6
Using separated supply is the basic agent enabling to build the guitar
systems without ground loops and supply crosstalk (the influence of variable
load of one effect on the second). The best solution is to use separated
supply of every effect. The exception from this is possible when the following
conditions are met:
- effects are placed in pedalboard or in other place fare from big mains
transformers
- the effects are in the same part of the path (e.g. on the effects or
before the amp input) and are placed one by one in the signal path
- the effects aren’t the overdrive, boost type effects (with high gain) or
the effects consume the current impulsively e.g. those equipped with
LED display.
The diagram below shows the cable for supplying two 9V effects with polarity
CTR - (centre negative) from one 9V source (9V CTR - input, two 9V CTR -
outputs).
To link the cables you need basic tools and heat shrink tubes (provided with
adapter). Strong screwing together the wires and using the heat shrink boot
assure reliability and durability of the linking even for three wires.
