Ampeg SVT-VR User Manual

SVT-VR Bass Guitar Amplifier
5
The Front Panel
1. ONE: (The Channel One Input jacks):
The signal output from an instrument
or a line-level signal may be connected
to this 1/4" input by means of a
shielded instrument cable. Either the
bright or normal jack may be used.
The bright jack enhances the high
frequencies of the input signal. The
signal at these jacks is sent into the
channel one preamp section [tone
and volume controls].
2. TWO: (The Channel Two Input jacks):
The signal output from an instrument
or a line-level signal may be connected
to this 1/4" input by means of a
shielded instrument cable. Either the
bright or normal jack may be used.
The bright jack enhances the high
frequencies of the input signal. The
signal at these jacks is sent into the
channel two preamp section [tone
and volume controls].
3. VOLUME: Use this control to adjust the
output level of channel one.
4. TREBLE: Use this to adjust the high
frequency level of channel one. This
provides up to 12 dB of boost, or
12 dB of cut at 4 kHz. The high
frequency output is flat at the center
position.
5. MIDRANGE: Use this to adjust the
midrange frequency level of channel one.
This provides up to 20 dB of boost, or
20 dB of cut at the selected frequency
[8]. The midrange frequency
output is flat at the center position.
Rotate the control counter-clockwise
for a “contoured” sound (more distant,
less midrange output) or clockwise for a
sound which really cuts through.
6. BASS: Use this to adjust the low
frequency level of channel one. This
provides up to 12 dB of boost, or
12 dB of cut at 40 Hz. The low
frequency output is flat at the center
position.
7. ULTRA-HI: This switch, when engaged
[right side down], enhances the amount
of high frequency output of channel one.
The amount of boost is dependent on
the setting of the volume control [3].
8. 1•2•3: This switch selects the
frequency that will be affected by the
midrange control [5]. The available
frequencies are 220 Hz [left side of
the switch engaged], 800 Hz [switch
in the center position], or 3 kHz (right
side of the switch engaged].
9. BASS-CUT/OFF/ULTRA-LO: Engaging
the left side of this switch decreases
the low frequency output of channel
one. Engaging the right side of this
switch enhances the low frequency
output of channel one. The switch is
inactive in the center position.
10. VOLUME: Use this control to adjust the
output level of channel two.
1 2 3 4
7 8 9 13 14
5 6 10 11 12 15 16

Ampeg SVT-VR Specifications

Output Power

output power rating	300 Watts RMS minimum continuous @ <5% THD into 2 or 4 ohms, 0.25V RMS input

Tone 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

signal to noise ratio channel one	75dB typical
signal to noise ratio channel two	75dB typical

Tube Complement

12AX7 tubes	4
12AU7 tubes	4
6550 tubes	6

Power Requirements

power requirements 120VAC	60Hz, 400VA
power requirements 100/115VAC	50/60Hz, 400VA
power requirements 230VAC	50/60Hz, 400VA

Size and Weight

width	24”
height	11-1/2”
depth	12-3/4”
weight	85 lbs