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Hi guys and girls, while watching Lovetone Big Cheese demo on You Tube the guy ended demo with a little text where was written that if it is expensive for you to buy it you can build OLC Chunky Cheese which is almost identical in sound to the Lovetone product! A little search and I luckily I found it! Be patient while downloading, it's a 25 page document!
http://www.olcircuits.com/documents2008 ... dguide.pdf

Enjoy!

And demo:

It should be identical to the original except for more volume.

part list no IC & Q1 Q2 Q3 D1 D2 D3

iloophao wrote:part list no IC & Q1 Q2 Q3 D1 D2 D3

They are on the next page!

Bernardduur wrote:

iloophao wrote:part list no IC & Q1 Q2 Q3 D1 D2 D3

They are on the next page!

yes i find it , i use page down, so not see it. sorry

FYI, a big cheese clone project has been available at general guitar gadgets for years:

http://www.generalguitargadgets.com/ind ... &Itemid=26

Looks like they added R19 and C15 to add gain to the final opamp. I never had problems with the volime of the original circuit.

What would be fun is to have control of the wicked octave down. Some I've built had it up the wazoo, some don't.

I've A/B'ed a Big Cheese and Chunky Cheese side by side and they sound identical to my ears apart from the OLC having more volume like was mentioned above.
Here's a low quality video I did.

SPeter wrote:Hi guys and girls, while watching Lovetone Big Cheese demo on You Tube the guy ended demo with a little text where was written that if it is expensive for you to buy it you can build OLC Chunky Cheese which is almost identical in sound to the Lovetone product! A little search and I luckily I found it! Be patient while downloading, it's a 25 page document!
http://www.olcircuits.com/documents2008 ... dguide.pdf

Enjoy!

anyone have a pcb image for this? I wanna etch one..

www.geofex.com, search the page for "big cheese"

Barcode wrote:http://www.geofex.com, search the page for "big cheese"

yes, i can verify that one as i've built two of them... found whatever hard to find parts at mouser and it's a fun build, the circuit gives great fuzz/distortion and it blends well with a Devi Ever Karaoke Party OD as well as my Blackout Effectors Twosome.....

Dan N wrote: What would be fun is to have control of the wicked octave down. Some I've built had it up the wazoo, some don't.

octave down?! never got that. are you talking about that lovely 4th mode.... the gated fuzz? i muse be doing something wrong!

FWIW, i'm talking about my great cheddar build... not the original or the OLC clone.

worked perfectly off the bat and has GREAT fuzz sounds all over though. love it.

Barcode wrote:http://www.geofex.com, search the page for "big cheese"

cant find it?

dude, a google search turns up these two links in about 1 second:

http://www.geofex.com/Article_Folders/grtchedrschm6.PDF
http://www.generalguitargadgets.com/dia ... dar_v6.pdf

i've built a geofex clone and have a question.

in the gated position of the switch, the fuzz is VERY gated, and no sound is coming unless the fuzz pot is at very low settings.

is this normal?

flood wrote:

Dan N wrote: What would be fun is to have control of the wicked octave down. Some I've built had it up the wazoo, some don't.

octave down?! never got that. are you talking about that lovely 4th mode.... the gated fuzz? i muse be doing something wrong!

FWIW, i'm talking about my great cheddar build... not the original or the OLC clone.

worked perfectly off the bat and has GREAT fuzz sounds all over though. love it.

Nope. On a couple I've built you could hit a note at the 12th fret and it would drop an octave as the note faded out. It was a really cool effect, a kind of fog horny thing. You could also pick gently at the 12th and get a quick drop or just play lower octave notes from high up on the fretboard. This was not in the cheese position.

Is the schematic for the OLC board posted anywhere?
I know I could trace it but if it's out there then I can
save some of my non existant free time.

John

If you were to get RG's schematic and your pinkest crayon, you'd change the last opamp thusly:

Ok, thanks Dan.