Gallien-Krueger 1001RB-11, 700RB-11 User Manual

Artist Series

1001RB-II/700RB-II

Owner’s Manual

1001RB-II/700RB-II

1001RB/115

700RB/115

1001RB/210

700RB/210

700RB-II/1001RB-II Series

Table Of Contents

Table of Contents

*All Features and specifications are subject to change without notice

**This list is subject to change without notice.

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

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

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

Bi-Amp and Normal Operation.......................................

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

Settings and Sounds........................................................

Installation and Maintenance........................................

Front Panel Controls.....................................................

Rear Panel Controls......................................................

1001RB-II/700RB-II Series Combos...........................

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

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

.

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

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5
6
7

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9
10
11
12
13
14
16

Gallien-Krueger

2234 Industrial Drive
Stockton, CA 95206
phone: [phone]
fax: [phone]
email: [e-mail]
internet: www.gallien-krueger.com

2

Congratulations

700RB-II/1001RB-II Series

Your purchase of a new Gallien-Krueger 1001RB-II/
700RB-II 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 1001RB-II/700RB-II Series product,
you own a unit 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 amplifier should have come with the following
items, please check the contents of the box to ensure that
you have everything.

Included with your 1001RB-II/700RB-II Head:
1001RB-II/700RB-II 1
Rack mount Ears with Hardware 2
Power Cord 1
Four Conductor Speakon Style Cable 1
Owner’s Manual 1
Warranty Card 1
Safety Instructions Sheet 1

If your 1001RB-II/700RB-II Series amplifier or
combo did not come with all the items listed above,
or if you encounter problems while setting up your
new equipment, please contact your local dealer, or
us as soon as possible at:

Gallien-Krueger, Inc.
2234 Industrial Drive
Stockton, CA 95206
phone: [phone]
fax: [phone]
Internet: www.gallien-krueger.com
Email: [e-mail]

We wish you a lifetime of good playing and remem­ber to always have fun!

Introduction

Included with your 1001RB-II/700RB-II Combo:
1001RB/210 (/115), 700RB/210 (/115) 1
Power Cord 1
Owner’s Manual 1
Warranty Card 1
Safety Instructions Sheet 1

3

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

Introduction

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,
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.
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.

700RB-II/1001RB-II Series

GKGK

GK, our products

GKGK

GKGK

GK

GKGK

Gallien-KruegerGallien-Krueger

Gallien-Krueger

Gallien-KruegerGallien-Krueger

Robert Gallien

Founder & President

4

Safety Information

700RB-II/1001RB-II Series

Verify Line, Voltage and Amperage Before
Use:

Your new 1001RB-II/700RB-II Series Bass Amp has
been factory configured for use with:

.

· 120 Volt/60Hz 20 Amp circuit for USA & Canada.

.

· 230 Volt/50Hz 10 Amp circuit for Europe
& Australia.

.

· 100 Volt/50Hz 20 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.

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 completely 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.

Safety Information

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 to the speaker.

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.

5

700RB-II/1001RB-II Series

Quick Start

The 1001RB-II/700RB-II 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. Plug it in:

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

Quick Start

safety information on page 5 for details).

2. Connect your cabinets:

Connect your speaker cabinets to the amplifier
outputs marked 700W/480W AMP ONLY or
“SPEAKON” OUTPUTS. Be sure not to exceed the
recommended speaker load below.

Maximum Recommended Speaker Loads:

One 4 Ohm, or two 8 Ohm cabinets on the Woofer
Amp. One or two 8 Ohm horns on the 50W/Tweeter
Amp.

If you are using an RBH Series cabinet, use the
supplied 4 conductor Speakon cable to connect to the
“Speakon” outputs on the rear panel of the amplifier.
In addition, set the switch on the RBH cabinet to “Bi­Amp”.

For connection to all other cabinets, connect to the
1/4” outputs labeled 700W/480W amp only.

For more information on Bi-Amp and Normal mode,
see page 7.

Caution:

Do not connect any Speakon cables labeled “Bridge
Mode” to the 1001RB-II/700RB-II. These cables are
used for the old 2000RB amplifier only, and may
result in damage to your amplifier.

3. Initial front panel control settings:

Set all EQ controls and the Boost control to 12
o’clock. The Voicing Filters should be turned all the
way down to get a flat response. Set the Level and
Master Volumes at 0. If you have a five string bass,
push the button marked String Bass in.

4. Plug in your bass:

Using an instrument cable, connect your bass to the
Input jack and press the power switch on. If you have
active tone controls on your bass, turn all of the
controls to the middle or flat position and turn the
volume all the way up. If you have conventional,
passive tone controls, turn all tone and volume
controls all the way up.

5. Level and Master Volume settings:

Set the Master Volume to 12 o’clock. Turn the Input
volume up as you play. Try not to turn it past 1
o’clock unless you want an overdrive effect. If the
yellow clip light turns on, press the -14db button in.
If it is still on, try turning the volume down on your
bass.

At this point:

You should be hearing your bass quite well. You can
use the Volume and Woofer-Master to achieve a
comfortable sound level.
more volume, turn up the Woofer-Master control first.

Remember:Remember:

Remember: If you need

Remember:Remember:

When using non-GK cabinets that haveWhen using non-GK cabinets that have

When using non-GK cabinets that have

When using non-GK cabinets that haveWhen using non-GK cabinets that have
Speakon connectors, only use a standard twoSpeakon connectors, only use a standard two

Speakon connectors, only use a standard two

Speakon connectors, only use a standard twoSpeakon connectors, only use a standard two
wire Speakon cable. The supplied fourwire Speakon cable. The supplied four

wire Speakon cable. The supplied four

wire Speakon cable. The supplied fourwire Speakon cable. The supplied four
conductor Speakon style connector couldconductor Speakon style connector could

conductor Speakon style connector could

conductor Speakon style connector couldconductor Speakon style connector could
result in damage to your amplifierresult in damage to your amplifier

result in damage to your amplifier

result in damage to your amplifierresult in damage to your amplifier

..

.

..

6

700RB-II/1001RB-II Series

Bi-Amp and Normal Operation

The 1001RB-II/700RB-II’s unique design allows for
easy setup into Bi-Amp or Normal configurations.
The operational mode is configured by how you
connect your speaker cabinets. In addition, you have
the option of driving one cabinet in Bi-Amp and one
with Normal operation.

1001RB-II/700RB-II setup up for Bi-Amp Operation:

1001RB-II/700RB-II setup up for Normal Operation:

Bi-Amp & Normal Operation

1001RB-II/700RB-II setup up for Bi-Amp
Operation:

The Bi-Amp feature of the 1001RB-II/700RB-II series
is automatically engaged when you connect an RBH
series cabinet (with switch on the cabinet set to Bi­Amp) to the 1001RB-II/700RB-II with the supplied 4
conductor Speakon cable. This setup gives the
1001RB-II/700RB-II complete control of the tweeter
and woofer signals sent to your rig. Now you can
push the woofers to the max., while the tweeter
remains clean, crisp, and free of clipping distortion.
In addition, a smooth tight tone is easily dialed in by
adjusting the Tweeter and Woofer Master controls on
the 1001RB-II/700RB-II front panel. Note: In the Bi­Amp configuration the 50W tweeter amp is always
operating from 5kHz and up (high frequencies only).
It will drive horns only and not cabinets.

GK Speakon Cable

1+ Woofer Amp +

1- Woofer Amp -

2+ Tweeter Amp +

2- Tweeter Amp -

GK RBH Series Cabinet
410RBH, 210RBH,
115RBH
Set to Bi-Amp mode.

1001RB-II/700RB-II setup up for Normal
Operation:

The 1001RB-II/700RB-II series amplifier is config­ured for normal operation when you are connect­ing to any cabinet with a 2 conductor Speakon style
cable, 1/4” to 1/4” speaker cable or 1/4” to banana
plug speaker cable. In this setup, the speaker
cabinet is driven by the Woofer/Main amp and the
50W/Tweeter amplifier is not used. If you are using
RBH series cabinets, the volume of the tweeter
(relative to the woofer’s volume) can be adjusted
using the Horn Level control of the cabinet’s
internal crossover.

GK Speakon Cable
1+ Woofer Amp +
1- Woofer Amp -

¼” Woofer Cable
Tip Woofer Amp +
Shield Woofer Amp -

GK RBH Series Cabinet
410RBH, 210RBH, 115RBH
Set to Full Range mode.

Any brand name cabinet with
appropriate impedance and
power rating.

7

700RB-II/1001RB-II Series

Sound Tips

The 1001RB-II/700RB-II Series has several unique
features which, if used properly, will obtain that
sound you have been searching for.

The Equalizer:

The Equalizer is used to fine tune your sound. When
adjusting it, do it just a little at a time. These are active
circuits, and small changes can make a big difference in
your sound. With a little experimentation you will find

Sound Tips

that this equalizer is very easy to use, never sounds weird
and provides you with a large variety of great sounds,
unique to GK.

Contour:

Increasing the Contour level will scoop out mid­range frequencies while boosting the highs and lows.
The sound, once again, is unique to GK and unavail­able on any other Bass amp. Lower contour settings
are recommended for midrange clarity at higher
playing levels. For 800RB voicing, set the contour
control either on 0 or 10 (Off, On on 800RB).

String Bass:

The way a Bass amp deals with the instrument low
string is a critical part of its sound. In fact, a five
string instrument requires an entirely different low
end response than a four string instrument. No
equalizer can make the necessary adjustments to
accommodate both. However, the String Bass button
on the 1001RB-II/700RB-II Series does just that.
When it is out, the 1001RB-II/700RB-II is voiced like
the 800RB. Push it in and the 1001RB-II/700RB-II is
voiced for five string instruments. For some playing
styles you may want it in, even with a four string
instrument.

Boost/Master:

Turning up the Boost control, will add a little growl to
your tone. This is an unmistakable GK trade mark
sound, that you will grow to appreciate. Raising the
Boost while lowering the Master will add more growl
while keeping the sound level the same. Growl is
actually a small amount of even order harmonic
distortion, that sounds great through a woofer, but
horrible through a horn (see Bi-Amp solution below).
For most playing situations, the Master is set between
12 & 3 o’clock. The cleanest sound is obtained by
setting the Master above 12 o’clock, and going above
3 o’clock for maximum power situations.

Direct Out:

The 1001RB-II/700RB-II provides a low noise, high
quality balanced direct out for connection to PA and
recording consoles. With the Pre/Post EQ switch set to
“Pre” (Out), the direct output signal is fed directly
from our low noise, high headroom, FET input stage
providing a low noise output superior to external
direct boxes and impedance transformers. In addi­tion, this output is calibrated for 1.0V (0 dBV) output
and can be adjusted to unity gain (instrument level)
by adjusting the Level control to -15 dB (U) . With the
switch in the Pre position, the Direct Output signal is
only effected by the Level, -14dB Pad, and Tuning
Mute controls. This allows you to adjust your tone
and volume on stage without changing the Direct
Output signal level and confusing your sound man.

Changing the Pre/Post EQ switch to “Post” ( In),
sends the “GK sound” and preamp response to the
Direct Out jack. This gives you complete control over
the Direct Out’s tone and volume. In addition, a
Ground (Gnd) Lift switch is included to remove hum
and buzz when connecting to equipment powered by
a different ground system.

8

700RB-II/1001RB-II Series

Settings and Sounds: 1001RB-II & 700RB-II

The 1001RB-II/700RB-II 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.

* Contour note:* Contour note:

* Contour note:

* Contour note:* Contour note:
At higher playing levels the contour should be set lower for mid-range clarity.
To get 800RB voicing, the contour should be set to 0 or 10 only.

* V* V

olume note:olume note:

* V

olume note:

* V* V

olume note:olume note:

Adjust volume before playing these recommended settings.

Slap:

Rock:

Settings & Sounds

Both pickups recommended.

Both pickups recommended.

Reggae:

Jazz/Fusion:

9

Front pickup recommended.

Both pickups recommended.

700RB-II/1001RB-II Series

Installation and Maintenance

Installation:

.

· To insure proper operation and to avoid
potential safety hazards, place the unit on a
firm, level surface. When installing the unit
in a rack, be sure the mounting hardware can
support the amplifier’s weight. To save space
in your rack, the 1001RB-II/700RB-II’s feet
can be removed using a Philips head screw
driver.

.

Installation & Maintenance

.
.

· Avoid moist or humid locations.

.

· Remember, power amplifiers generate heat.

Make certain that proper space is provided for
ventilation. The 1001RB-II/700RB-II Series
requires at least ½ inch clearance above for
proper ventilation. Never block the fan vent
holes in the top or front of the amplifier. If
the amplifier will be installed in a rack or
other enclosed area, make sure that there is
sufficient air movement within the enclosure
to allow proper cooling. Consult your dealer
for more information.
Avoid installation in extremely hot or cold
locations, and areas that are exposed to direct
sunlight, or near heating equipment.

The heat sink fins and ventilation slots that
form part of the enclosure are specially
designed to remove this heat. Placing other
electronic equipment near these heat­dissipation systems may possibly affect the
long-term reliability of both your amplifier
and the other equipment.

Cleaning:

When the unit gets dirty, 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.

Maintenance:

Your new amplifier is rugged. It was built to give you a
lifetime of trouble-free operation, if it is operated in
accordance with the instructions contained in this
manual. The only maintenance required is cleaning. If
you are going to move your amplifier around frequently,
we recommend a road case to protect it from scratches
and road wear.

Moving the Unit:

Before moving the unit, be certain to disconnect any
interconnection cords with other components, and make
sure that you disconnect the unit from the AC outlet.

10

Front Panel Controls

700RB-II/1001RB-II Series

Front Panel Controls

1-Balanced Direct Out:

An electronically balanced output, that you can run to your P.A. system.

2-Ground/Lift:

This switch disconnects the ground on the balanced, XLR output to eliminate
hum and buzz when connnecting to equipment that is running on a different
ground system.

Pre/Post EQ Button:

Selects the direct out signal before or after the EQ.

3-Direct Level Out

Controls the level at the direct out jack.

4-Input:

A standard ¼” input jack to plug in active or passive basses using a shielded
cord.

5- -14dB Pad:

Input attenuator button. The button is generally left out, except in rare cases
when the clip LED flashes. This switch should be pressed if the CLIP LED stays
on continuously. It may be necessary to “pad” the input if you are using a bass
with active electronics or very high output.

Clip LED:

LED lights yellow when the input stage is being over-driven. If -14dB
PAD is pressed and clip LED still stays lit, turn down the volume on
your bass.

Tuning Mute Button:

Set this switch to “On” when tuning up. No signal will be sent to the speakers,
or the P.A. system.

Mute LED:

LED turns on when “Tuning Mute” is switched to the “ON” position.

6-Volume:

Sets pre-amp gain after the input stage. It is used in conjunction with the input
pad, to optimize the amplifier’s headroom.

7-Voicing Filters:
4/5 String Bass:

Setting

this button to the “ON” position, voices the pre-amp for basses with
“B” tuning (5 string bass). Leaving it in the “Out” position will voice the amp
like the 800RB, for a 4 string bass.

Contour:

Drops the mid-range frequencies while boosting lows & highs.

Presence:

Adds edge and definition to higher frequencies.

Active Equalization:
8-Treble:

Boost and cut at 7 kHz +14dB shelving type. Add or remove edge and
definition.

9-High Mid:

Boost and cut at 1 kHz +6dB/ -10dB, “Q Optimized,” band pass type. Works
on lower string harmonics, and effects the punch of your sound.

10-Low Mid:

Boost and cut at 250Hz +6dB/-10dB, “Q Optimized,” band pass type. Works
on the main body of your sound.

11-Bass:

Boost and cut at 60Hz +10dB, shelving type. Controls low end push.

12-Boost:

A post EQ gain stage using GIVE technology which adds “growl” as it is
turned up.

13-Tweeter:

Master volume control for the tweeter (50W) amp..

14-Tweeter Hi-Cut:

Cuts frequencies above 10kHz, producing a more “cone-like” (less metallic/
harsh) sound from the tweeter.

15-Woofer/Master:

Master volume control for the woofer (Main) amplifier.

16-Woofer Hi-Cut:

Press this button to engage the electronic crossover for the woofer. This cuts
frequencies above 5kHz (Rolls off the highs).

17-Effects Loop:

Send and return jacks provided for the insertion of effects after the EQ, but
before the boost section. Some effect units have gain, turning the BOOST
down, will compensate for this.

18-Tuner Output

Output comes directly off the input stage and can be patched to a tuner with
a shielded patch cord. This output is unaffected by the Tuning Mute Feature.

19-Power/Protect LED:

The LED is red at turn-on for five seconds while the amp powers up.
The LED turns blue when the amp is ready to play. Should the amp
experience a fault (over heat, over current) the amp will mute and
this LED will switch to red until the condition is corrected. This
LED turns off when the power switch is turned off.

20-Power Switch:

Turns the amplifier on or off. Should a problem occur during
operation press this switch out first. This turns the amp off, but
does not completely disconnect the power from the AC mains. The
power LED should be off at this point.

11

11

700RB-II/1001RB-II Series

Rear Panel Controls

Rear Panel Controls

1- AC Receptacle:

The power cord is detachable and plugs in here.

2- 700W/480W Amp Only:

700W/480W power amp output for Full-Range
operation only. They deliver 700W/480W into 4
Ohms. Lower impedances should not be used.
Higher impedances such as 8 Ohms, 16 Ohms, or No
Load are acceptable. One 8 Ohm cabinet is okay. One
4 Ohm and one 8 Ohm is not recommended. No
damage will result from operating the amplifier with
the speakers disconnected.

3- “Speakon” Outputs:

Enables BI-AMP operation by connecting a GK-RBH
Series cabinet with the provided 4 conductor Speakon
cable. This connects the Tweeter/50W amplifier
allowing the Tweeter control on the front panel to
control the signal going to the horn. See Bi-Amp and
Normal Operation on page 7 for more information.

1

2 3

CAUTION:

UNDER NO CIRCUMSTANCES
SHOULD THE WOOFER/MAIN
AMP AND THE 50W/TWEETER
AMP BE CONNECTED TO­GETHER OR BE CONNECTED
TO THE SAME SPEAKER !!!

Caution:

Do not connect a Speakon cable labeled “Bridge
Mode” to the 1001RB-II/700RB-II. This may result in
damage to the amplifier.

Maximum Recommended Load:

One 4 Ohm or two 8 Ohm cabinets on the Woofer/
Main Amp.
One or two 8 Ohm horns on the 50W Amp.

12

700RB-II/1001RB-II Series

1001RB-II/700RB-II Series Combos

The 1001RB-II/700RB-II Series combos deliver the
1001RB-II/700RB-II’s unique features and distinct
sound by using a variety of internal speaker configu­rations, GK’s RBH cabinet technology and a unique
Lock N’ Roll transport system.

Speaker Configurations:

1001RB/115 or 700RB/115:

One 8 Ohm 15″speaker and
one 8 Ohm horn.

1001RB/210 or 700RB/210:

Two 16 Ohm 10″ speakers
(wired in parallel for an 8
Ohm equivalent load)and
one 8 Ohm horn.

The 1001RB-II/700RB-II combo electronics are
identical to the 1001RB-II/700RB-II head and are
rated for the same maximum power output and
speaker load (700W/460W into 4 Ohms, and 480W/
320W into 8 Ohms). Maximum power is achieved by
connecting one 8 Ohm extension cabinet (such as the
210RBH, 410RBH, or 115RBH) in addition to the
combo’s internal 8 Ohm speaker load. To drive more
than one extension cabinet, the combo’s internal
speaker can be disconnected by unplugging the
Speakon cable connected to the combo’s back panel.
Below is a detailed description of the maximum loads
the combos can drive.

Maximum recommended load with the
internal speaker connected:

One 8 Ohm cabinet on the Woofer/Main Amp.
One 8 Ohm horn on the 50W/Tweeter Amp.

Lock N’ Roll Transport System:

The Lock N’ Roll transport system is designed for
quick and easy rolling of the combo on flat surfaces
such as carpet, flooring, pavement, etc. To engage the
lock and roll handle, first move the combo into the
upright position (front perpendicular to the ground).
Next, stand behind the cabinet, with your left hand,
push the GK locking latch (below the handle) to the
right, and lift the Lock N’ Roll handle up with your
right hand. Let go of the locking latch and the
handle will lock into place after about 1 1/2 feet.
Finally, grab the handle and tilt towards the back of
the combo. The wheels on the bottom of the cabinet
will automatically engage and allow smooth rolling.

To disengage the Lock N’ Roll system, first return the
combo to its upright position and stand behind the
unit. Next, with your left hand, pull the locking latch
at the base of the handle to your right, while pushing
the handle down gently with your right hand. Fi­nally, push the handle down until it stops and is flush
with the top of the combo. The handle will lock into
place.

The 1001RB-II/700RB-II Series combos are designed
for maximum setup versatility to accommodate a
variety of playing situations. For practicing and close
monitoring situations, tilt the cabinet back into its
“Rock Back” position. For stronger bass and audi­ence projection, leave the combo in the upright
position.

Combos

Maximum recommended load with the
internal speaker disconnected:

One 4 Ohm, or Two 8 Ohm cabinets on the Main/
Woofer Amp.
One or Two 8 Ohm horns on the 50W/Tweeter Amp.

13

Tech Talk

700RB-II/1001RB-II Series

Characteristics of the 1001RB-II/700RB-II:

The 1001RB-II/700RB-II Series is a flexible, state-of­the-art Bass Amplifier, designed to deliver maximum
performance, and be simple to operate. This is
accomplished through a few, very important features:

· Extremely high current power supply and

.
.

· Bi-Amp sound, two power amps, 700W/480W

Tech Talk

.

· Electronic crossover, seamless two way sound.

.

· Four, Bass specific bands of active

.

· Three voicing filters for shaping and

.

· Balanced direct output with level control

.

· Continuously variable fan cooling.

Current Output & Bass Response:

When a power amplifier is pushing several speaker
cones, and a high-power transient like a string slap
comes along, the amp has to tap into a large power
reserve to maintain cone control. If the amplifier
doesn’t have this ability, the sound is unresponsive
and less out front. The amp loses it’s punch and feel
at higher playing levels. Instead of responding to
your every command, the amplifier simply cuts those
transients off, leaving you with the feeling that
something is missing in your sound.

Since most amplifiers have limited output current
capacity, they need “current limiting circuits” to
protect against self-destruction. High-power tran­sients trigger these circuits, which rob the amplifier of
it’s ability to control speaker cones. This creates a
mushy, unresponsive feel to your sound.

power amp circuitry, gets the sound out of
your head.

for the woofer, and 50 Watts for the horn.

equalization for precise tone control.

customizing your sound.

eliminates need for a direct box.

growl and keep the definition that the horn provides.
The horn always has to be turned down. In a Bi-Amp
system like the 1001RB-II/700RB-II Series, the woofer
and the horn, each have their own power amp,
allowing us to get growl in the woofer only, while
keeping the horn sound crystal clear. Now you can
over-drive the woofer as much as you want, and leave
the horn all the way up, keeping the definition it
brings to your sound. Running the 1001RB-II/
700RB-II Series in Bi-Amp mode through a GK-RBH
cabinet, for the first time allows full access to the
benefits of Bi-Amp sound. This is the reason the
1001RB-II/700RB-II Series is a Bi-Amp, and it is the
reason you will be able to explore an entirely new
territory of Bass sound.

Electronic Crossover:

Bi-Amp systems allow the crossover to be electronic
and therefore, have much higher quality than passive
crossovers. A crossover separates the sound into two
parts (high and low frequency). The highs are sent to
the horn or high frequency cabinet and the lows are
sent to the woofer. In an ideal system, adding the
highs and the lows back together would recover the
original signal. Most passive Bass systems have very
poor crossovers, resulting in severe signal corruption.
When these signals are added back together (as in
your ear), they have very little in common with the
original signal. The 1001RB-II/700RB-II Series uses
a Constant Voltage crossover which results in very
little signal corruption. In fact, when the high and
low signals are added back together, the result is
extremely close to the original. This makes a two-way
system sound more seamless, and less artificial. We
have also included a Tweeter Hi-Cut switch in the
crossover, which rolls the tweeter off above 10kHz
giving it a less glassy, more cone like sound.

The 1001RB-II/700RB-II Series has extremely high
current capacity, so it doesn’t need current limiting
circuits for over-load protection.

There is nothing in the 1001RB-II/700RB-II Series
power amp to come between you and your sound
except faithful, raw power.

Bi-Amp Sound:

Bass players have always liked the growl they get from
slight overdrive. In GK amps this comes partly from
the boost circuits and partly from the power amp. The
problem is that growl, sounds great through woofers,
and horrible through horns. In the typical full range
system with a passive crossover, there is no way to get

Equalization:

Standard tone controls and graphic equalizers give
you plenty of variation, but they don’t provide what
the instrument really needs. The fact is, graphic
equalizers are intended for room equalization. The
equalization in Gallien-Krueger amplifiers reflects 30
years of continuous development and refinement. The
GK equalizer is unique to the industry, it’s not just a
normal four band equalizer, each section is a special
circuit optimized to perform a Bass specific job in its
range of operation. These sections are wired in Series,
so they add to one another creating a tremendously
flexible equalizer, that doesn’t sound weird at any
setting. Now it is possible to obtain the sound you
desire.

14

700RB-II/1001RB-II Series

Voicing Filters:

Voicing filters are used to completely re-voice the
amplifier. In the case of the Contour and String Bass
controls, the effect is dramatic.

a low speed, reducing fan noise. As the amp works
harder, the fan speed increases to keep everything
cool.

The Contour is used to completely revoice the ampli­fier. The Contour control tunes between two different
shaping circuits, with greatly different response. With
the control all the way up, the low end is slightly
boosted, the mids are dropped and the high end is
pushed up. This is only found in GK amplifiers.

The way a Bass amp deals with the instrument low
string is a critical part of it’s sound. In fact, a five
string instrument requires an entirely different low
end response than a four string instrument. No
equalizer can make the necessary adjustments to
accommodate both, however the String Bass button
on the 1001RB-II/700RB-II Series does just that.
When it is out, the 1001RB-II/700RB-II is voiced like
the 800RB. Push it in and the 1001RB-II/700RB-II is
voiced for five string instruments. For some playing
styles you may want it in, even with a four string
instrument.

Low Noise Operation:

The 1001RB-II/700RB-II Series uses a high gain,
high headroom, low noise input stage. It has such a
large dynamic range (60v p-p) that very few instru­ments can overdrive it. Even most basses with
“active” electronics do not need the input attenuator
to be set. The benefit to you is less hiss from your
horn, and over all, much less noise.

“G.I.V.E.” Technology:

As in all GK pre-amps, the 1001RB-II/700RB-II Series
pre-amp incorporates what we call G.I.V.E (Gate
Induced Valve Effect) Technology. We use field effect
devices with the gate biased in 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,
G.I.V.E. technology produces a consistently pleasing
bass tone.

Cool Running = Reliability:

The 1001RB-II/700RB-II Series uses a “dual rail
power supply” that generates about half the heat of
conventional amplifiers. Low output signals run off a
low voltage supply, and high level signals run off a
high voltage supply. This keeps the amp running a
lot cooler and makes it much more reliable. To cool
the amp when its being driven hard, we’ve designed a
temperature sensitive fan cooling system. When the
amp is under a light load, the fan is off or running at

Smart Protection Circuitry:

The 1001RB-II/700RB-II’s protection circuitry
constantly monitors for unsafe operating conditions
such as short circuits, miss-wired speaker cables,
blown speakers, improper ventilation, and incorrect
speaker configurations. In addition, protection is
provided during power up/down. If the 1001RB-II/
700RB-II senses any unsafe operating conditions, the
output signal is immediately muted and the power
light changes from Blue 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.

Speakon Cables:

To make use of the 1001RB-II/700RB-II’s Bi-Amp
feature you will need to use the four conductor
Speakon style cable (provided with the 1001RB-II/
700RB-II head, and built into the combos for connec­tion to the internal speaker) to connect to a GK RBH/
SBX Series cabinet. This specially designed cable
carries the signals for both amplifiers (700W/480W
Woofer Amp and 50W Tweeter Amp) to the speaker
cabinet. Below is a table describing the Speakon
cable connections to the 1001RB-II/700RB-II head
and combos.

Speakon Pin # Signal
1+ Woofer/Main Amp +
1- Woofer/Main Amp ­2+ 50W /Tweeter Amp +
2- 50W /Tweeter Amp -

To obtain an additional 4 conductor Speakon cable
for use with the 1001RB-II/700RB-II please contact
your local dealer or contact GK directly.

In Closing:

You should now have a thorough understanding of
how your new 1001RB-II/700RB-II Series 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
email us at

[e-mail].

www.gallien-krueger.com or

Tech Talk

15

Block Diagram

Specifications

1001RB-II/700RB-II Series Specifications:

700RB-II/1001RB-II Series

Output Power:
1001RB-II:
700W Amplifier 460W @ 8 Ohms

700W @ 4 Ohms
700RB-II:
480W Amplifier 320W @ 8 Ohms

480W @ 4 Ohms
50W Amplifier 50W @ 8 Ohms

75W @ 4 Ohms
Input Section:
Maximum Input Level 0.6V Rms
With -10dB pad 1.6V Rms
Input Impedance 1M Ohm
Send output impedance 220 Ohm
Return input impedance 50k Ohm
Tuner Output Impedance 10k Ohm
Direct Output Impedance 500 Ohms
Equalizer:
Bass
Lo-Mid +6db/-10db @ 250Hz
Hi-Mid +6db/-10db @ 1kHz
Treble
Voicing Filters:
String Bass Button +11db@20Hz
Contour +2db@50Hz /

Presence +9db@10kHz
Crossover Triple pole constant

Noise -90db referenced to 700W/480W,

+10db @ 60Hz

+14db @ 7kHz

-10db@500Hz /
+3db@7kHz

voltage crossover at 5kHz

“A” weighted

Cooling: Continuously Variable-

Speed Fan

Amplifier Protection:

Full short circuit, thermal,& RF protection.
Stable into reactive and mismatched loads.
Five second muted warm-up.

Dimensions (HxWxD):

3 1/2” x 17” x 8 ¼”
(2 Rack Spaces)

Weight:

700RB-II: 16.5lbs
1001RB-II: 18lbs.

Power Requirements:

U.S.A./Canada 120V/60Hz
700RB-II: 994W(full power), 230W(average power)
1001RB-II: 1476W(full power), 317W(average power)

Europe 230V/50Hz
700RB-II: 994W(full power), 230W(average power)
1001RB-II: 1476W(full power), 317W(average power)

Japan 100V/50Hz
700RB-II: 994W(full power), 230W(average power)
1001RB-II: 1476W(full power), 317W(average power)

1001RB-II/700RB-II Series

Owner’s Manual

Part #160-0030-C