Insanity Box not working :( help!

[bancika]

Okay it's working now, i have output signal. Now the problem iz somekind of hiss - radio like...
and it changes when i move my hand around the board. How to solve this ? to mute that hissing.
Maybe i need to use coaxial cable (for onboard wiring)?

did you shield the enclosure as I told you? If it's plastic you can and will get noise unless you shield it. Shielded cable is also important!
If there isn't shielded cable where you live maybe I can get it for you here and send it to you by buss or mail. Drop me a mail if you need it...

[Cliff Schecht]

Cliff,

Did it sound like this?


http://www.ampage.org/sounds/files/inSus.aiff.mp3

http://www.ampage.org/sounds/files/inMed.mp3

http://www.ampage.org/sounds/files/inFull.mp3

Like I said, I was looking for a different type of distortion at the time I built that circuit (a good year and a half to two years ago). I was playing more chuggy style stuff and this thing was giving me a whacked out high gain fuzz, which wasn't doing it for me tonally.

Plugging it in now, it honestly doesn't sound bad at all. Actually, quite the contrary, it was very smooth sounding and though still slightly gaiting and quite noisy (I'm looking into this), the thing could really scream. It sounded especially smooth with neck pickup lead lines and straight up pentatonic wankage, but down low it just kinda gets fuzzy. If I stay up at the higher registers, this pedal sounds pretty damn decent. Too bad there's no room on my pedalboard for this, I'm actually scrapping it (or stealing the 3PDT) so that I can throw together a few other circuits.

[swt]

watch out!! the bf245 are different pinout. they are: gsd if you look them with numbers towards you. Also prefix c are really low gain. no wonder you get no distortion. get some bf245a, more than you need, then use the matching method, drain to 1k resistor to 9v, source and gate to ground, then measure the drain. Choose the ones with higher voltage, as those will get from 4volts to 7.2 volts. the higher the voltage, the higher the gain. if you can philips, they sound better and have higher gain. fairchilds are good but need to find the right ones out of a bag.

[drazenmob]

did you shield the enclosure as I told you? If it's plastic you can and will get noise unless you shield it. Shielded cable is also important!
If there isn't shielded cable where you live maybe I can get it for you here and send it to you by buss or mail. Drop me a mail if you need it...

i haven't had time to build enclosure... my grandfather has died two days ago  I will built metal enclosure and today i've found shielded cable,thanx Bancika....
i also wanted to say that i've seen somewhere on the web that Bf254c are high gain and that "a" means low, "b" means mid and "c" at the end means high gain.
this pedal is working and it has high volume and sometimes i can get realy distorted sound but it vanishes. DOn't know why..
it would be good if someone can tell me how to set that trimmers. (like this TRIM 1= value, TRIM 2 =value ...)
Thanx guys!

[bancika]

you shound set trimmers to get about half of supply voltage (4.5V) at FET anodes

[Cliff Schecht]

I think I'm scrapping mine tomorrow for the switch, I don't want to buy more and I have a flanger in the plans with a nice space on my pedalboard.

[swt]

the prefix you are talking about usually works with transistors, generally the bc family. but in these fets, it's not the case. let me check...and let you know, but been using them for a while now, and my experience tells me that.