Treble boost with RRR?

[KoskineN]

Hi all! I don't know if it's a normal behaviour of the RRR, but it seems to had some highs when used with a fuzz.
It doesn't seems to had highs otherwise, even with other types of dirt boxes. Am I crazy?

[Ryan]

The RRR boost section is full frequency, I don't limit the highs at all, and it's boost only, no cut, so when combined with some of the reverb patches with accentuated highs like the plates or the bright hall if you have your level knob up at all you're going to be adding to the high frequency content and making things sound overly bright.

I suggest when using the pedal with some gain just make sure you leave the level all the way down.

You could also be experiencing a bizarre interaction between the germanium fuzz face style circuit and the RRRs buffer... I've had another gent tell me about a similar problem with a particular fuzz pedal of his, a germanium fuzz face, and there's something to that combination that one of the pedals involved reacts funny to. I don't have a cure for that one, sometimes that style of circuit and buffers just can't work together.

[Jack Deville]

You could also be experiencing a bizarre interaction between the germanium fuzz face style circuit and the RRRs buffer... I've had another gent tell me about a similar problem with a particular fuzz pedal of his, a germanium fuzz face, and there's something to that combination that one of the pedals involved reacts funny to. I don't have a cure for that one, sometimes that style of circuit and buffers just can't work together.

+1.

This does sound like an impedance concern.
What is the fuzz pedal? Have you encountered this symptom when running other pedals after the fuzz pedal?

Here is a simple verification:
Engage the fuzz pedal in question while feeding the signal into a mass produced buffered pedal in bypass mode. Similar results confirm an impedance concern.

I'm very interested to hear your results!

[gururyan]

The RRR boost section is full frequency, I don't limit the highs at all, and it's boost only, no cut, so when combined with some of the reverb patches with accentuated highs like the plates or the bright hall if you have your level knob up at all you're going to be adding to the high frequency content and making things sound overly bright.

I suggest when using the pedal with some gain just make sure you leave the level all the way down.

You could also be experiencing a bizarre interaction between the germanium fuzz face style circuit and the RRRs buffer... I've had another gent tell me about a similar problem with a particular fuzz pedal of his, a germanium fuzz face, and there's something to that combination that one of the pedals involved reacts funny to. I don't have a cure for that one, sometimes that style of circuit and buffers just can't work together.

My D*A*M 1966 never got along with my RRR.

[devnulljp]

Most of those old fuzz circuits just hate being in line with buffers of any sort. It can kill the tone, deaden the fuzz, or in some cases just kill the signal altogether (I have an old 65 FZ-1A that does this if it's in the same room as a buffer it seems, it just goes dead).

[KoskineN]

Here is a simple verification:
Engage the fuzz pedal in question while feeding the signal into a mass produced buffered pedal in bypass mode. Similar results confirm an impedance concern.

I'm very interested to hear your results!

Just did the test using an old Boss CS-3 between my MXR Classic 108 fuzz and my Miniberator. No treble boost that way. The RRR had the reverb and level at 0.
I also did the test with some Fulltone fuzzes with the same results.

It's not a big deal in the end. I'm really enjoying it either ways.

[Jack Deville]

Looks like I missed the target.


What fuzz pedal is doing this?

[molokaio]

what happens if you put a buffer BEFORE the fuzz?
I had a similar problem with a borrowed DAM fuzzsound into the skrecho. That seemed to solve the problem... infact I was experiencing a hi mid boost and low cut, in other words the most awesome fuzz on earth turned into shit. But that seemed to cure it if I recall correctly.

[Gilmourish]

I thought you should keep buffers after the fuzz? my roger mayer axis fuzz is the first thing in my chain because it hates buffers before it...

[Eric!]

I thought you should keep buffers after the fuzz? my roger mayer axis fuzz is the first thing in my chain because it hates buffers before it...

+1...

[Blurillaz]

I thought you should keep buffers after the fuzz? my roger mayer axis fuzz is the first thing in my chain because it hates buffers before it...

Not all the time, some fuzzes react incredibly well with buffers!
(one of teh main mods for JH's fuzz face's was a buffer before the circuit >.> )

[Gilmourish]

Oh yeah... I know but when people complain that their *enter fuzz here* sounds like poo most people say put it first on your chain and see how it sounds then.

[Blurillaz]

Oh yeah... I know but when people complain that their *enter fuzz here* sounds like poo most people say put it first on your chain and see how it sounds then.

AGain, it depends what fuzz.

[KoskineN]

Looks like I missed the target.


What fuzz pedal is doing this?

It's the Fulltone '70 and MXR Classic 108, both silicon fuzzes. The '69 does not seems to suffer much from this.

[Ryan]

What an annoying problem, hey! I only have one Fuzz Face style pedal here to experiment with, I'm assuming it's silicon but I've never investigated, and it behaves perfectly normally with the RRR so it doesn't illuminate much for us. I wish I had a cure for you... if you have a soldering iron and would be up for some experimenting maybe we could try a couple things...

I wonder if my simple buffer setup might be part of the problem here... one thing I'm thinking is we could try removing the 100pF cap to ground off the buffer op amp input as it could be part of an unintended and disagreeable filter in this situation. We could also then try adding a bit of series resistance to the buffer input, 1k to 10k, and a different cap to ground, say .001uF (or no cap to ground) in an attempt to again alter the input filtering and change that response.

Other than that I don't have any solutions I'm afraid... Quebec to Alberta is a bit of a drive but you're welcome to pop over with your pedals for some proper experimentation!