Joyo Voodoo Octave low volume

Bon Hoga · Post by **Bon Hoga** » Thu May 09, 2013 8:59 am

A friend of mine has just received a brand new Joyo Voodoo Octave. He says it's really quiet, below unity when maxed. Is this normal, or did he get a faulty unit?

Dr Satan · Post by **Dr Satan** » Thu May 09, 2013 9:50 am

Just watched a couple of demo vids on youtube and I'd say your buddy has a defective unit.

oldangelmidnight · Post by **oldangelmidnight** » Fri May 10, 2013 5:01 pm

I've got one and it sometimes seems like that. I think it depends on where it is in the chain and what other pedals it's interacting with.

Bon Hoga · Post by **Bon Hoga** » Fri May 10, 2013 6:34 pm

I see. Is there a mod to make it louder?

eatyourguitar · Post by **eatyourguitar** » Fri May 10, 2013 7:32 pm

Always

Bon Hoga · Post by **Bon Hoga** » Fri May 10, 2013 8:47 pm

Tampons or sanitary towels?

eatyourguitar · Post by **eatyourguitar** » Sat May 11, 2013 11:57 am

if you want me to walk you through it step by step, you can start by posting pictures of the board, footswitch, and jacks. if you can get photos of both sides of the board that would also help. chances are good that you can change one resistor to make it louder but if you can't, you can still add parts to the output signal that will make it louder. this mod is %100 possible. the only thing left to do is do it.

Bon Hoga · Post by **Bon Hoga** » Sat May 11, 2013 5:18 pm

Brilliant! Photos coming ASAP, thanks so much!

Bon Hoga · Post by **Bon Hoga** » Tue May 14, 2013 1:03 pm

Here are the pics, there's a whole bunch of them:

Bon Hoga · Post by **Bon Hoga** » Tue May 14, 2013 1:05 pm

More info rom the owner: the pedal hisses, but when octave is engaged hiss level drops considerably. The board says Made in 2010, could it be one of those pre-revision circuits? Again, thanks very much for doing this.

eatyourguitar · Post by **eatyourguitar** » Tue May 14, 2013 10:46 pm

this is the emitter resistor for the last transistor in a foxx tone machine. default value is 1.5K. if you want to increase the gain you can decrease this resistor. you can remove it and replace it with a smaller value like 470 Ohms. or you can solder it to the bottom of the board and leave the 1.5k in place. the lazy way gets you 1.5k + 470R in parallel = 357R. this should be a really simple mod. let me know how it goes.

Bon Hoga · Post by **Bon Hoga** » Wed May 15, 2013 6:57 am

Ta very much, I'll give it a try ASAP and report back.

Bon Hoga · Post by **Bon Hoga** » Wed May 15, 2013 7:17 am

Just to clarify quickly: by "increase the gain" you mean the pedal should be louder after the mod?

eatyourguitar · Post by **eatyourguitar** » Wed May 15, 2013 8:58 am

yes. you still have a volume knob to turn it down if it gets too loud for you after the mod.

Bon Hoga · Post by **Bon Hoga** » Wed May 15, 2013 3:48 pm

We've just swapped the resistor and the pedal rips now! However, there's a loud pop when the octave switch is engaged that wasn't there before. Did we screw something up?

ilovefuzz.com

Joyo Voodoo Octave low volume

Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume

Re: Joyo Voodoo Octave low volume