Build Your Own Clone Message Board

It is currently Fri Mar 29, 2024 5:19 am

All times are UTC - 6 hours




Post new topic Reply to topic  [ 7 posts ] 
Author Message
PostPosted: Mon Mar 20, 2017 1:28 am 
Offline

Joined: Tue Jul 19, 2016 10:58 pm
Posts: 94
So my band is recording and our setup is...unconventional. We use either headphones or our PA to listen back to our takes. Well its getting annoying having to unplug the headphones and then plug into the PA mixer. So Ive got these mini pedal enclosures that ended up being too small to use for anything and I figured I could use them to make some A/B switchers but I had no use for one, until now. Problem is I need to build one that works in stereo. It would use 1/4" jacks. Can someone please show me a wiring diagram to build one? It doesnt NEED to have an LED indicator but itd be nice to see that in there. Thank you very much for the help.


Top
 Profile  
 
PostPosted: Tue Mar 21, 2017 12:49 pm 
Offline
Moderator
User avatar

Joined: Tue Jan 02, 2007 1:24 pm
Posts: 16196
Location: Albany, NY
Here's one from the Tonepad that I used to build a simple A-B switchbox. Worked perfectly:

http://www.tonepad.com/getFile.asp?id=107

_________________
“My favorite programming language is SOLDER” - Bob Pease (RIP)

My Website * My Musical Gear * My DIY Pedals: Pg.1 - Pg.2


Top
 Profile  
 
PostPosted: Tue Mar 21, 2017 1:04 pm 
Offline
Moderator
User avatar

Joined: Tue Feb 09, 2010 4:45 pm
Posts: 4684
Location: Rochester, NY
duhvoodooman wrote:
Here's one from the Tonepad that I used to build a simple A-B switchbox. Worked perfectly:

http://www.tonepad.com/getFile.asp?id=107

OK, help me grasp what's going on there. Why are both output jacks wired to the common row of the 3PDT? And why is the input wired to both the top and bottom row? It seems like that would make everything be connected all the time. I thought I understood these switches… :roll:

_________________
Scott

My band, Austin Hollow


Top
 Profile  
 
PostPosted: Thu Mar 23, 2017 4:57 pm 
Offline
User avatar

Joined: Wed Nov 14, 2012 9:07 pm
Posts: 792
sjaustin wrote:
OK, help me grasp what's going on there. Why are both output jacks wired to the common row of the 3PDT?

- Okay, I am still pretty much in the noob category, but I assume that its not unlike how most 3PDT switch wiring diagrams for effects pedals have you connect the board input to the ground when the effect is bypassed, to reduce noise, especially on high gain pedals. They are doing the same thing here on whichever output channel is not being used at any given time.

sjaustin wrote:
And why is the input wired to both the top and bottom row? It seems like that would make everything be connected all the time. I thought I understood these switches…

I assume that you are referring to the input tip. If so, then take another look.
When the switch is in the "up" position, the signal goes from the input jack tip to lug 1 on the switch. Its then mechanically connected to lug 2 by the switch and on to output jack A.
Yes, a jumper wire also goes go from lug 1 down to lug 6 but it goes no further, because the switch is in the "up" position, so lugs 5 and 6 are not connected at that time. Instead, lug 5 is receiving the ground from lug 4, to pass it along to output B, which is is the output not being used when the switch is in this position.

When the switch is in the "down" position, the signal still goes from the input jack to Lug 1, but now the switch is not connecting Lug 1 and lug 2. Instead, the jumper wire carries the signal to lug 6 (like before) but now the switch mechanically connects lugs 5 and 6, which sends the signal to output B.
Meanwhile lug 2 is now mechanically connected to lug 3, which is receiving ground from lug 4 via a jumper wire. So the ground goes from lug 4 to lug 3, to lug 2, again feeding a ground signal to the unused output A.

At least that is my understanding, though its entirely possible that I may be wrong! :oops:

If so, hopefully one of the gurus will ring in and straighten me out... :mrgreen:

_________________
"What you say is not enough, its what you try to do. "


Top
 Profile  
 
PostPosted: Thu Mar 23, 2017 10:12 pm 
Offline

Joined: Fri Oct 16, 2009 9:32 pm
Posts: 1397
Location: Smithers, British Columbia Canada
wouldn't a 4pdt switch be a simple solution. that would keep it 1 stereo in and 2 stereo outs or two ins and one out. no led though

_________________
Doh! Stupid Diode


Top
 Profile  
 
PostPosted: Fri Mar 24, 2017 9:44 am 
Offline
Moderator
User avatar

Joined: Tue Jan 02, 2007 1:24 pm
Posts: 16196
Location: Albany, NY
sjaustin wrote:
duhvoodooman wrote:
Here's one from the Tonepad that I used to build a simple A-B switchbox. Worked perfectly:

http://www.tonepad.com/getFile.asp?id=107

OK, help me grasp what's going on there. Why are both output jacks wired to the common row of the 3PDT? And why is the input wired to both the top and bottom row? It seems like that would make everything be connected all the time.

I assure you that it works as it's supposed to. I find that the best way for me to figure out what is really going on with these multiple pole switches is to print out two copies and then draw in the pole-throw connections for each of the two switch positions. Then it's pretty easy to trace out the current flows and see what connects to what.

Hylandren's analysis is right on the money--well done!

_________________
“My favorite programming language is SOLDER” - Bob Pease (RIP)

My Website * My Musical Gear * My DIY Pedals: Pg.1 - Pg.2


Top
 Profile  
 
PostPosted: Sat Apr 01, 2017 12:16 am 
Offline

Joined: Tue Jul 19, 2016 10:58 pm
Posts: 94
Thank you Voodoo!


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 7 posts ] 

All times are UTC - 6 hours


Who is online

Users browsing this forum: No registered users and 9 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group