cut bass is very neccessary for most distortion, along with boosted mids/treble. bass should then be boosted and treble cut after the distortion so the clean bass can beef up the otherwise thin distorted sound
I use this in conjunction with a guitar to get valve type distortion. There is a sweet spot on the pot that sounds very good.
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hey just been playing with one, sounds pretty good!, i only used a NFB resistor and the 2 transistors, connected them base to base, and emittor to collector or however it is, and it does sound pretty good
though just like any distortion most of it does seem to be in the EQ, a lot of bass roll off, and plenty of highs, then a little high cut and bass boost at the end
I finally dug up my MXR Distortion + board. I had scavenged a couple of parts off it for another build but just a couple of jacks needed and a case to put back together..once I clean up the wires Once it gets going and add the FB transistors I will post and maybe start a new thread on a pedal build ..if anyone interested in continuing.
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yeah im quite interested in that, hehe yours looks a bir tidier than mine, mines just a breadboard in a aluminium box and it looks like ive just thrown some stuff in there... though it works quite nicely!
Try this one, one of the nicest sounding fuzz effects I've ever heard.
http://www.tonepad.com/getFile.asp?id=119
Mike
http://www.tonepad.com/getFile.asp?id=119
Mike
At least your circuit made it's way into a box! I was going to load it into a Hammond stompbox case but have decided on bigger one to leave room to modify etc.
Michael's post about Craig Anderton's Tube Sound Distortion circuit being one of the best out there, is right on the money IMO. His book Electronics Projects for Musicians is what got me into electronics industry way back when. Recommend building that circuit as well if anyone gets a chance..very worthwhile.
Here is an interesting article that analyzes the EQ and the importance on the distortion circuit, based on the well known green TS pedal. As you said it's all about tone.. and how the FB is applied.
Tube Screamer®'s Secret - BTE Audio
ah yes ive seen that site, the TS is pretty simple and the amount of distortion and gain in it probably makes the EQ less important.
Im quite sure EQ plays a bigger part in higher gain, though its always important. what it says about phase shift
Im quite sure EQ plays a bigger part in higher gain, though its always important. what it says about phase shift
Hi Nigel, thanks for posting that. I thought it was you that had mentioned it previously, but wasn't sure.
I'm currently running Ch1 with only one LED installed. When used in conjunction with pedal-based distortion, it sounds rather good, though the 4x8" cabinet I'm using is too bright and extended in the treble. I've left a chocky block in there (soldered wires to the board), so it's easy enough to experiment now. I'll give your circuit a try and report back.
Cheers,
Chris
I picked the circuit up in around 1980 from a Wireless World article.
You might find it lacks top end so a treble boost circuit might be required if used with a guitar.
hard/soft clip build
Cleaned up wiring on the Distortion + board and mounted in chassis. The chassis is bigger, as I want to be able to experiment a bit with various setups for hard/soft clip. I removed the 1N270 diodes from the op-amp output circuit, and will wire up a selector switch to be able to switch from them (at the output) to the transistors in the FB circuit. Aiming to add a Tone control after, as the original Dist + did not have one.
Cleaned up wiring on the Distortion + board and mounted in chassis. The chassis is bigger, as I want to be able to experiment a bit with various setups for hard/soft clip. I removed the 1N270 diodes from the op-amp output circuit, and will wire up a selector switch to be able to switch from them (at the output) to the transistors in the FB circuit. Aiming to add a Tone control after, as the original Dist + did not have one.
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For anyone interested, I am posting a new thread for the pedal build.
Here is the link
http://www.diyaudio.com/forums/instruments-amps/200075-distortion-pedal-build.html#post2774090
Here is the link
http://www.diyaudio.com/forums/instruments-amps/200075-distortion-pedal-build.html#post2774090
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