Add a bass and treble control to a classic rat?

[Fuzzguy801]

I really want to build a Proco Rat that has independent bass and treble control. is this possible using the existing Rat layout here or would it be an entirely different layout to achieve something like this? if it is possible how would I go about doing it?
any help is greatly appreciated

[Beaker]

I would go for a Baxandall circuit. You should be able to insert it either before, or after (which I think should work better) the Rat circuit, but you may need to try both options to find out which works best.

Type Baxandall into the search box above. There are two versions, an active version, and a passive version with a LPB-1 added for gain recovery.

[KT]

Or you could build this one.
http://tagboardeffects.blogspot.be/2014/07/idiotbox-blowerbox.html

[2liveis2die]

What KT says. The idiotbox blower box is a good one. its designed for bass so id suggest tinkering with the values in the bass section of the tonestack (i think its centered around 40 Hz). Although it does sound good on guitar.

[rocket88]

i took a look at the blower box and compared it to the rat, and in all honesty while it's "tuned" for bass it's really not much different to make it better for bass IMHO. one of the big issues with the rat that limit the bass in in the gain control and the frequencies it affects, and if you look at the blower box the resistors and caps are stock rat values. with that being said, it's a rat with bass and treble controls.

[octavio]

Hi! I'm looking for a Rat with bass & treble too. I've build the Soulsonic Mojo Cake and I found it fat as hell, somewhat similar to the Rat at higher setting, but being a Rat fan for years, sadly the Rat hasn't enough balls to compete against the Cake clone. Do you thing that I can use the IdiotBox layout to put a Vintage or a You Dirty Rat together and make it bassier with the controls from the IdiotBox?

My plan is to have a Cake and an Wampler Ecstasy in one box and the Vintage/Dirty w bass and treble and a Katzenkonig un another box. My fear is that the Cake sound fatter than the rats...

A little advice, please

[motterpaul]

I wish I had seen this a week ago, I just spenbt two days building and then trouble-shooting a RAT that had oscillation. I fixed the oscillation (swapped out the 30p cap for a 56p) - but then my FET died and it took me a long time to figure that out (I just losy half my gain, but everything still worked).

I wondering how to add tone controls to the RAT.

I just built this JHS Superbolt by John King: http://guitar-fx-layouts.42897.x6.nabble.com/JHS-Superbolt-td8459.html#a8661 and it is AWESOME.  But - the tone control does not seem to do anything, and I would like individual controls.

I will post over there and ask him - but thanks for the tip on RAT with tone controls above.

[2liveis2die]

Yes you should be able to. its basically a stock rat up the the "filter stage" then thats where the blowerbox changes, the blower box as it is sounds great on a guitar. i didnt like it so much with LEDs as clippers on guitar though. was good with bass though