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 relative to the EQ settings. Simply adjust the Level control accordingly.
BLEND allows you to adjust the ratio of direct instrument signal and
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.
7
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
(in position), the ground connects and unit will accept phantom power
through the XLR Output. Disengaged (out position), the ground of your stage
system and other interconnected gear is isolated from the ground of the mix-
ing 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 (in position) 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 out position for “Ground Lift” mode. If you expe-
rience hum and/or buzz with the switch in either position, there may be a
problem 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 5).
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