Troubleshooting - Peavey TriFlex Manual

Applications
The TriFlex has a variety of applications such as sound reinforcement‚ public address or musical playback. DJ use is
supported in the three-channel stereo mode. Of course‚ using the TriFlex in the traditional role - strictly as a
powered subwoofer - is also a great choice. A typical signal source for the line-level inputs (5) would be a sound
reinforcement mixing console (mixer) or the output from a CD player or tape deck.

TROUBLESHOOTING

No Output
First‚ make sure the unit has AC power and is turned on. Ensure the Power LED (4) is illuminated. If not‚ make
certain the On/Off switch (3) is in the ON position and check the IEC power cord connection (2) by ensuring it is
fully engaged and seated. Make certain the AC line cord is plugged into a working AC outlet. Finally‚ check the fuse
(1). (See the Rear Panel: Fuse section for safety instructions.)
Once assured your unit is getting AC power‚ check that the TriFlex is receiving a signal. Disconnect the cable
running to the TriFlex inputs and connect it to some other device capable of reproducing the signal (i.e., a power
amp and speaker). If this produces a signal‚ make sure the Master System level control has been turned up to a
satisfactory level (1/3 to 1/2 up).
If the TriFlex has been subjected to direct sunlight or excessive heat, the built-in thermal protection may have been
triggered. If you suspect this may be the cause‚ turn off the TriFlex and let it cool for a sufficient amount of time.
If there is still no output‚ contact your authorized Peavey dealer or the Peavey International Service Center.
Hum or Buzz
If the TriFlex is producing a hum or buzz‚ it could be AC-outlet related. Try plugging the unit into a different AC
outlet. Sometimes‚ if the mixer and the TriFlex are on different circuits (breakers)‚ hum problems can result.
Ensure that shielded cables have been used to route the signal to the TriFlex's inputs. If speaker cables with 1/4"
plugs are used as input cables instead of shielded cables‚ the system will be prone to hum or buzz.
Hum may be ground-loop related. Two ground lift switches are provided on the TriFlex. One is located at the input
jack group (10a) and the other at the high-pass output jacks (10b). Check any input changes carefully by first
turning down the volume control, then plugging and unplugging cables or switching ground lifts.
Check to make sure light dimmers are not on the same circuit as the TriFlex‚ the mixer or any audio source
devices. If light dimmers are used‚ then it may be necessary to turn them full ON or OFF to eliminate or reduce
hum. This is a typical AC wiring/light dimmer interference problem and not a design flaw of the TriFlex. The third
wire ground plug on the AC plug should NEVER be removed or broken off.
Rattling or Buzzing
The TriFlex produces extremely high output capacity at very low frequencies. It is capable of vibrating objects that
are not solidly affixed or mounted. It can excite light fixtures‚ suspended ceilings‚ racks‚ shelves‚ tables‚ chairs‚
equipment cases‚ lift handles on equipment‚ casters‚ doors‚ windows‚ etc. Be sure to check where the sound is
coming from, as it is likely coming from one of these sources and not a fault of the unit.
9