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 amp's power
cord, circuit breaker,
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 POWEROUTLET OK
OK
SVT-4 PRO Bass Guitar Amplifier
16
Rack Mounting
When mounting the SVT-4 PRO into a rack, the four bottom feet should be removed
to maintain the three rack space height of the amplifier. Be sure to keep the feet and their
attachment bolts for future use. If the feet are reinstalled, never use screws which will
protrude farther into the amplifier than the original hardware.
The rack must be a high quality enclosure capable of securely supporting the weight
of the amplifier. Tighten the mounting screws securely through the amplifier’s face plate,
into the rack rails. Check the rack and mounting screws occasionally to ensure a continually
safe and secure installation.
Troubleshooting
In the unlikely event that your SVT-4 PRO should malfunction, take a few minutes to
troubleshoot it before you call for service. You can save yourself time and 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 information. Also, you should refer the amp for servicing if it
gets dropped, has liquid spilled into it, or sustains damage to its power cord.
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