Gallien-Krueger MB150S-112III Посібник користувача - Сторінка 9

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Gallien-Krueger MB150S-112III Посібник користувача

Sound Advice

Input Volume vs. Output Level:

The Input Volume adjusts the signal as it enters

the preamp section. Changes to it will have an

impact on the Send jack, Boost control, and the

Direct Output if it is set to Post mode. Depend-

ing on the output signal from your bass, setting the

volume below 1 o'clock produces a cleaner signal

while setting it above 1 o'clock produces a subtle

overdrive effect.

The Output Level adjusts the volume of the Internal

Power Amplifier, after the preamp (Post EQ). For

most playing situations, the Output Level is set

between 12 and 3 o'clock. Set it above 3 o'clock

for maximum power situations.

Note: Be careful not to overdrive the Internal Am-

plifier. This creates a square wave (fully clipped

signal) which may cause damage to your speaker

regardless of it's power rating.

Contour:

Increasing the Contour level will scoop out mid-

range frequencies while boosting the highs and

lows. The sound is unique to GK and unavailable

on any other bass amp. Lower contour settings

are recommended for midrange clarity at higher

playing levels.

Presence:

The Presence control is great for slap style playing

or if you need to add a little extra high-end sparkle

to your tone. It's particularly useful if your strings

are old and dull sounding.

Equalization:

The Equalizer is used to fine tune your sound.

When changing the settings, try making only subtle

adjustments at first. These are active circuits, and

small changes can make a big difference.

Boost Control:

The Boost Control adjusts the Valve Effect (See

Tech Talk for more info). Turning up the Boost

will add a little growl to your tone. This is an

unmistakable, highly sought after, GK trademark

sound. Raising the Boost

MicroBass-III Series

while lowering the Master will add more growl

while keeping the sound level relatively even. The

'growl' is actually a small amount of even order

harmonic distortion. For most playing situations,

start with the Boost at 12 o'clock. Reduce for a

cleaner sound, or increase for more growl. When

overdriving the Preamp, increase the Boost control

to fatten up the tone.

Direct Out:

Your GK amplifier includes a low noise, high qual-

ity balanced Direct Out for connection to PA and

recording consoles. The MBS is set for Pre EQ.

The MBE has two Direct Outputs which can be set

with one in Pre and one in Post simultaneously, or

both in Post Stereo L/R to accommodate the built

in stereo chorus. Both the MBE and the MBS in-

clude a Ground (Gnd) Lift switch to remove hum

and buzz when connecting to equipment powered

by a different ground system.

When in Pre Output mode, the signal is fed directly

from our low noise, high headroom, FET input

stage to the Direct Output. This provides a low

noise output superior to external direct boxes and

impedance transformers. Using Pre-Output mode,

the Direct Output signal is only effected by the -

14dB Pad and Tuning Mute controls. This allows

you to adjust your tone and volume on stage without

changing the Direct Output signal level.

Post-Output mode sends the fully effected preamp

signal to the Direct Out. This gives you complete

control over your Direct Out tone and volume

and has the added benefit of really annoying the

sound guy.