effect pedal hum

Try using a boss psa 120 adapter or a danelectro noisless adapter,Generic ones will add hum

: : I just recently added a Voodoo Labs analog chorus to my collection. However, I went to radio shack to get a 9 volt adapter and when I turn it on, this horrible humming sound comes pouring out. I have a Fulldrive 2 and with the same adapter there is no humming. The Voodoo Lab pedal works fine with a battery. If anybody can help me, I would appreciate it.

Not all pedals and adaptors for that matter, have the
same level of shielding. While I have had good luck
generally with radio shack adaptors, I recently bought
one of those little Dano pedals and it hums like a
mother with a RS adaptor. I also bought a Real Tube
pedal that has built in ac and that causes a real
bad hum when I plug it in and use my pedal board
with my otherwise quiet home built ps.

Have you tried using the other RS power supply to
see if that one works any better?

I also use one power strip to plug everything into,
just to try to keep everything equal....

Doug Trueblood

: Danger!!Be careful what adaptor you plug in to your pedals!Certain pedals have different requirements and are designed to operate at different AMPERAGE(speed of
: current),Htz or VOLTAGES.If the amp value of your adaptor is higher than the amount on your stom-box,you could FRY your pedal(now it's garbage).Sounds to me that A.C. input might be damaged or an internal voltage problem.Find out which adaptor work for you.
: Good Luck

Think of amperage as a rating of draw or capacity.
If your pedal requires ( draws) 300ma, your ac adaptor
will have to be rated for at LEAST 300ma; if it's rated
for more that's cool, the pedal will only draw as many
amps as it needs. The potential problem is having the
voltage mis-matched; too low and the pedal may not work
and too high and you could fry the pedal.

Doug