Blue Box

MXR Blue box type effect designed by tonepad.com

I finally put the pedal in an enclosure and can be seen here http://distofx.co.uk/imgs/bluebox1.jpg

Image of the PCB can be found here
http://distofx.co.uk/imgs/bluebox2.jpg

http://distofx.co.uk
heres the page http://tonepad.com/project.asp?id=33

Category:

Music

Tags:

• distofx
• disto
• fx
• mxr
• blue
• box
• bluebox
• tonepad
• tonepad.com
• distofx.co.uk

[ConorNosThrill]

something I noticed which it doesnt exactly specify in the data sheet is the DIP8 chip. "4558" can mean many things depending on the letters that go infront. Basically, what 8 pin chip did you use?

[notanother]

@ConorNosThrill I can remember the exact chip I used in this pedal, I could have used any OPAMP i had at the time. I imagine the 4558 is probably the JRC4558 often used in tubescreamer mods, try having a look for that or some alternatives used in the tubescreamer. I had a quick look on wikipedia for the tubescreamer and it mentions TL072, RC4558P, and OPA2134

[TheViewFromUpThere]

Can you etch with overhead projector paper and not magazine paper?

[notanother]

@TheViewFromUpThere Im guessing by overhead paper you mean the transparent plastic sheets. No you can use these, they'll stick to your iron and make a horrible mess. The magazine paper you need is very cheap thin but glossy, print onto it with either a laser print or photocopier (If the printer has trouble with thin paper try sticking it to a normal sheet of paper with prit-stick)

[WingedS777]

Is there a possibility of builting blue box without fuzz? I want just octave down to get pitches like on a bass guitar.

[notanother]

i think the bluebox has a control allowing you to blend between a distorted signal and a square wave, however since the blue box output a squarewave this will be a fairly synth like distorted octave signal. you may want to look at another octave, the blue box is a noisey little box

[00Pdr]

If you watch "watch?v=cUzMMuNbOMw" you can see that you mounted the Blend Pot the other way around. Your fully down is original fully up.

[ConorNosThrill]

@notanother Alright, thanks for the info.

[TheViewFromUpThere]

One more question: What kind of output jacks did you use?

[TheViewFromUpThere]

@notanother That was my exact problem. Sticking it to something else is genius, thank you very much!

[marcovich166]

que gacho se oye