madbeanpedals::forum

General => Open Discussion => Topic started by: designatedmedia on March 04, 2012, 12:15:54 AM

Title: Question about global external tap switch and polarity...
Post by: designatedmedia on March 04, 2012, 12:15:54 AM
Hey guys,

I made this tap switch:

(http://i27.photobucket.com/albums/c167/designatedmedia/6019da64.jpg)

very basic, soft touch spst to 3 out to control my tap tempo delays that im modding up.

my problem is, after i hooked it up to my dd-20 and my dl-4 that i modded, they wont stay aligned for longer than a few seconds. I assume possibly the boss needs a polarity switch?

I cant confirm this anywhere online, so does anyone know for sure?

And if so, can i even make my tap box work and still control all my delays?
Title: Re: Question about global external tap switch and polarity...
Post by: thetrend77 on March 04, 2012, 01:25:16 PM
Yes, the Boss needs Normally Closed and the DL4 needs Normally Open. I know it's possible to make a switch for it, but I don't know how to do it, unfortunately. :(
Title: Re: Question about global external tap switch and polarity...
Post by: designatedmedia on March 04, 2012, 05:51:43 PM
Can you even add a polarity switch to a spst? Might have to be dpdt...
Title: Re: Question about global external tap switch and polarity...
Post by: REPTAR on March 05, 2012, 11:38:59 PM
Try a dpdt switch. that should work
Title: Re: Question about global external tap switch and polarity...
Post by: designatedmedia on March 07, 2012, 03:35:06 PM
how would i wire this? can anyone provide a diagram?
Title: Re: Question about global external tap switch and polarity...
Post by: REPTAR on April 03, 2012, 01:04:54 AM
You could also use a spdt switch.  One side is normally closed, while the other side of the switch is normally open.  You would need to wire one outside lug to one jack, then the other outside lug to the other jack, then the center lug to both jacks.  This way, when you press the switch, the normally open side will close, sending a change in signal to one pedal; the normally closed side will open, sending a change in signal to the other pedal.  I haven't tried this, and I don't have multiple tap-tempo pedals to test with, so I could be wrong, but it should work in theory.
Title: Re: Question about global external tap switch and polarity...
Post by: alanp on April 03, 2012, 04:58:07 AM
If all else fails, relays could be used. They normally have normally-closed, normally-open outputs, right?