4pdt applications

[Philippe]

what is a 4pdt stompswitch used for? I am well-acquainted with a 3pdt for true-bypass, circuit on, & LED but have no idea what the extra switching capacity of a 4pdt can be used for...chalk it up to my simplistic diy thought processes! 

[LaceSensor]

stereo bypass is one application...

[SISKO]

Effect order switcher http://www.beavisaudio.com/projects/Looper-Switcher/index.htm

[alanp]

The 1.3 version of the String Ringer uses a 4PDT to turn off some parts of the circuit while bypassed, to reduce noise. IIRC.

[digi2t]

The 1.3 version of the String Ringer uses a 4PDT to turn off some parts of the circuit while bypassed, to reduce noise. IIRC.

That`s correct. To eliminate octave and LFO bleed into the bypassed signal, a 4PDT was necessary.

[DIMstompboxes]

Hi everybody, timing for my plan using this 4pdt
Eventually, I'm going to rehouse my clone Ross compressor in much bigger case. I'm planning to have the Ross compressor with 2(two) output (output A and output B) so I can route my guitar signal to my analog OR multiFX if this is possible and have no issue. Although making a separate a/b/y box is most ideal but thinking later to build this one separately for general use.
Here's my plan:

          > Ross (engage ON) > output A > analog pedal chain > amp mic'ed > mixing desk FRFR
Guitar
          > Ross(bypass OFF) > output B > multiFX  > DI > mixing desk FRFR

Can you help me guys on the diagram for 4pdt. 
Thanks in advance.

[GGBB]

Hi everybody, timing for my plan using this 4pdt
Eventually, I'm going to rehouse my clone Ross compressor in much bigger case. I'm planning to have the Ross compressor with 2(two) output (output A and output B) so I can route my guitar signal to my analog OR multiFX if this is possible and have no issue. Although making a separate a/b/y box is most ideal but thinking later to build this one separately for general use.
Here's my plan:

         > Ross (engage ON) > output A > analog pedal chain > amp mic'ed > mixing desk FRFR
Guitar
         > Ross(bypass OFF) > output B > multiFX  > DI > mixing desk FRFR

Can you help me guys on the diagram for 4pdt.  
Thanks in advance.

You only need a 3PDT to do this:

OUT-A     PCB-IN     NONE

  IN          GND      OUT-B

PCB-IN      LED-     PCB OUT

But you should ground the unused outputs, so you will really need a 4PDT:

LEDA-    OUT-A   PCB-IN     GND

GND         IN       GND      OUT-B

OUT-A    PCB-IN   LEDB-    PCB OUT

[Mark Hammer]

Some people use 4PDT to change the capacitor values on a 4-stage phaser to turn it into a Uni-Vibe-like effect, and I imagine that other folks use them to select between preset pots.

[DIMstompboxes]

Hi everybody, timing for my plan using this 4pdt
Eventually, I'm going to rehouse my clone Ross compressor in much bigger case. I'm planning to have the Ross compressor with 2(two) output (output A and output B) so I can route my guitar signal to my analog OR multiFX if this is possible and have no issue. Although making a separate a/b/y box is most ideal but thinking later to build this one separately for general use.
Here's my plan:

         > Ross (engage ON) > output A > analog pedal chain > amp mic'ed > mixing desk FRFR
Guitar
         > Ross(bypass OFF) > output B > multiFX  > DI > mixing desk FRFR

Can you help me guys on the diagram for 4pdt.  
Thanks in advance.

You only need a 3PDT to do this:

OUT-A     PCB-IN     NONE

  IN          GND      OUT-B

PCB-IN      LED-     PCB OUT

But you should ground the unused outputs, so you will really need a 4PDT:

LEDA-    OUT-A   PCB-IN     GND

GND         IN       GND      OUT-B

OUT-A    PCB-IN   LEDB-    PCB OUT

Hi GGBB,
Thank you so much mate, just to clear up. LED B is the Ross ENGAGE mode going to my analog chain and LED A is Ross BYPASS mode route to my multiFX as I'm going to use the multiFX built-in compressor. I owe you one my friend   

[GGBB]

Hi GGBB,
Thank you so much mate, just to clear up. LED B is the Ross ENGAGE mode going to my analog chain and LED A is Ross BYPASS mode route to my multiFX as I'm going to use the multiFX built-in compressor. I owe you one my friend   

I think I mixed the names up a bit - I got confused between "engage ON" and "bypass OFF" - but it doesn't matter - you can change the names:

LED A indicates Output A on and the circuit bypassed.
LED B indicates Output B on and the circuit active.

[DIMstompboxes]

Hi GGBB,
Thank you so much mate, just to clear up. LED B is the Ross ENGAGE mode going to my analog chain and LED A is Ross BYPASS mode route to my multiFX as I'm going to use the multiFX built-in compressor. I owe you one my friend   

I think I mixed the names up a bit - I got confused between "engage ON" and "bypass OFF" - but it doesn't matter - you can change the names:

LED A indicates Output A on and the circuit bypassed.
LED B indicates Output B on and the circuit active.

Hi GGBB, its okey in anyway  Again thank you so much my friend.