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Owner’s Manual
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Table of Contents
Safety Information............................................................
Introduction.......................................................................
Setup & Maintenance......................................................
Controls.............................................................................
Sample Settings................................................................
Tech Talk..........................................................................
Specifications...................................................................
*All Features and specifications are subject to change without notice
**This list is subject to change without notice.
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Safety Information
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Please read all enclosed safety precautions, before
connecting or operating this product.
Verify Line Voltage and Amperage Before Use:
Your new MicroBass Series amplifier has been factory configured for use with:
120 Volt/60Hz 15 A circuit for USA/Canada.
230 Volt/50Hz 10 A circuit for UK/Australia.
240 Volt/50Hz 10 A circuit for Europe.
Safety Information
100 Volt/50Hz 15 A circuit for Japan.
220 Volt/50Hz 10 A circuit for Korea.
Connecting the amplifier to a line with specifications
other than indicated above can create a safety or 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 the possibility of power variation and electrical start-up noise
affecting your sound.
Connecting to AC Power:
When setting up, make certain that the AC plug is
easily accessible. If mounting in a rack, ensure that
the AC mains can be easily disconnected by a plug
or by an all-pole disconnect switch on or near the
rack.
Disconnect When Not In Use:
If you do not intend to use the amplifier for a considerable length of time, disconnect the plug from
the AC outlet. Just switching the unit off does not
mean that it is fully disconnected from the AC Mains.
To isolate the unit from the AC mains, you must
disconnect the power cord from the unit and the AC
outlet. When disconnecting the power cord always
pull from the plug, never pull from the cord.
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 specifically 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.
AC Power Cord:
To avoid safety hazards, use only the power cord
supplied with your unit. If a replacement cord is
needed, make certain that to use a standard IEC compliant cord. Damaged power cords should be replaced
immediately.
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Congratulations
Your purchase of a new Gallien-Krueger Backline
Series 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 Series product, you
now own a combo with many unique features,
which will allow 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 section 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 amplifier should have come with the following items, please check the contents of the box to
ensure that you have everything.
Included with your Backline Combo:
Backline 110 or 112 1
Power cord 1
Owner’s manual 1
Warranty card 1
Safety instructions sheet 1
Always Listening
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 GK, 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, GK 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-Krueger is a reflection of that story, and
has a commitment 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,
Introduction
If your Backline Series combo 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 us as soon as possible.
Gallien-Krueger, Inc.
2234 Industrial Drive
Stockton, CA 95206
phone: (209) 234-7300
fax: (209) 234-8420
Internet: www.gallien-krueger.com
Email: info@gallien.com
We wish you a lifetime of good playing and
remember to always have fun!
Robert Gallien
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Setup & Maintenance
Setup: To insure proper operation and to avoid
potential safety hazards, place the unit on a firm,
level surface. Do not plug or unplug the instrument
or speaker cable while the amplifier power is on.
Rack-mounting this unit is not recommended.
Heat & Ventilation: For proper ventilation, make
sure there is at least 8 inches (20cm) of clearance
around the sides, top, back and front of the amplifier.
Avoid using in extremely hot or cold locations and
areas that are exposed to direct sunlight, or near
heating equipment. The heat sink fins and ventila-
Setup & Maintenance
tion slots that form part of the enclosure are specially designed to displace heat generated by the
amplifier. Placing other electronic equipment near
these heat-dissipation systems may possibly affect
the long-term reliability of both your amplifier and
the other equipment.
Moving the Unit: Before moving the unit, be
certain to disconnect all cables. Make sure that you
disconnect the unit from the AC outlet. If Traveling
with the unit frequently, we recommend a road case
or gig bag to protect it from scratches and road wear.
Quick Start
The Backline 110/112 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 cable from the amplifier AC receptacle to an AC power outlet of proper voltage and
power rating (see safety information on page 8 for
details).
2. 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)
3. Using an instrument cable, connect your bass to
the Input jack and turn the power switch on and play.
If the clip LED flashes excessively, push the button
marked -10db in. This will prevent you from
overdriving the preamp. Occasional clip light
flashes occurring while playing very hard is okay.
Cleaning & Maintenance: Clean only with a dry
cloth. Never use benzene, thinner, alcohol, or other
volatile cleaning agents. Do not use abrasive
cleaners, as they may damage the finish of metal
parts. Avoid spraying insecticides near the unit. No
other maintenance should be necessary.
Speaker Configurations:
Backline 112: One 8 Ohm 12" speaker
Backline 110: One 8 Ohm 10" speaker
To drive an external cabinet, the combo’s internal
speaker can be disconnected by unplugging the
speaker cable connected to the combo’s back
panel.
Maximum recommended load with the internal
speaker disconnected:
Backline 112: One 8 Ohm cabinet.
Backline 110: One 8 Ohm cabinet.
4. Set the master control to 12 o’clock and slowly
bring the Level-A volume up. Do not turn the
volume control in the input section past 12 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.
At This Point:
You should be hearing your bass quite well. You
can use the volume and Master to achieve a
comfortable sound level. Remember: If you need
more volume, turn up the Master control first.
5. Now you are ready to check out the overdrive
feature (Channel-B). Push in the Level A/B button.
The overdrive 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).
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Controls
Front Panel ControlsFront Panel Controls
Front Panel Controls
Front Panel ControlsFront Panel Controls
1-Input:1-Input:
1-Input: A standard ¼” input jack.
1-Input:1-Input:
2--10dB Pad:2--10dB Pad:
2--10dB Pad: Press in for active basses.
2--10dB Pad:2--10dB Pad:
3-Channel A/B Switch:3-Channel A/B Switch:
3-Channel A/B Switch: Switches between the overdrive
3-Channel A/B Switch:3-Channel A/B Switch:
channel and the normal channel. Can be activated with an
optional footswitch.
4-Gain: 4-Gain:
4-Gain: Controls the amount of overdrive in the “B”
4-Gain: 4-Gain:
channel. At low settings it provides a smooth distorted
sound. At high levels it will provide full saturation with
long sustain.
5-Level-B:5-Level-B:
5-Level-B: Adjusts the output level of the Overdrive
5-Level-B:5-Level-B:
channel.
6-Level-A: 6-Level-A:
6-Level-A: Sets preamp gain after the input stage.
6-Level-A: 6-Level-A:
7-Contour: 7-Contour:
7-Contour: Cuts the mid-range frequencies while boosting
7-Contour: 7-Contour:
lows & highs.
8-T8-T
reble:reble:
8-T
reble: Boost and cut at 7kHz+14dB shelving type. Add
8-T8-T
reble:reble:
or remove edge and definition.
9-Mid: 9-Mid:
9-Mid: Boost and cut at 250Hz +6dB -10dB, “Q Opti-
9-Mid: 9-Mid:
mized,” band pass type. Works on the main body of your
sound.
10-Bass: 10-Bass:
10-Bass: Boost and cut at 60Hz +10dB, shelving type.
10-Bass: 10-Bass:
Controls low end punch.
11-Master:11-Master:
11-Master:
11-Master:11-Master:
12-Mix:12-Mix:
12-Mix: Use to plug in a CD player of a second instrument
12-Mix:12-Mix:
for teaching.
13-A/B:13-A/B:
13-A/B: ¼” Jack for insertion of standard single pole foot
13-A/B:13-A/B:
switch. It Switches from channel “A” to “B”. The “A/B”
switch must be out for this function to operate.
14-Power/Protect LED:14-Power/Protect LED:
14-Power/Protect LED: The LED turns red for five seconds
14-Power/Protect LED:14-Power/Protect LED:
while the amp powers up then turns green when the amp is
ready. Should the amp experience a fault (over heat, over
current) The amp will mute and this LED will go red until
the condition is corrected.
Rear Panel ControlsRear Panel Controls
Rear Panel Controls
Rear Panel ControlsRear Panel Controls
15-Power Switch: 15-Power Switch:
15-Power Switch: Turns the amplifier on or off.
15-Power Switch: 15-Power Switch:
16-AC Input: 16-AC Input:
16-AC Input: Standard IEC receptacle.
16-AC Input: 16-AC Input:
17-Line Out: 17-Line Out:
17-Line Out: Sends a line level signal for use with a direct
17-Line Out: 17-Line Out:
box or to a second amplifier.
18-Phones: 18-Phones:
18-Phones: When using headphones, unplug the speaker
18-Phones: 18-Phones:
cable from the back of the amplifier.
19-Speaker Out: 19-Speaker Out:
19-Speaker Out: It delivers 70 watts into 8 Ohms. Lower
19-Speaker Out: 19-Speaker Out:
impedances should not be used. Impedances higher than
8 Ohms are acceptable. No damage will result from
operating the amplifier with the speakers disconnected.
Controls output level of the amplifier.
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Sample Settings
The Backline 110/112 is versatile in its sound and
tone. Below are a few suggested amp settings that
can be used as starting points to define your own
sound.
Note: the Gain/Overdrive settings will vary according to the output of your bass.
Sample Settings
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Tube Style Grunge:
CH A/B IN CONTOUR IN
Insane Gain:
CONTOUR IN
CONTOUR IN
Deep Bass:
Slap:
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Tech Talk
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Characteristics of the Backline 110 & 112
The Backline 110/112 is a flexible, user-friendly
state-of-the-art bass amplifier designed to deliver
maximum performance. This is accomplished
through these important features:
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High current power supply and power amp
circuitry, for a quick and punchy responce.
.
Three band active equalization for precise
tone control.
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Mid-Contour Shaping
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Switchable overdrive channel designed
specifically for bass.
High Current Capability:
When a power amplifier is pushing a speaker cone
and it needs to reproduce a high-power transient like
a string slap, the amp must be able to deliver a high
current pulse to maintain cone control. If the
amplifier can’t do this it simply cuts the transient
off, producing an unresponsive less out front sound.
Creating these high current pulses requires extra
power devices (four times the current required to
deliver its rated power), larger supply capacitors,
and intelligent protection logic. GK is the only bass
amp manufacturer that goes to the trouble and
expense to make this happen and it is a big reason
why GK amplifiers sound louder and cleaner than
other brands at the same power rating.
Active Equalization:
Standard tone controls and graphic equalizers give
you plenty of variation, but they don’t provide what
the instrument really needs. In fact, graphic equalizers are intended for room equalization and make
poor instrument equalizers. The GK equalizer
reflects 30 years of development and refinement and
is unique to the industry. Each section is a special
circuit optimized to perform a Bass specific job in
its operation range. These sections are wired in
series so they add to one another without creating
unmusical peaks or valleys. The result is an equalizer that is easy to use and sounds natural at any
setting.
Contour:
The Contour is based on the same contour circuit as
the 800RB. When engaged, it scoops out the mid
frequencies while emphasizing the lows and
highs.
Overdrive:
The Overdrive channel in your Backline amplifier provides truly distinct distortion and sustain
sounds. It is not a simple clipping circuit but
utilizes FET’s connected in our exclusive
G.I.V.E. configuration. This is an added flexibility unheard of in this class of product.
The Valve Effect:
As in all GK amplifiers, the Backline amplifier incorporates what we call the Valve Effect, or
G.I.V.E(Gate Induced Valve Effect). We use field
effect devices with the gate biased in such a way
that emphasizes the optimum harmonic content of
the signal. Working in concert with our unique Four
Band Active Equalizer, and three stage Voicing Filter
Section, the Valve Effect produces a consistently
pleasing bass tone.
Intelligent Protection Circuitry:
The Backline Series’ protection circuitry constantly monitors for unsafe operating conditions
such as short circuits, miswired speaker cables,
blown speakers, improper ventilation and incorrect speaker configurations. In addition, protection is provided during power up/power down.
If the Backline unit senses any unsafe operating
conditions, the output signal is immediately
muted and the power light changes from Green
to Red. The amplifier will remain muted until
the fault is removed. If the protection circuit
activates while playing, turn the amplifier off
and check the amplifier speaker output connections. Be sure that you are not exceeding the
maximum recommend load described in this
manual. If the problem persists, contact GK
directly for technical advice.
Enjoy:
You should now have a thorough understanding
of how your new Backline amplifier works and
what advantages it can offer you in getting
“your” sound. We thank you for reading the
Owner’s Manual and wish you the best of times!
Please send us your comments via www.gallienkrueger.com or email us at sales@gallien.com.
Tech Talk
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Block Diagram: Backline 112 & 110
Specifications
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Backline 112 & 110 Specifications:
Output Power:
110: 70W @ 8 Ohms
112: 100W @ 8 Ohms
Input Section:
Max. Input Level 0.6V Rms
With -10dB pad 1.6V Rms
Input Impedance 1M Ohm
Equalizer:
Bass +10db @ 60Hz
Mid +6db/-10dB @ 250Hz
Treble +14db @ 7kHz
Contour +2db@50Hz/
-10db@500Hz/
+3db@7kHz
Noise: >-90db “A” weighted.
Power Requirements:
U.S.A./Canada 120V/60Hz
112: 200W (full), 102W (average)
110: 98W (full), 69W (average)
Europe 230V/50Hz
112: 200W (full), 102W (average)
110: 98W (full), 69W (average)
Japan 100V/50Hz
112: 200W (full), 102W (average)
110: 98W (full), 69W (average)
Dimensions(HxWxD):
Backline 110: 12.9"W x 15.9"H x 13.65"D
Backline 112: 14.9"W x 18.3"H x 15.35"D
Weight:
Backline 110: 30lbs
Backline 112: 40lbs
Protection: Full short circuit, thermal,&
RF protection. Stable into
reactive and mismatched loads
Five second muted warm-up.
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Backline Series Owner’s Manual
Part # 160-0180-B1
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