Comments on: Quick Rat pedal mod

By: samsara

samsara — Fri, 21 Aug 2009 16:05:47 +0000

I want to add more bass to my Vintage Rat (witouth the losing-gain deal). Also have a Dirty Rat but I can’t use it because its noisy as hell. Even with the guitar volume rolled off. Could you help me, please?

By: Pekka

Pekka — Sat, 17 Jan 2009 11:00:39 +0000

I did something similar couple of years ago. I also got the idea from the Ruetz rat. More here: http://kotipolttoinen.com/wanha/sisalto/kitara/rat_mod/index.php

By: Erik

Erik — Wed, 07 Jan 2009 05:55:06 +0000

This is a great mod. After reading over it a couple times, I decided to crack open my Rat II and do the deed. I just clipped the side of the 47 ohm resistor facing the op-amp but I will most likely desolder the rest of it and remove the 2.2uf cap as well. I didn’t mess with C6 yet but I’ll know if I’ll need to after a couple gigs this coming weekend. Thanks again, Jack. Your site is one I frequent when it comes to things DIY.

By: wgtp

wgtp — Wed, 01 Oct 2008 16:35:36 +0000

I prefer to disconnect the low frequency leg, or add the 4.7uf cap to the 2.2uf cap for a mega rat.

By: dano

dano — Mon, 22 Sep 2008 16:04:42 +0000

The Lube mod on my site is not novel, it originally came from the ruetz mod (google it) so I can’t claim credit.

Jack’s ideas will offer you a quite a bit more control because of the changes in cap values whereas the ruetz mod just makes a single resistor into a pot.

happy Monday!

By: jonb

jonb — Fri, 19 Sep 2008 03:40:27 +0000

this mod also works on the you dirty rat!!!
just tried it it really opened up the tone:)

By: Kerry Maxwell

Kerry Maxwell — Tue, 16 Sep 2008 00:58:02 +0000

FWIW, I have some pics of a RAT 2 board at my website:

http://www.bwanasonic.com/html/sights_rat2_01.html

When I get a chance maybe I’ll hilite some *modspots* on those pics. Right now I’m trying to work out the best way to implement these C6 / C7 mods via switching, as I really like the my Rat sounds right now.

By: admin

admin — Mon, 15 Sep 2008 21:35:49 +0000

>>>The mod you’ve told is similar like Dano’s (Beavis Audio Reseach) Lube mod.<<< Excellent, Dano is a good guy and we obviously think alike. I've been recommending this mod for years on the pedal forums, but the C6 mod is really what makes it stand out. I find the best sound is had by removing C7 and changing C6 to 0.47uF regards, Jack

By: Kerry Maxwell

Kerry Maxwell — Mon, 15 Sep 2008 14:39:40 +0000

Looks like I’ll have to crack open my beloved RAT2 for another round of tinkering. I have a cap across the volume pot to trim the *hair* off the treble. This gives a more usable range to the filter knob. I also added a third clipping diode for asymmetric clipping, and replaced a 1 uf electrolytic or two with non-polar films. Now I may want to put C7 on a switch.

By: Yunus Emre TOKMAK

Yunus Emre TOKMAK — Mon, 15 Sep 2008 14:20:59 +0000

The mod you’ve told is similar like Dano’s (Beavis Audio Reseach) Lube mod.

Thanx anyway…

PS: Sorry for my bad English