How to simulate an ON-ON-ON switch with an ON-OFF-ON switch?

[gigimarga]

Hello,

I've just finished an Fulltone Fulldrive clone using this project (thx Wanderlust): http://wlst.jp/effector/fulldrive2/Full-Drive2-Rev.G.pdf.

It works OK, but it seemed to me that the "Comp Cut-Flat Mids-Vintage" switch acts a little strange. I've searched and I found that the switch is an ON-ON-ON switch, while mine was an ON-OFF-ON.

As it's hard to find here this type of switch, my question is how to simulate it using a ON-OFF-ON or a 4PDT switch?

Thx a lot all!

[Processaurus]

ON ON ON toggle switches are rare, but you can't get double pole 3 position slide switches?  That or a 2P3T rotary switch would do the correct switching.

If you can't find the switches or don't want to mod the case and were desperate you could make something with a CD4052 or CD4053 analog switch IC and a center off SPDT toggle switch, if you're familiar with logic.

[PRR]

3P3T switches are readily available in Rotary. Ignore the extra P. (Or wire LEDs.)

Two SPST switches gives the three stock settings.

S4 is diodes in/out.

S3 is some kind of tone/gain loop.

Both S3 and S4 closed together gives the "Flat Mids" position.

This also gives a fourth position not offered in the original: both switches open. I really don't want to untangle that drawing and guess if off-off is useful or psychotic. I don't see how it can hurt the pedal, but if it is too crazy it may throw your speaker across the room; try it with amp gain way down at first. (I suspect it is just loud and not real interesting.)

[chi_boy]

This has come up before and someone here recamended an eBay seller named HongKongSuperSeller.

The name shows up in multiple posts is searched here.

I bought some from him and have had no problems.

http://cgi.ebay.com/PKG5-Guitar-DP3T-Toggle-ON-ON-ON-Switch-UL-VERIFIED_W0QQitemZ120493890874QQcmdZViewItemQQptZGuitar_Accessories?hash=item1c0dfedd3a

[gigimarga]

Thx a lot all of you: PRR, chi_boy and Processaurus!

............
That or a 2P3T rotary switch would do the correct switching.
............

How can I do that? I don't know how his ON-ON-ON switches acts. Which are the differences from a ON-OFF-ON one?

[trjones1]

Smallbear has on-on-on dpdt switches:
http://www.smallbearelec.com/Detail.bok?no=900
Make sure you check out the explanation of how it works in the picture.

[gigimarga]

Thx a lot trjones1!
Now all it's clear for me!

The saddest thing it's that I am idiot! After I've looked at the wiring diagram of Fulldrive  and at the image from smallbear I realised that  the same thing it's on the schematic and it's very easy to do it with a rotary 2P3T switch (as Processaurus said).
It's hard for me to translate what was in my stupid mind: I thought that the poles from the schematic are referrenced to this particular type of a switch (something like "You tell somebody to wire a 1M resistor between pins 1 and 2 of a TL072, instead to wire the resistor between inverted input and the output of an opamp. If you told him this way, if he want to do the same thing to a 741 he must know first what semnifications have pins 1 and 2 for a TL072 and to look for the equivalents at 741 (pins 2 and 6, if i'm remebering well).").

Thank you all once again!

[bumblebee]

ON ON ON toggle switches are rare, but you can't get double pole 3 position slide switches?  

DP3T slide switches are readily available from mouser and any fender dealer. Mustangs use them.
You can also get 4P3T slide switches from mouser.