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effects not playing nicely together
- Thread starter Downunderwonder
- Start date
bongomania
Commercial User
It's the daisy chain connections from the supply that complete the main loop through which the noise travels. Isolating the power for each pedal breaks that loop, reducing or eliminating the noise in most (not quite all) cases.
To be clear, it's not the wart itself that is "isolated", but rather the pedals that need their power isolated from other pedals. So you can do that by using batteries, or separate wall warts for the "problem" pedals, or buying a brick-shaped supply with isolated outputs like the Voodoo Labs PP2. Note the Dunlop Brick does NOT have isolated outs.
To be clear, it's not the wart itself that is "isolated", but rather the pedals that need their power isolated from other pedals. So you can do that by using batteries, or separate wall warts for the "problem" pedals, or buying a brick-shaped supply with isolated outputs like the Voodoo Labs PP2. Note the Dunlop Brick does NOT have isolated outs.
Isn't the isolation unit generally a waste of time when they are all sharing their signal ground and some of them share signal ground with power supply ground?
The cool cat is a power hog so no way it's going on a battery. I don't know about the G.R.
The cool cat is a power hog so no way it's going on a battery. I don't know about the G.R.
bongomania
Commercial User
Did you not say the noise goes away when you take the Cool Cat out? How do you know isolating the power, breaking the main loop, isn't the solution?
That was the point of my question. It seems to me that isolating the power supply side doesn't actually break the noise loop between the pedals since they are always connected via signal minus / casing earth, which is commonly the -ve of the power also.
I am a bit at sea with this level of electrical discussion, sorry about that.
Cool cat has a buffered byoass ( like I know what that means, I know what a true bypass is) Assuming it's the source of the nois, how come only the GR reacts when all the rest play nice? And yet the GR plays nice with all the others, proving the culprit is the Coolcat, I think.
I am a bit at sea with this level of electrical discussion, sorry about that.
Cool cat has a buffered byoass ( like I know what that means, I know what a true bypass is) Assuming it's the source of the nois, how come only the GR reacts when all the rest play nice? And yet the GR plays nice with all the others, proving the culprit is the Coolcat, I think.
Ba55Man1ac
Gold Supporting Member
The aim is to only have 1 path for ground/earth currents to flow. The moment you have 2 paths, you create a loop. So yes, the grounds will (almost) always be connected via signal cable shields, it is the addition of a common power supply ground that creates a 2nd ground path, thus a loop is formed.
Note: This may or may not be the cause of the problem you are experiencing... electronics can be pretty random!
