GUIDE TO CONTROLS
PRESENCE
brings out the upper harmonic content and attack. For a
smoother high end and for clean settings, decrease to taste.
DRIVE adjusts the input sensitivity, as well as the overall amount of gain and
overdrive, similar to when the output section of a tube amp is being pushed.
BASS & TREBLE. Unlike passive controls that only cut, these active tone
controls cut or boost
±
12dB from unity gain (12 o’clock). This powerful EQ
section effectively reduces the need for a fixed frequency mid control and
enables you to achieve an extensive variety of curves --including a “mid-cut” as
well as a “mid-boost.”
Adjusting Mid-Range Content: The mid-range level is preset. Boosting Bass and
Treble yields a “mid-cut” (at 750 Hz) where the relative mid-range level is
lower than the Bass and Treble frequency levels. Cutting Bass and Treble yields a
“mid-boost” (at 750 Hz) where the relative mid-range level is higher than the
Bass and Treble frequency levels. NOTE: The overall output level will change rela-
tive to the EQ settings. Simply adjust the Level control accordingly.
BLEND allows you to blend the direct instrument signal with SansAmp
Tube Amplifier Emulation circuitry. In most cases, you will probably have this
set at maximum (100% SansAmp). For certain applications, however, such as
an ultra-transparent sound or for use with piezo pickup-equipped instruments,
you may want to blend-in some of the direct signal to achieve your desired
sound. While the SansAmp Tube Amplifier Emulation circuitry is bypassed
when Blend is at minimum, the Bass, Treble and Level controls remain active.
LEVEL adjusts the output level of both the 1/4” and XLR outputs.
PROGRAMMING THE CHANNELS
HOW TO SAVE A PROGRAM
Select a channel where you want the setting located. Set the knob controls to
taste. Double click on that channel’s footswitch and it’s saved. It’s that easy.
HOW TO FIND KNOB POSITIONING WITHIN A PRESET
When you turn a knob from its stored position, it “unlocks” and the channel
indicator LED will blink. The slower the blink, the farther away you are from
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PHANTOM POWER
Allows you to “tap into” the power of a suitably equipped mixer. As the 3-
conductor XLR sends the audio signal to the input of a mixer, the mixer sends
voltage back to the unit via the same 3 wires, eliminating the need for an
external power supply. Consult your mixer’s owner’s manual for set-up
instructions. For live and studio use, let the engineer know your SansAmp is
phantom power operable.
NOTE: Minimum 24V DC regulated phantom power supply, however, 48V DC
regulated is recommended to optimize headroom and illuminate LEDs.
PHANTOM & GROUND CONNECT SWITCH: When engaged
(depressed), the ground connects and unit will accept phantom power through
the XLR Output. Disengaged (up), the ground of your stage system and other
interconnected gear is isolated from the ground of the mixing console.
With a mixer only: If you are plugging your bass into the Bass Driver and
taking the XLR Output to a mixer --and do not have any other grounded equip-
ment connected in the setup-- you will have to engage (depress) the switch to
connect the ground and activate the phantom power.
With a mixer and bass amp: If you are going to the mixer via the XLR
and using the 1/4” Output to feed a bass amp (with its own AC ground), you
should set the switch in the up position for “Ground Lift” mode. If you experi-
ence hum and/or buzz with the switch in either position, there may be a prob-
lem with the AC outlets you are plugging into.
NOTE: If using vintage equipment without proper grounds, take extra care
connecting it to modern grounded equipment. The inadequacies of the ground
in vintage gear could result in damaging anything it is connected to.
NOTE: While operating under phantom power, we recommend keeping a 9V
alkaline battery installed at all times to avoid the previously mentioned “pops”
when lifting the ground (see Standard Audio Procedure on page 4).
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