Aikido output cap selector switch

cbutterworth · 3rd September 2007, 07:19 PM

On his Aikido PCB, Jim Broskie has designed pads for two stets of output caps. He suggests that this would allow for different flavours of caps, or different values of the same flavour.

These two sets of caps can be switched using a selector.

So, what kind of selector would be better - make before break, or break before make?

And....has anyone found a really classy-looking switch/knob that would work?

Thank-you in advance,

Charlie

HollowState · 3rd September 2007, 07:39 PM

I would use a make-before-break switch to help prevent any popping noises. And I prefer ceramic rotory types with "Alco" solid aluminum knobs of which there are many styles.

Classy? Too subjective. One man's class is another man's funk.

edit: I received my Aikido boards a couple of weeks ago and was impressed with their quality. My winter project.

Jeb-D. · 3rd September 2007, 11:43 PM

Another way to minimize popping when switching is to make sure each cap output has a pull down resistor, if it doesn't already on the Aikido board.

For knobs, a lot of times I go to a music store. Some stores carry a big assortment of custom knobs for guitars and basses that can work good for diy amps as well.

3rd September 2007, 07:19 PM	#1
cbutterworth diyAudio Member Join Date: Oct 2006	Aikido output cap selector switch On his Aikido PCB, Jim Broskie has designed pads for two stets of output caps. He suggests that this would allow for different flavours of caps, or different values of the same flavour. These two sets of caps can be switched using a selector. So, what kind of selector would be better - make before break, or break before make? And....has anyone found a really classy-looking switch/knob that would work? Thank-you in advance, Charlie

3rd September 2007, 07:39 PM	#2
HollowState diyAudio Member Join Date: Aug 2006 Location: Taxland, New Jersey	I would use a make-before-break switch to help prevent any popping noises. And I prefer ceramic rotory types with "Alco" solid aluminum knobs of which there are many styles. Classy? Too subjective. One man's class is another man's funk. edit: I received my Aikido boards a couple of weeks ago and was impressed with their quality. My winter project. __________________ "The supercomputer is technologically impossible. It would take all of the water that flows over Niagara Falls to cool the heat generated by the number of vacuum tubes required." ~ Professor of Electrical Engineering, New York University

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3rd September 2007, 11:43 PM	#3
Jeb-D. diyAudio Member Join Date: Nov 2005 Location: SoCal	Another way to minimize popping when switching is to make sure each cap output has a pull down resistor, if it doesn't already on the Aikido board. For knobs, a lot of times I go to a music store. Some stores carry a big assortment of custom knobs for guitars and basses that can work good for diy amps as well.

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