Gallien Krueger Backline 250, Backline 115, Backline 600 Manual

Name: Gallien Krueger Backline 250
Brand: Gallien Krueger
SKU: 15288078
Rating: 4 (1 reviews)

4 (1)

Owner’s Manual

Backline 350

Backline 210

Backline 250

Backline 115

Backline 600

Backline SeiesBackline Seies

Backline Seies

Table Of Contents

Gallien-Krueger

2234 Industrial Drive

Stockton, CA 95206

phone: 209-234-7300

fax: 209-234-8420

www.gallien-krueger.com

Introduction.....................................................................

Safety Information..........................................................

Quick Start.......................................................................

Settings & Sounds............................................................

Sound Tips.......................................................................

Front & Rear Panel Controls........................................

Installation & Maintenance..........................................

Backline Combo............................................................

Tech Talk........................................................................

Specifications.................................................................

*All Features and specifications are subject to change without notice

**This list is subject to change without notice.

Table of Contents

IMPORTANT SAFETY INSTRUCTIONS.

Please read the Safety Information section on page 5 before continuing.

Backline SeriesBackline Series

Backline Series

Congratulations

Your purchase of a new Gallien-Krueger Backline product

is surely the result of much careful consideration on your

part. For our part, we at Gallien-Krueger are pleased that

you chose us, and are determined that you will be a

satisfied customer. In choosing a Backline product, you

now own an amplifier with many unique features, which

will allow you to create your own distinct sound.

To get the most out of your new purchase please take a

few minutes to read through this manual. If you are in a

hurry, we suggest you at least read through the Quick

Start and Safety Information sections before setting up

your new rig. This will help get you started and give you a

few quick tips, but is not a substitute for reading the rest of

the manual.

Your Backline unit should have come with the following

items, please check the contents of the box to ensure that

you have everything.

Included with your Backline 350/250/600 Head:

Backline 350/250/600 1

Power cord 1

Owner’s manual 1

Warranty card 1

Safety instructions sheet 1

Included with your Backline 210/115 Combo:

Backline 210/115 1

Power Cord 1

Owner’s Manual 1

Warranty Card 1

Safety Instructions Sheet 1

If your new unit did not come with all the items listed,

or if you encounter problems while setting up your new

equipment, please contact your local dealer, or GK

customer service at:

Gallien-Krueger, Inc.

2234 Industrial Drive

Stockton, CA 95206

phone: (209) 234-7300

fax: (209) 234-8420

Internet: www.gallien-krueger.com

Email: sales@gallien.com

We wish you a lifetime of good playing and remember

to always have fun!

Introduction

GK Philosophy

I have never seen the point in doing things the way

others have done them. I also have not been very

interested in following the latest fad. I am a Stanford

educated engineer who worked his way through school

as a musician. Like all musicians, I have lugged

amplifiers up stairways and into car trunks, always

wondering why these things had to be so heavy, bulky,

and hard to handle.

As I am the principal innovator at

GKGK

G K, our products

reflect my attitudes and life experiences. I don’t model

my designs after other manufacturer’s products (as

some of our competitors are proud of reciting). Instead,

I believe new and old problems are best solved with new

solutions. Having taken our own path,

GKGK

G K products

enjoy a unique, unmatched sound, allowing the artist

using them every opportunity to make an original

statement.

Having supported my products for over thirty years, I

have learned from the story they tell.

Gallien-Gallien-

Gallien-

KruegerKrueger

Krueger is a reflection of that story, and has a commit-

ment to support that legacy. Just as the products I

created thirty years ago are still telling their story, the

products we create today will be talking to us tomorrow.

We’ll be listening,

Robert Gallien

Founder & President

Backline SeriesBackline Series

Backline Series

Safety Information

Verify Line Voltage and Amperage Before

Use:

Your new Backline unit has been factory

configured for use with:

120 Volt/60Hz 15 Amp circuit for USA &

Canada.

230 Volt/50Hz 10 Amp circuit for Europe

& Australia.

100 Volt/50Hz 15 Amp circuit for Japan.

Proper AC circuit for all other countries.

Connecting the amplifier to a line with specifications

other than indicated above can create a safety and fire

hazard, and may damage the amplifier. If you have any

questions about the voltage requirements for your specific

model, or about the line voltage in your area, contact your

dealer before plugging the unit into a wall outlet.

Verify AC Circuit Capacity Before Use:

The high power output of your amplifier may require

heavy current draw under Full-Load conditions. To insure

proper performance and avoid potential safety hazards, we

recommend connection to line circuits with Amperage

specified “as above”. Connecting multiple amplifiers to

the same circuit, or connecting the amplifier to the same

circuit used by other heavy-power devices, such as high-

wattage lights, may cause circuit breakers to trip. It is

always a good idea to avoid using any audio equipment

on the same AC circuit as equipment with motors, such as

air conditioners or refrigerators. This will lessen to

possibility of power variation and electrical start-up noise

affecting your sound.

Warning: Do not disconnect or plug in the

instrument/speaker cable with the amplifier

power on. Be sure the amplifier unit is turned

off before connecting anything to it.

Do Not Use Extension Cords:

To avoid safety hazards, use only the power cord supplied

with your unit. If a replacement cord is used, make

certain that it is of consistent quality and gauge as the

original. We do not recommend using extension cords

with this product. As with all electrical devices, do not run

power cords under rugs or carpets or place heavy objects

on them. Damaged power cords should be replaced

immediately with cords meeting factory specifications.

Handle The AC Power Cord Gently:

When disconnecting the power cord from an AC outlet,

always pull the plug, never pull the cord. If you do not

intend to use the amplifier for a considerable length of

time, disconnect the plug from the AC outlet.

Mains Disconnect:

If the AC mains has to be completly disconnected, the

plug/power cord is used as the mains disconnect device

and shall remain readily operable.

Do Not Open The Amplifier Enclosure:

There are no user-serviceable components inside this

product. Opening the amplifier enclosure may present a

shock hazard, and modification to the product will void

your warranty. If liquid enters the unit, or any metal

object such as a paper clip, wire, or staple accidentally

falls inside the enclosure, disconnect the unit from the AC

power source immediately and consult an authorized

service station.

Unpacking:

The carton and packing materials used in shipping your

new amplifier were specially designed to cushion it from

the shocks and vibration that occur during transport. We

suggest that you save the carton and packing materials for

use in shipping, in the event you move, or the amplifier

needs repair.

Backline SeriesBackline Series

Backline Series

Quick Start

Your Backline 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.

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. (Backline 350/250/600 Only)

Connect your speaker cabinet to the amplifier output

marked 175W/125W/300W. Be sure not to go below the

recommended speaker load listed below. Take note also

that the speaker cabinets power capacity must be equal or

higher than the ouput power of the unit.

Minimum Recommended Speaker Load:

One 4 0hm or two 8 ohm cabinets or One 8 ohm cabinet

for

Backline 350Backline 350

Backline 350 and

Backline 600.Backline 600.

Backline 600.

For

Backline 250 Backline 250

Backline 250 minimum load impedance is 8 Ohm,

that will translate to one 8 Ohm cabinet or two 16 Ohm

cabinet.

If you are using a

GK RBH/SBXGK RBH/SBX

GK RBH/SBX series cabinet, set the

crossover switch to full range.

For

Backline 115Backline 115

Backline 115 and

Backline 210Backline 210

Backline 210, The minimum

load impedance is 4 ohms. With the internal cabinet

connected, the minimum impedance of an external

speaker cabinet that can be connected is 8 ohms

Set all EQ controls and the Boost control to 12 o’clock.

The Voicing Filter should be turned all the way down 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).

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, push the button marked

-10db in. Occasional clip light flashes while playing very

hard, is normal and should not raise any concern . 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 that the controls

on the bass guitar are all the way up. If you have a bass

with active electronics, set all controls on the bass to the

middle or flat position.

At This Point:

You should be hearing your bass quite well. You can use

the volume and Master to achieve a comfortable sound

level.

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:

The Backline Series are 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 bass specific bands of active equalization

for Precise tone control.

An adjustable voicing filter for shaping and

customizing your sound.

Balanced direct output eliminates the need for

a direct box.

Bass specific overdrive channel for all

modern sounds.

+ 11 hidden pages