DIY True Bypass FX Loop Pedal | Switches Explained
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- Опубліковано 21 вер 2024
- This video is the first in a series exploring the fundamentals and components of guitar effects.
The schematic, layout diagram and bill of material are here: i.imgur.com/YB...
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I just came across your videos...very entertaining. Can you make a video on a multi loop switcher. I have tried to build one with no success. I need five loops with master bypass switch. .Regards and keep your videos coming.
I love it! Keep up the nice work!
Hey! This is the exact thing I need. Excellent video..thank you!
Yeah yeah...we want more
beautiful video, you are very nice, congratulations! I would like to add a volume pot on the fx loop, I need to control the volume of an overdrive. Can this be done? Thank you very much
How about a 3 loop true bypass with led pedal switches with a different color for each of the 3 loops and a basic power LED so you know it's getting juice ???
Mate I love your videos, you've got a subscriber for life here! A question here, I want to add a potentiometer to the main loop (not the FX loop), so that I can even the volume out for FX pedals that have tone suck and are quieter when you activate them (I have a modulation pedal that especially on clean is noticeably quieter when you activate it). That way when the FX loop is off, the volume is turned down a bit by the potentiometer, but when you activate the FX loop, it bypasses the potentiometer and the sound with it on (provided you've tested the settings) should theoretically be able to be matched, and having a consistent volume. I'm struggling to see where to put it in the schematic as the non effects circuit is all within the 3PDT. many thanks
That should be doable :) There are at least two ways of going about it. The first is if you want a status LED. I'll explain using the layout diagram: disconnect the white wire from the switchs top right terminal and run it instead into an outer terminal of a potentiometer. Connect the middle terminal of the pot back to the top right terminal of the switch. The third terminal of the pot should be connected to ground.
This should work, but leaves the input with a lowered impedance since the pot is always connected to it and ground. I'd try using a pot with higher resistance than usual to mitigate.
If you don't want a status LED you can use the free middle terminals as a switch and avoid the impedance issue. Run the white wire from the top right terminal to the mid terminal. Run a lead from the top mid terminal to the pot. Wire up the rest as explained above.
Nice and clear video. Just subscribed
Could you build _a pedal that can _*_cancel Mono_*_ signal and _*_leave Stereo_*_ signal in?_
I'm pretty sure it is possible to come up with a switches-based solution.
I'm not looking for a -stereo to mono converter- but for a kind of "vocal remover", allthough I guess it wouldn't be 100% efficient.
At least there's a challenge😄
Hey, thank you. I'm not entirely sure I understand your question. Could you describe what signals are on the left and right channel, please? Which ones you want to keep and which to remove? This might be either very simple, or nigh on impossible with analog circuits.
@@fxinthemaking6511 Well I've seen one a long time ago but couldn't write down the design to rebuild it...
Let's say you have a song with lyrics. Well, vocals should be mainly centered, *same signal on L & R channels.* _(So would be kick, and bass too, I guess.)_
So, if we can get a way to route *what's only on L and only on R* to an output, and cancel *what's on both channels,* we'll get an instrumental track out of a song with vocals. Maybe phase should be inverted on one channel and summed with the other one, so it cancels the signal? Everything mono would proobably end up canceled actually. I'll work on that this weekend 🤗
Ah ok, phase inverting one channel and then combining both sounds about right to me. Though in this day and age I'd try to find a digital solution. Any DIYable analog cicuit would probably work less well.
@@fxinthemaking6511 I guess. It's more for the challenge, and the fun of it. Also, It could be interestind for sound experiment, to add atttenuators (potentiometer or else) on the channels, to sclup sound, but It would turn into a bigger project.
Maybe I'll finish my DIY drone synth first 🤔
Fantastic video !
love the production style and effort put into it.
also does a great job in making it beginner freindly :)
looking forward to the next episode.
also:
could you theoretically add an effect like fuzz or reverb into the bypass ?
(not sure if you can still call it a true bypass after that)
Hi Andy, yes it is totally possible to put an effect into the bypass. Though you would need to adjust the schematic a little. I would build a pedal that switches between two different loops. I'd put the input and output each onto one common terminal. The send and return of the first loop onto the upper terminals and the send and return onto the lower terminals. The downside would be, that both your effect loops could pick up stray signals (think of the cables as radio antennas) and might pop more when turned of and on.
Thanks for your encouragement!
I need this with all xlr jacks. I play harmonica and want to use a tc helicon vocal fx pedal to play distorted harp for one song with my band. I want to be able to bypass the tc helicon 95% of the time. I haven’t been able to find such a pedal.🤷♂️
I'm not quite sure about this: As XLR has two hot signals you need a 4PDT. Though you won't have an indicating LED. You would need to replicate the left and right terminals of the 3PDT twice on the 4PDT.
I made one and it’s perfect. I’m making a second and want both battery and plug power sources options. Is that as simple as I think it is?
Thank you Matt, that's awesome to hear! Using both a battery and plug power is totally doable. Though you want to make sure the battery is disconnected if no signal cables are plugged in and also disconnected if a power plug is inserted. Do the former by connecting the batteries ground to a stereo jacks ring lug. Now the battery is connected only if a mono plug is inserted. For the latter you can hook up the batteries positiv to the switched lug of the power socket, the one that's still unused. Feel free to ask if you have any questions!
And I'd love to see your build!
@@fxinthemaking6511 Thanks a ton for the info! I’ve named mine the Switcheroo and gave it a space paintjob. It works like a charm and will be hitting the stage in late Oct. Cheers man!
@@mattharmeson916 Apparently I made one of these years ago and forgot all about it, until I found it in my closet. I honestly can't remember exactly how I used it in my effects chain, but it has the effects loop, a 9V battery to light an LED for on/Off indication and some resistors and capacitors that I forget why I needed them. But it still works. I think I used it to send effects into an amp's effect loop and return from the amp's effects loop. Either way, it's a pretty easy build for those that want one and has many applications. Thanks for the reminder.