Peavey PR 10P - Manual (Page 10)

10
H Hu um m o orr B Bu uzzzz
If the PR ™ 10P is producing a hum or buzz, this can be AC outlet related. Try plugging the PR 10P into a
different AC outlet. Sometimes, if a different circuit (breaker) is used for the mixer and the PR 10P, it can
cause hum problems.
Ensure that shielded cables have been used to route the signal to PR 10Ps inputs. If speaker cables with
1/4" plugs are used as input cables instead of shielded cables, it will be prone to hum or buzz.
Hum may be ground loop related. Try lifting the ground connection at the speaker end of the signal cable if
it is a balanced signal cable. Check any input changes carefully by first turning down the volume control,
plugging and unplugging cables, or lifting the shield ground at the speaker end.
Check to make sure light dimmers are not on the same circuit as the PR 10P, the mixer or any source
devices. If light dimmers are used, then it may be necessary to turn them full ON or full OFF to eliminate or
reduce hum. This is a typical AC wiring/light dimmer interference problem, and not a design flaw of the PR
10P. The third wire (ground plug) on the AC plug should NEVER be removed or broken off.
D Diisstto orrtte ed d o orr FFu uzzzzy y S So ou un nd d
First, ensure the mixer (signal source) is not clipping or being overdriven. Make sure the volume control/s
(7) and (9) on the PR 10P have not been set too low.
Check that the input plugs are fully seated in the input jacks (5) and (8) on the rear panel of the PR 10P.
Ensure that the proper MIC/LINE PAD setting is being used (6) for line-level signals, or that a power amp
has not been plugged into one of the input jacks of the PR 10P.
If an extension cord is being used to provide the AC power to the unit, ensure that it is of sufficient
current capacity and that it is not also being used to supply power to any other device.
The PR 10P has built-in EQ to extend and smooth the natural response of the speakers in the system. Bass
boost and HF EQ have been applied and the system has a nominally flat response, so it should require
little, if any, additional EQ. If excessive additional bass boost or HF boost have been added externally to
the PR 10P, it could cause premature overload at high SPL. Reducing the amount of any external (mixer,
rack) EQ and see if that clears up the distortion.
Finally, realize that even though the PR 10P is a powerful and high output unit, it does ultimately have
limits, and it may need additional powered units (or a subwoofer) to provide enough sound output or
coverage. In this case, try turning the mixer levels down a little to see if that clears things up.
If, after checking all the things listed to check and anything else you can think of to check safely, and the
system still exhibits problems, carefully note all conditions and check with your Peavey dealer for advice.
C Ca arre e a an nd d M Ma aiin ntte en na an ncce e
Your PR 10P is a sturdy and durable product and will provide years of reliable use if properly cared for. Use
common sense and read the safety warnings to avoid hazardous operating conditions.
The unit must be disconnected from the AC power source before any work is done on it. Refer all servicing
to qualified service personnel.
S Su un nlliig gh htt//H He ea att
Avoid prolonged exposure to direct sunlight, as this may cause the unit to overheat and thermally shut
off. Excessively hot operating conditions can also cause a thermal shutdown.
Do not store in extremely hot or cold conditions,or extremely high humidity. Always allow unit to come to
room temperature before use.
C Clle ea an niin ng g
Never clean the PR 10P while plugged in or turned ON! When the unit has been fully disconnected from AC
power sources, use a dry cloth to remove soil or other dirt. Never use strong solvents on the PR 10P, as
they could damage the cabinet. Do not allow ANY fluids to drip inside the PR 10P.