Genz Benz Shuttle 3.0 Owner`s Manual
OWNER’S MANUAL
PRODUCT DESCRIPTION – The SHUTTLE 3.0® bass amplier has been designed with our unique ULTRA
LIGHT unied design process, yielding a 300 watt professional, high powered, tour-class, bass guitar amplier
weighing only 2.75 pounds! The SHUTTLE 3.0® is equipped with a ¼” unbalanced instrument input, input stage
clip detector, mute switch with LED indicator, FET preamp with extended range variable input gain, 3 switched signal
shape lters with LED indicators, 3 band active equalization with sweepable midrange frequency, master volume
control, proprietary output limiter, ¼” tuner output, aux. input, effects loop, balanced direct out with ground lift/prepost/mic-line switches, headphone output, and a 1/4” and Neutrik NL-4 “Speak-On”™ speaker jack.
The power amp is a powerful, lightweight Class D design and is supported by a state-of-the-art digital Switch Mode
Power Supply (SMPS), which does away with the weight of a traditional power transformer. The SHUTTLE 3.0®’s
power supply is auto-self conguring from 100 - 240 volts, lending itself well to international touring players.
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FRONT PANEL
INPUT – The SHUTTLE 3.0® is equipped with a standard ¼” unbalanced input. The input sensitivity range is from
80 mV to 1.6 volts. The input impedance is >500K ohms. The input stage contains a precision high order active high
pass lter (more effective and less intrusive than the more common 6 dB lters) and an “RFI” lter (radio frequency
interference) to eliminate unwanted noise. The input gain stage consists of a feedback type variable gain circuit that
provides wide range, continuously variable gain with minimal noise. The preamp contains a FET input amp circuit
based on our highly regarded GBE series touring ampliers.
INPUT SIGNAL MUTE SWITCH – With this mute switch, you can place the amplier (and Direct Output) in standby
mode between sets, without having to change any of your amp settings. This feature can also be used for silent
tuning since the Tuner Out stays active when the mute is engaged. A red LED indicates when the Mute is active.
PREAMP VOLUME CONTROL – The preamp is designed to accept a wide range of input levels. This control sets
the input sensitivity of the preamp to the output of your bass. The volume of the signal is also controlled by the
Master Volume control, and is sampled after the eq stage in the event large amounts of eq jeopardize clean preamp
operation. If the red overload “O/L” LED ashes, the FET preamp stage is beginning to be overdriven. To retain a
clean tone, increase Master Volume control and reduce the Preamp Volume control to eliminate input preamp overload. The control should be set so that the O/L LED just ashes with the hardest notes played or not at all. A “hotter”
Active bass will require that this control is run lower than when using a bass with Passive pick-ups.
“O/L” LED – This “Over-load” LED shows the operating status of the preamp stage. When this LED ashes, overdriving of the input gain stage is occurring. Adjusting the Preamp Volume control will affect the over-load condition.
SETTING YOUR INPUT SIGNAL – Use the following guidelines to set your amplier input stage for the type of bass
used and your personal playing style.
·Set your instruments controls (volume and tone) where you normally prefer to run them.
·Begin with the Channel Volume setting at “0” and your amplier EQ positions centered at 12 o’clock.
·Begin turning the Volume control up to a level in which the O/L LED is just illuminating with your hardest
notes played. It is okay for the O/L LED to ash somewhat BUT it should not be on constantly. Passive
basses may not light the LED unless turned all the way up. This is not necessary, a setting of 12 o’clock is
usually recommended.
·Now set your Master volume settings for the desired output level (loudness) that you wish to produce.
·Next turn your attention to the EQ section and make the adjustments for your desired tone. Because this is
an active EQ network any large settings of cut or boost will affect the gain level of the preamp and the O/L
lights at the input stage.
·After setting your EQ it may be necessary to go back and adjust your input level down accordingly. It
should be noted that the Global Signal Shape circuits will not affect the input level BUT will affect the Master
output level and LIMIT indicator if used with extreme settings.
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