Topp Pro TMA54Z User manual

MULTIZONEPAMIXPOWERAMPLIFIER

INSTRUCTION MANUAL

NF03933-1.0

INDEX

TROUBLESHOOTING

SAFETYRELATEDSYMBOLS

01

WARNING

02

IMPORTANT SAFET YINSTRUCTION

03

INTRODUCTION

04

CONTROLELEMENTS

05

INSTALLATION&CONNECTION

06

BLOCK DIAGRAM

07

TECHNICALSPECIFICATION

08

TROUBLE SHOOTING

09

1
1
2
3

Symptom

No sound

No sound,

amplifier is

connected

3
6

No sound

Speaker comes on

7

No sound with

8
9

microphone connected

to MIC / LINE input

Signal sounds distorted
and veryloud,LIMIT light

is lit most of the time

Lots of hiss in sound,

mixer controls are

at very low settings.

Hum or Buzz

Speakers feed back
and howl when the
microphone volume
is turned up

Likely Cause

Amplifier not connected

Power not switched on

Amplifier power cable is faulty
or improperly connected.

Blown fuse

Signal source (mixer, Amp
instrument) is not sending

Faulty cables & connections

Microphone requires
phantom power

Excessive input signal, trying
to exceed the capabilities of
the speakers

Improper gain adjustment
or settings

Improper A/Cgounding,
ground loops

Excessively long unbalanced
cable run

Improper system gain
settings

Microphone are pointed into
the speakers

Incorrect Equalizer settings

Excessive gain

Verify that speakeris connected and that the circuit is on

Switch on power and verify that power Led is on

*Re-seat the power cable at both ends;
*Substitute a known-good power cable

*Check fuse & replace with same type "spare fuse in holder"

*Check if the signal LED indicators are lit on
*Verify that the tape or CD is playing;
*Use headphones to verify that the instrument is actually sending

an audio signal

*Disconnect and re-seat signal cables;
*Replace suspected cable with a known-good cable

The EON does not supply phantom power. Switch to a dynamic
microphone, use a battery powered microphone (if possible),
use an external phantom power supply for condenser type
microphones.

*Reduce the output level of the source;
*Turn down the level controls onthe speaker;
*Use additional EON speakers

*Make sure that the MIC / LINE switch is in the LINE(disengaged)

position;

*Reduce the level settings at speaker, Review theOwner's Manual

for your mixer and adjust controls as needed;
*Input sensitivity(gain);
*Channel faders;
*Master faders;

*"lift" audio ground by using XLR/F to XLR/M adapter on one end
*Re-route audio cables away from AC power and lightingcables.

*Use the balanced outputs(if available)of your mixer or source

equipment to drive your EON speakers.
*Use"DI"(direct injection) box to convert unbalanced equipment

output to a balanced output.

Reduce the INPUT level controls and increase the output level

of your source devices.

Move the speakers so they do not point at the microphone's
pickup pattern.

Locate the feedback frequency and reduce it using the mixer EQ
or an external equalizer.

Reduce the gain at the mixer and move the microphone closerto
the sound source.

Whattodo

9