Pawn MkII

[tomhanzo]

I got bored in pharmacology and drew this up.



What do you think?

[thobbinghotrod]

I don't see the tri-y flux capaciter, otherwise, good job.

Just joking! What is it?

[tomhanzo]

lol thank you for the confidence boost.

Its a loop pedal with the option to mix in the clean signal. It also lets you adjust the tone and volume of the clean signal.

Every one is Ape poop over the dry switch on the BBM. I figured i would make a pedal just for it.

[tomhanzo]

OK well i see my thread is super popular, so i guess I'm making a computer drawn version of this after class today. I just want to know if anyone would want me to make them one.

[dune2k]

Hi,
first off: the schematic is hard to read since it's mirrored (in is supposed to be on the left side).
The problem with passive mixers is that the pots (volume in this case) interact with one another. Also you will lose some/alot of volume.
To make it properly work google for buffers & how to use them. There are also quite alot of projects for blending circuits around.

[tomhanzo]

yeah i had feared the volume drop. I wasnt sure. I'm new to electronics. I guess ill cut out the tone pot and just see how the volume knob alone works. My idea is to make this a simple loop pedal that introduces some of your original signal back in, like the BBM. I dont mean for it to have any volume boost. As long as its fairly close to the original volume, the pedal in the loop will have a volume to give me my full sound.

O and i forgot to put the lols in my last message. I didnt mean to come off like a doucher lol

[tomhanzo]

Ok here we go. I wanna say thanks to Beavis Audio Research for all i learned there. I hope he is semi-proud.

[gnasher1993]

Originally Posted by tomhanzo

Ok here we go. I wanna say thanks to Beavis Audio Research for all i learned there. I hope he is semi-proud.

I don't think that will work as you expect it to. I'm not really sure what you're going for . A wet/dry blender?

[tomhanzo]

Originally Posted by gnasher1993

I don't think that will work as you expect it to. I'm not really sure what you're going for . A wet/dry blender?

Well maybe I can explain it better.

From my understanding, my Bass Big Muff has a dry switch which reintroduces your unaffected dry signal into the output.

I have done that in this loop. I also added the volume pot, so i can lower that dry signal.

Does that make sense now? Like I said I'm new to this. I wasnt sure if it would work or not.

[bongomania]

Passive mixing sucks, badly. I highly doubt the wet/dry switch on the BBM is a passive circuit.

[tomhanzo]

Really? crap

So if i dropped the pot and just had a switch there it would still drop the dry's volume?

[dune2k]

My bass teacher uses a simple Y-cable for him & his students. The result is a biiiig volume drop when both basses are plugged in.
The same will happen here.

To prevent this you need a buffer stage (transistore/opamp) to basically seperate the signals of both the clean & processed signal. At the same time these buffer stages can easily give some boost (around ~15db or so, too lazy to look it up ).

One of these projects can be found here: http://www.moosapotamus.net/things/paraloop.htm
A simpler one, though not as good especially with fuzz/distortion (as I read, haven't tried it myself): http://www.aronnelson.com/gallery/ma...mVero.gif.html

[tomhanzo]

aww boo. Well thanks for warning me before i got into it.

I've seen that bottom blender schem before somewhere. I may try to do it. I have a few other what i call "complex" projects ahead of this one.

[MNAirHead]

aby box and a mixer head will do this for cheap

[tomhanzo]

yeah but i just wanted to do something super simple and effective. O well its a scrapper