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Ampeg SVT-4 PRO Owner's Guide

Ampeg SVT-4 PRO
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9
SVT-4 PRO Bass Amplifier
1+ HOT, 1
BIAMP HIGH
INPUT MONO BRIDGE INPUT
BIAMP LOW/
41 42 43 44 45 46 47 48 49
32 33 34 35 36 37 38
40,41,44,45. TRANSFORMER BALANCED LINE OUTPUT
JACKS: These jacks supply a balanced signal for connec-
tion to a house mixing board, recording console or external
amplifier(s). The signal level at these jacks is controlled by
the front panel Line Out Level control (#16) and is governed
by the Stereo/Mono switch (#42) and the Pre/Post switch
(#43).
42. LINE OUT STEREO/MONO SWITCH: This switch is
active only when the Pre/Post switch (#43) is at the “post”
position (switch depressed). When active, this switch gov-
erns the signals at the Line Out jacks as follows:
In the Stereo Mode (switch out):
•The Channel A line out jacks (#44,45) supply a signal
from the Effects Loop Return Right/A jack (#47).
•The Channel B line out jacks (#40,41) supply a signal
from the Effects Loop Return Left/B jack (#46).
In the Mono Mode (switch depressed):
•The Channel A line out jacks (#44,45) supply a “wet”
mono preamp signal – any external effects are applied
to this signal. The Effects Loop Left and Right returns
are summed together, creating a mono effects signal.
•The Channel B line out jacks (#40,41) supply a “dry”
mono preamp signal – no external effects are applied
to this signal.
43. LINE OUT PRE/POST SWITCH: The signal at the Line
Out jacks can be set to either Pre or Post EQ with this
switch. With the switch in the OUT position, the signal at the
jacks will be Pre-EQ. This is a direct output not affected by
any EQ or boost settings. With the switch depressed, the sig-
nal is Post-EQ and is controlled and modified by the tone
controls, Graphic EQ, the Master level control, the effects
loop and the Line Out Stereo/Mono switch (#42).
46. EFFECTS LOOP RETURN LEFT/B: When using stereo
effects, connect the effect’s left channel output into this jack.
Do not use this jack with mono effects.
47. EFFECTS LOOP RETURN RIGHT/A (MONO): When
using stereo effects, connect the effect’s right channel output
into this jack. When using mono effects, connect the effect’s
output into this jack.
48. EFFECTS LOOP SEND: When using an external signal
processor, connect the INPUT of the effect to this jack using
a shielded instrument cable to send the post-EQ signal to the
effect for processing.
49. TUNER OUT: This jack is provided for connection to an
electronic tuner and is always “live,” even when the Mute
switch (#3) is engaged, allowing for “silent tuning” as well as
a monitor feed which stays hot even when the house mix is
muted.
NOTE: The effects loop (#46/47) may be bypassed by the
front panel switch (#27), or by the use of a footswitch.

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Ampeg SVT-4 PRO Specifications

Output Power IconOutput Power
output power rating mono-bridged at 4 ohms1600 Watts
output power rating mono-bridged at 8 ohms1200 Watts
output power rating 2 x at 2 ohms900 Watts
output power rating 2 x at 4 ohms625 Watts
output power rating 2 x at 8 ohms350 Watts
Tone Control Range IconTone Control Range
bass control range±12dB @ 50Hz
midrange control range±15dB @ selected frequency
treble control range+14dB / -19dB @ 5kHz
Graphic EQ IconGraphic EQ
graphic eq level±10dB
graphic eq range 33Hz±15dB
graphic eq range 80Hz±8dB
graphic eq range 150Hz±8dB
graphic eq range 300Hz±8dB
graphic eq range 600Hz±8dB
graphic eq range 900Hz±8dB
graphic eq range 2kHz±8dB
graphic eq range 5kHz±9dB
graphic eq range 8kHz±10dB
Switches IconSwitches
bright switch+6dB @2kHz
ultra high switch+6dB @ 5kHz
ultra low switch+2.5dB @ 50Hz -12dB @ 560Hz +1.5dB @ 5kHz
General Specifications IconGeneral Specifications
signal to noise ratio75dB typical
compression ratio10:1
tube complement12AX7 (3)
Power Requirements IconPower Requirements
domestic power requirements120VAC, 60Hz, 1.4kVA
export power requirements 100/115VAC50/60Hz, 1.4kVA
export power requirements 230VAC50/60Hz, 1.4kVA
Size and Weight IconSize and Weight
width19/17.4”
height with feet5.6”
depth15.5”
weight39.5 lbs

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