Changing the input impedence of a Boss Tuner to match the output of Fuzz Face

[mr.adambeck]

I've read that to get the best tone out of your fuzz face you need to match the input impedence of any buffers that follow it.
So I'm wondering if anyone knows how I find out the output impedence of my Fuzz Face and how to find out and possibly alter the input impedence of my tuner that I have after it.

Thanks!

[liquids]

Your fuzz face wants to see your guitar pickups.

Some thoughts....Run the fuzz face first, then the tuner.  Build a box that contains the fuzz face and has send/returns on the tuner, so that the tuner is 'out' when the fuzz is 'in' and vica versa...

Leave the tuner as is (buffer on all the time) and add some series resistance/resistance to ground of your choosing at the input of the fuzz face (maybe put it in a switch, in case you stop using this tuner at some point) that gets it close to where you want tonally, so that when the fuzz face is 'on' it compensates for the buffer....

Also...surf around here...the tu-2 and fuzz face issue has been discussed before...and again before that....etc.

Good luck, happy brainstorming. 

[earthtonesaudio]

The output impedance of a Fuzz Face is not less than:
The collector resistor + the amount of resistance between volume pot lugs 2 and 3.

Generally a high impedance buffer (i.e. 1M ohm) will not significantly attenuate this signal.

However,  I think this:

I've read that to get the best tone...

...is a much worse problem than any impedance mismatch.  This is causing you to have Blind Urge to Mod Syndrome.  Seek help!   

[liquids]

I see I misread the question...sorry.  Thought you were having buffer--> Fuzz Face issues.  Thanks Alex. 

[Ben N]

Edit: Never mind. AFter reading Alex's post and looking at the schematic, I see that the Z-out of a FF can indeed be high enough, at least at low volume settings, to be a mismatch for the Boss buffer, which, IIRC, is 470k or 500k.

[brett]

The high impedance at low volume of many pedals can result in the loss of some volume.
So.....turn up the volume a bit.
It's not rocket science.

[aziltz]

Edit: Never mind. AFter reading Alex's post and looking at the schematic, I see that the Z-out of a FF can indeed be high enough, at least at low volume settings, to be a mismatch for the Boss buffer, which, IIRC, is 470k or 500k.

It's a general rule of thumb that the input impedance of the next section should be 10x or greater the output impedance of the previous.

Actually, by "Matching" them, or making them the same value, you will cut the output in half and the performance will suffer.


Can you hear the difference between the FF and the FF --> Tuner/Buffer?