Genz-Benz MAX 12.2 - Manual (Page 4)

LOW FREQUENCY CONTROL – The LOW frequency EQ section is an 80 Hz shelving curve with 15dB of cut or boost.
LOW-MID FREQUENCY FILTER -- The center frequency of the LOW-MID filter is continuously user adjustable from 120
Hz to 2 KHz with a single control. The LOW-MID GAIN control sets the amount of level (cut or boost) for the specific
frequency set by the LOW-MID FREQUENCY control.
HIGH-MID FREQUENCY FILTER -- The HIGH-MID frequency is continuously user adjustable from 300 Hz to 5 KHz with
a single control. The HIGH-MID GAIN control sets the amount of level (cut or boost) for the specific frequency set by the
HIGH-MID FREQUENCY control.
HIGH FREQUENCY -- The HIGH frequency EQ section is a 4 KHz shelving curve with 15dB of cut or boost.
NOTE: These equalizer networks are similar to those found on professional sound consoles and are very useful tools.
These active equalizers are very wide response type filters and a little “tweaking” goes a long way.
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. LED indicators are provided to visually show when each
filter is engaged. Each filter Q (bandwidth) is optimized for its particular function and is different for each filter. These
functions are also footswitchable from the 5-button footswitch. The switches on the amplifier’s faceplate must be in the
out position for the footswitch to work properly.
L.F. BOOST – This filter 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 filter 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 filter adds high frequency peaking gain in the 2.5K – 16 KHz range. The level control has a range of
0 to +7dB.
MASTER VOLUME – The MASTER VOLUME control adjusts the overall volume of the amplifier 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 amplifier 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 flash 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 amplifier 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 amplifier 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 amplifier connection and continue on with the remaining power amp module to complete the
performance. Additionally, this amplifier 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 amplifier. 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 amplifier that achieves a more 3 dimensional tone and feel, like a tube amplifier power
section, without the anemic flatness other amplifier designs can exhibit.
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