Ground Loops - Parker Nitefly Handbook

G L
ROUND OOPS
Sometimes when using two amps, there may be a loud hum when the guitar is plugged into the
second amp. This hum is caused by a ground loop. This ground loop isn't the fault of the guitar (or
the amps for that matter), but rather the result of essential electrical safety code requirements.
Ground loops can occur whenever two pieces of electronic equipment are connected.
NOTE: Do Not Disconnect Or Otherwise Attempt To Defeat Ground Connections On Your
Electrical Equipment !!
There is ONLY ONE safe way to rid yourself of ground loops: Use a Direct Box with a ground
lift to isolate the two amps. Plug the magnetic end of the stereo "Y" cable into one amp and the
piezo end into the Direct Box. Plug the Direct Box's output into a balanced input on the second
amp.
ADJUSTING YOUR PARKER GUITAR
If you're unfamiliar with adjusting instruments, we suggest that you take your NiteFly to a qualified
guitar technician. He or she can help demonstrate these adjustments and you can decide which
ones you might prefer to have made professionally.
V A
IBRATO DJUSTMENT
When the bridge is adjusted parallel to the top of the guitar (see illustration 1) and the guitar is in
tune, the bridge is in the HOME position.
Start from HOME
7
Illustration 1