This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.
Another fun overdrive from Rockett, this time going for a Plexi sound. Think of it as the first half of a buffer-less Tube Screamer with an AMZ Stupidly Wonderful Tone Control 2. Here's the schematic for reference. Should be an easy fit in a 1590B.
In this circuit half of the op amp is not used. In original units, the unused pins are left unterminated, which can cause unwanted noise. There are a couple different ways to terminate the unused opamp pins. The vero version just uses a different method.
Just finished building this one. My build works, and sounds fantastic. All of the controls work properly, except the volume control. It has no effect at all - its always full volume. The output is isolated to lug2 of the pot. Lug 2 of the pot isn't connected to any of the other lugs on the pot. The pot is grounded out to lug1, and lug3 is taking the input. Im thinking bad it may be a bad pot, but does anyone else have any ideas before I change it out? Aside from that, I'd say this one is verified.
Circuit is good nice sounding. Only problem i have is when the snarl switch on "more gain" there is a high pitch noise. Treble at noon gain at 3 o clock. Becomes more audible when you crank both knobs. Any recommendation? tIA
Hi, I built this module and it works. but when the treble pot increases, a very strange and annoying noise comes out, the bass pot does not work, please help me!
Hi, many people have this problem with this noise on few diy Rockett Animal. For resolve this problem, I add a resistor 1M between the terminal of the Gain potentiometer (resistance 4.7k) and the 0V. Now it's works correctly. I don't found a difference sound.
Hi and merry christmas, I‘ve just finished the animal and it sounds great :-) Only thing that‘s not working is the snarl switch. As soon as I connect the cables, the signal gets completely lost. I have traced the signal at Snarl 2 and get a very clean, low volume signal from there ... is that correct? I think it should be the output signal here and maybe that‘s the reason why the signal dies when connected to the last gain stage?
Thank you. I wanted to remake Rockett Blue Note OD, but now there is a ready-made version
ReplyDeletein tag board version IC pin 4 and 5 is connected.. 47K and 470K is not connected in IC pin 5... im not found the updated schematic yet...
ReplyDeleteIn this circuit half of the op amp is not used. In original units, the unused pins are left unterminated, which can cause unwanted noise. There are a couple different ways to terminate the unused opamp pins. The vero version just uses a different method.
DeleteThanks for the explain...
DeleteHas anyone check the circuit?
ReplyDeleteJust finished building this one. My build works, and sounds fantastic. All of the controls work properly, except the volume control. It has no effect at all - its always full volume. The output is isolated to lug2 of the pot. Lug 2 of the pot isn't connected to any of the other lugs on the pot. The pot is grounded out to lug1, and lug3 is taking the input. Im thinking bad it may be a bad pot, but does anyone else have any ideas before I change it out? Aside from that, I'd say this one is verified.
ReplyDeleteMy guess would be you have a bad pot. Thanks for verifying!
Deleteverified, but the bass pot works in reverse
ReplyDeleteworks in reverse maksudnya arah putar nya terbalik kang ? bukannya tinggal swap pin 1 & pin 3 ya ?
Deletebener kang kebalik.
Deletebisa aja diputer kang, tapi ga bisa board mounted pot jadinya :D
Mas Em,
Deletebeli onboard pots dimana di Jogja?
nyari yang type C. huehe
Matursuwontengkyu
Circuit is good nice sounding.
DeleteOnly problem i have is when the snarl switch on "more gain" there is a high pitch noise. Treble at noon gain at 3 o clock. Becomes more audible when you crank both knobs. Any recommendation? tIA
Getting a high pitch noise when the snarl switch is engaged. Any recommendation? Thanks
ReplyDeleteOh.. Even when the pedal is turn off
ReplyDeleteIm hearing that high pitch. It varies when i turn any knob.. Help! :)
ReplyDeleteHi, I built this module and it works. but when the treble pot increases, a very strange and annoying noise comes out, the bass pot does not work, please help me!
Hi,
ReplyDeletemany people have this problem with this noise on few diy Rockett Animal.
For resolve this problem, I add a resistor 1M between the terminal of the Gain potentiometer (resistance 4.7k) and the 0V.
Now it's works correctly.
I don't found a difference sound.
What about the 22pF capacitor between 1 and 2 leg of an op amp? Gone?
ReplyDeleteIt seems 22pF capacitor between 1 and 2 leg of an op amp is missing (as seen on schematic) and pot for bass is reverse. Am I right?
ReplyDeleteOoops...that's correct for the bass pot, use type C pot
Delete!
Hi and merry christmas, I‘ve just finished the animal and it sounds great :-) Only thing that‘s not working is the snarl switch. As soon as I connect the cables, the signal gets completely lost. I have traced the signal at Snarl 2 and get a very clean, low volume signal from there ... is that correct? I think it should be the output signal here and maybe that‘s the reason why the signal dies when connected to the last gain stage?
ReplyDeleteCan be deleted ......
Delete