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Ampeg SVT-VR User Guide

Ampeg SVT-VR
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11
Troubleshooting
In the unlikely event that your SVT-VR 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 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 informa-
tion. Also, you should refer your amp to an authorized service center 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 useful life
of the amplifier.
System Block Diagram
SVT-VR Bass Amplifier
GND
LIFT
PRE
POST
TRANSFORMER
BAL. OUT
BRIGHT
TWO
NORMAL
MID-
RANGE
PREAMP
OUT
POWER
AMP IN
SLAVE
OUT
123
BRIGHT
ONE
NORMAL
VOLUME
ULTRA
HIGH
ULTRA
LOW
TREBLEBASS
LEVEL
VOLUME
ULTRA
HIGH
ULTRA
LOW
TREBLEBASS
BALANCE
(SPEAKO
N
JACK)
SPEAKERS
1+
2+
1- 2-
POWER
AMP
BIAS
1
BIAS
2
4 OHM
2 OHM

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Ampeg SVT-VR Specifications

Output Power IconOutput Power
output power rating300 Watts RMS minimum continuous @ <5% THD into 2 or 4 ohms, 0.25V RMS input
Tone Control Range IconTone Control Range
channel one treble control range±12dB @ 4kHz
channel one midrange control range±20dB @ 220, 800, or 3kHz
channel one bass control range±12dB @ 40Hz
channel one ultra high control range+15dB @ 8kHz (volume @ 50%)
channel one ultra low control range-20dB @ 600Hz
channel one bass cut control range-20dB @ 40Hz
channel two treble control range±12dB @ 4kHz
channel two bass control range±12dB @ 40Hz
channel two ultra high control range+15dB @ 8kHz (volume @ 50%)
channel two ultra low control range-11dB @ 40Hz (relative)
Signal and Noise IconSignal and Noise
signal to noise ratio channel one75dB typical
signal to noise ratio channel two75dB typical
Tube Complement IconTube Complement
12AX7 tubes4
12AU7 tubes4
6550 tubes6
Power Requirements IconPower Requirements
power requirements 120VAC60Hz, 400VA
power requirements 100/115VAC50/60Hz, 400VA
power requirements 230VAC50/60Hz, 400VA
Size and Weight IconSize and Weight
width24”
height11-1/2”
depth12-3/4”
weight85 lbs

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