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SIGNAL SHAPE – The SHUTTLE
®
MAX 12.2 is equipped with 3 SIGNAL SHAPE circuits, each with a level control to
adjust the amount of level the tone shaping circuit produces.
L.F. BOOST – This lter adds low frequency peaking gain in the 35-65 HZ band range. This is especially effective
when used with a 5 string bass. The level control has a range of 0 to +7dB. This lter is unique in that it provides
compound, asymmetrical slopes critical to achieving well-controlled low frequency extension.
MID SCOOP -- Engaging this switch generates a midrange frequency cut centered at 600 Hz. The level control
adjusts the amount of cut from 0db to –15dB.
H.F. ATTACK – This lter adds high frequency peaking gain in the 2.5K – 16 KHz range. The level control has
a range of 0 to +7dB. LED indicators are provided to visually show when each lter is engaged. Each lter Q
(bandwidth) is optimized for its particular function and is different for each lter. These functions are also foot-
switchable from the 5-button footswitch. The switches on the amplier’s faceplate must be in the out position for the
footswitch to work properly.
MASTER VOLUME – The MASTER VOLUME control adjusts the overall volume of the amplier and the effects
return. Typically, best results are obtained when this control is operated between the 9:00 and 3:00 positions.
MASTER SECTION STATUS INDICATORS -
• The POWER light indicates that the amplier is ON and the low voltage power supplies are active.
• The red PROTECT LED indicates that the amp is in PROTECT mode. This LED may ash during power turn-on
and turn-off. This is normal. It will also illuminate during any internal fault condition. If this happens, turn the amp
off and consult a repair technician.
• The blue SIGNAL LED indicates that the power amplier has received signal (over several watts output) and is
performing properly.
• The Amber PEAK LED indicates that the power amp has reached maximum power. Under high output conditions it
is normal that this LED will light with the strongest pulses of the signal. Driving hard beyond this point will cause
the amplier to gradually begin audible distortion.
NOTE: The PROTECT circuit senses both AMP A and AMP B power amp modules. It is possible that if one module
goes into the PROTECT mode, the remaining power amp module will perform properly.
In an emergency situation, if the PROTECT circuit engages during use, it is possible to unplug the failed power amp
speaker cable at the amplier connection and continue on with the remaining power amp module to complete the
performance. Additionally, this amplier utilizes redundant backup preamp power supplies, so that in the unlikely
event of a power amp module failure, the backup power supply will automatically take over and supply the preamp
insuring that the remaining module and direct output signal continues to function normally.
3DPM™ --- 3 DIMENSIONAL POWER MANAGEMENT --- Our proprietary 3DPM™ technology insures greater
and more solid sounding output while retaining the feel and playability of a more traditional tube based power
amplier. When driving the power amp hard the player can feel increased heft and girth of the individual notes, while
maintaining dynamics and articulation. The result is an amplier that achieves a more 3 dimensional tone and feel,
like a tube amplier power section, without the anemic atness other amplier designs can exhibit.
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