Quick Start - Gallien-Krueger Backline 115 Owner's Manual

Quick Start

Your Backline Series unit is designed to be simple to
operate. All controls have a well defined purpose and are
well behaved. These directions will take you through the
basics and give you a good start for setting up your sound.
1.
Set the power switch to Off and connect the supplied power
cord from the amplifier AC receptacle to an AC power
outlet of proper voltage and power rating (see safety
information on page 5 for details).
2. (Head Only)
Connect your speaker cabinet to the amplifier output
marked 125W. Be sure not to exceed the recommended
speaker load listed below.
Maximum Recommended Speaker Load:
One 8 Ohm cabinet.
If you are using an RBH series cabinet, set the crossover
switch to full range.
3.
Set all EQ controls and the Boost control to 12 o'clock.
The Voicing Filter should be turned all the way down (or
switched off) to get a flat response. Set the Gain, Level-A,
Level-B and Master Volumes at 0. Set the A/B switch to off
(Channel A).
4.
Using an instrument cable, connect your bass to the Input
jack and turn the power switch on, set the master control
to 3 o'clock, slowly bring the Level-A volume up and play.
If the clip LED flashes excessively (115 & 250BL), push
the button marked - - - - - 10db in. If distortion is heard on the
Backline 112 or 110, push the button marked - - - - - 10db in.
This will prevent you from overdriving the preamp.
Occasional clip light flashes while playing very hard is
okay. Do not turn the volume control in the input section
past 1 o'clock unless you want an overdrive effect. If you
have a bass with passive electronics make sure the
controls are all the way up. If you have a bass with active
electronics, turn all of the EQ controls on the bass to the
middle or flat position.
Backline Series Backline Series Backline Series
Backline Series Backline Series
At This Point:
You should be hearing your bass quite well. You can use
the volume and Master to achieve a comfortable sound
level.
5.
Now you are ready to check out the overdrive feature
(Channel-B). Push in the Level A/B button. The over-
drive LED should light. Set the Gain control to 9 o'clock
as a starting point. Slowly raise the Level-B volume to the
desired sound level. This will give a slightly distorted
sound. Raising the gain will add more distortion and
sustain. (See Sound Tips for more detail).
Characteristics of the Backline Series:
The Backline Series is a flexible, user-friendly state-of-the-
art bass series, designed to deliver maximum perfor-
mance. This is accomplished through these important
.
features:
Extremely high current power supply and
power amp circuitry, gets the sound
.
out of your head.
Four(250BL & 115), Three(112 &110)bass
specific bands of active equalization for
.
precise tone control.
An adjustable voicing filter (switched voicing
for 112 &110) for shaping and customizing
.
your sound.
Balanced direct output eliminates the need
.
for a direct box.
Bass specific overdrive channel for all
modern sounds.
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