wires and a SPDT On-On toggle would do fine.

And whether SPDT or DPDT, anticipate a “pop” when switching the voltage.

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