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BA500 Bass Amp Combo
Troubleshooting
In the unlikely event that your BA500 should stop working properly (or just stop working), take a few minutes to trou-
bleshoot it before you call for service. You can save yourself a lot of time and sometimes money by doing it yourself, and
often the cure for the problem is something quite simple.
If the problem isn’t covered above, or if the steps lead you here, then contact your Ampeg dealer for service infor-
mation. Also, you should refer your amp to an authorized service center for servicing if it gets dropped, has liquid spilled
into it, or sustains damage to its power cord. Regular cleaning and maintenance by your local Service Center will help
extend the amplifier’s useful life.
System Block Diagram
NO SOUND
LEDs LIGHT
POOR SOUND
Check bass, cables
Check speaker(s)
Replace speaker(s)
POOR SOUND
LEDs DON'T LIGHT
Check AC outlet
NO SOUND
NO HUM HUM
Listen for hum
NO CHANGE
SOUND OK
SOUND OK
POOR SOUND SOUND OK
SOUND OK
Check amp controls, check
for signal from bass
Check power cord,
fuse, power switch
Check house fusebox
or circuit breaker
SPEAKER(S) OK,
POOR SOUND
SPEAKER(S)
DEFECTIVE
Check speaker Unplug bass,
touch tip of cable
Speaker OK
Replace cable
NO CHANGE
SEE BELOW SEE BELOW
NO OUTLETOUTLET OK
OK
INPUT
PAD
MUTE
POST
PRE
-20dB PAD
LIMIT
COOLING
FAN
POWER AMP
PROTECTION
RELAY
Thermal Shutdown,
Low Voltage,
DC Protect
EFFECTS
LOOP
SEND
BAL.
OUT
GAIN
BASS
MASTER
ULTRA MID
TREBLE
PEAK/MUTE
LED
9 BAND
GRAPHIC
EQ
EFFECTS
LOOP
RETURN
TUNER
OUT
PREAMP
OUT
EQ
ON
SPEAKER
OUT
POWER AMP
IN
SPEAKER
OUT
SPEAKON
JACK
1+
2+
1- 2-
LIMIT
LED