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SVT-CL
4
The Front Panel Controls and Their Use
1. 0dB INPUT: This jack accepts
the signal from a passive instru-
ment through a shielded instru-
ment cable.
2. -15dB INPUT: This jack accepts
the signal from an active instru-
ment through a shielded instru-
ment cable.
3. GAIN: This control adjusts the
basic level of signal in the preamp.
4. ULTRA HI: This switch boosts
high frequencies.
5. ULTRA LO: This switch, when
engaged, provides emphasis to
the low frequencies by boosting
the low frequencies and selectively
cutting the mid frequencies.
6. BASS: This is the primary low
frequency control. It allows for
12dB of cut or boost at 40Hz.
7. MIDRANGE: This is the primary
midrange control. It allows for
20dB of cut or 10dB of boost at the
center frequency selected by the
Frequency control (8).
8. FREQUENCY: Allows you to
select the center frequency for the
Midrange control (7), giving you a
choice of five “voices” for the
Midrange. The center frequencies
are (from left to right) 220Hz,
450Hz, 800Hz, 1.6kHz and 3kHz.
9. TREBLE: This is the primary
high frequency control. It allows for
20dB of cut or 15dB of boost at
4kHz.
10. MASTER: This controls the
signal level to the power amp and
therefore the overall listening level.
It also controls the level to the
Preamp Out jack (20).
11. STANDBY/POWER/FAULT
INDICATOR LED: This is a multi-
function LED. In Standby Mode, it
glows red. In the On mode (when
the high voltage comes on) it glows
green. If it does not turn green in
the On mode, there is no high volt-
age present and the unit needs
servicing. If the amp detects a fault
in the power tube circuit, the high
voltage is turned off and the LED
flashes between red and green.
This usually indicates a bad power
tube. The amp will remain in this
condition until the unit is turned off.
12. STANDBY: The Standby mode
allows the tubes to warm or remain
warm without high voltage being
applied to them. This extends tube
life. This switch should be OFF
when first turning the amplifier on.
Allow the unit to warm up for 20
seconds before switching to the
ON position. During short periods
of non-use, the amp should be put
into Standby mode.
13. POWER: This supplies AC
power to the unit. Turn this switch
on before turning on the Standby
switch (#12), as explained above.
This switch must be turned off to
reset the amp after a Fault condi-
tion.
INPUTS ULTRA HI/LO
LO
0dB
GAIN
-15dB
HI
BASS MIDRANGE FREQUENCY TREBLE MASTER
STANDBY POWER
STANDBY/
POWER/
FAULT
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