Help I want to build a simple AB box

[jallenfuzz]

I want to build an AB box with a volume control for each channel.  Anyone have a schematic for this? Could someone point me in the right direction? Can I do it without a circuit board?

[gcme93]

Try that

Mostly thanks to Beavis Audio, and microsoft paint

EDIT: Audio taper pots would probably be better for this application, but linear ones will work fine too

[petemoore]

  I'm sure there are diagrams/schemtatics available for exactly that.
 If not, put the volume control in...
 It 'can' be as simple as 1 SPDT + 3 jacks with grounded sleeves, the pole to the input, 1 throw wired to 'output jack A tip', the other throw to output jack B tip.
 

[gcme93]

 I'm sure there are diagrams/schemtatics available for exactly that.
 If not, put the volume control in...
 It 'can' be as simple as 1 SPDT + 3 jacks with grounded sleeves, the pole to the input, 1 throw wired to 'output jack A tip', the other throw to output jack B tip.
 

Very true. I just remembered Beavis's one and edited it. Do you think he uses a DPDT because they're more common for stompswitches? Or does switching the grounds give some added benefit?

[jallenfuzz]

Ok, now I'm thinking more about the project and I realized a few things.  I would like to use two switches.  One to switch channels and the other to select both or none. Also LEDs would be good.  Any more insight? I can install power via battery and add a DC jack.  I'm new to building from scratch so I'm not sure how to go about the circuit. Any help greatly appreciated.

[Rigel]

If you wont ground the unused output, the amplifier will buzz. For LEDs use a 3DPT

[EATyourGuitar]

http://www.diystompboxes.com/smfforum/index.php?topic=91718.0

[caspercody]

http://www.singlecoil.com/frmset.html

There are (2) good PDF files on this page that talk about AB boxes.

[petemoore]

  Features Vs. Extras...
  That one shows two volume pots.
  There are so many for instaces with these A/B boxes...here's a couple option comments
  Perhaps one side is continually louder than the other, and there's a master volume, one VC in the box would provide A/B volume balance, + the master volume gives control on the volumes.
  Perhaps there will be a volume control in series with each volume control shown in above schematic [such as when connecting to guitar outputs and many effects outputs].
  The VC's could be important and useful, or redundant, depending on what the applications are.