Gallien-Krueger MB 800 operation manual

MB 800

OWNER’S MANUAL

MB 800

Congratulations!

Your purchase of a new Gallien-Krueger MB
Series amplifier is surely the result of much care­ful consideration
at Gallien-Krueger are pleased that you chose us,
and are determined that you will be a satisfied
customer. In choosing a MB Series amplifier, you
now own an amplifier with many unique features
which will allow you to create your own distinct
sound.

on your part. For our part, we

To get the most out of your new purchase, please

Introduction

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
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 MB 800 Amplifier:

Power cord 1
Owner’s manual 1
Warranty card (U.S. only) 1
Safety instructions sheet 1
One button foot switch 1

If your MB Series amplifier 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 as soon as possible.

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

is not a substitute

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’m a
Stanford educated engineer who worked my
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 the principal innovator at GK, our products
reflect my attitudes and life experiences. I
don’t model my designs after other
manufacturers’ products. Instead, I believe new

old problems are best solved with new

and
solutions. Having taken our own path, GK
products enjoy a unique, unmatched sound,
allowing you 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 over thirty five years ago
are still telling their story, the products we create
today will be talking to us tomorrow.

We’ll be listening,

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

Robert Gallien
Founder and President

2

MB 800

C A U TION

!

C A U TION :

WA RNI N G :

Table Of Contents

Safety Information __________________________ 4
Quick Start ________________________________ 5
Front Panel Features ________________________6
Rear Panel Features/Sample Settings ___________7
Sound Tips ________________________________8
Installation and Maintenance __________________9
Tech Talk _______________________________ 10
Specications _____________________________11

*All Features and specications are subject to change without notice

Please read the Safety Information section on page 4 and installation
instructions on page 9 before continuing.

Gallien-Krueger
2234 Industrial Drive
Stockton, CA 95206
phone: [phone]
fax: [phone]

Table of Contents

email: [e-mail]
internet: www.gallien-krueger.com

This amplifier is capable of producing high sound

pressure levels. Continued exposure to high SPL’s can

cause damage to your hearing. Always set the volume at

a safe listening level or use hearing protection if the unit

is operated at higher levels.

TO R E DUCE THE RISK OF ELECTR IC SH OCK, DO N O T
RE MOVE TO P COVER . NO U SER-SER VIC EABL E PA R TS
INSID E. REFER SERVIC ING T O QUAL IFIED SER VICE
PERSONNE L.

TO R EDUCE THE R ISK OF FIR E O R ELE CT RIC S H O C K ,
DO N OT EXPOSE THIS APPLIANCE T O RAIN OR M OISTURE

TO PR EVENT E L ECT RIC SH OC K, M AT CH WIDE BL AD E OF PLUG T O
WIDE SL OT, FULLY I N SERTED.

POUR EVITER LES CHOC S ELE CT RIQU ES, INRODUI RE LA LA ME LA
PLUS LA RGE DE LA FICHE DA NS LA BORNE CO RRESPONDAN TE
DE LA P R ISE ET POU SER J USQU’A U FOND.

C A U TION :

ATTENTION:

The lightning flas h with arrow
head symbol, wit hin the
equilateral t riangle, is
intended t o alert the u ser to the
presenc e o f unins ulated “dangerous voltage”
within t he product inclos ure that may be of
su ffi cient magnit ude to constit ute
a risk of electit ric shock to persons

Warning!

RISK OF ELE CT RIC SHO CK

DO N OT OPEN

!

The exclamation point wit hin an
equilateral t riangle, is int ended
to alert the u ser t o t he presence
of important operat ing and
maintenanc e ( serv ic ing) instructions in t he
literat ure accompany ing the appliance .

3

MB 800

10cm

3.94”

10cm

3.94”

10cm or 3.94”

front

rear

MB800

required clearances

Safety Information

Please read all enclosed safety precautions before
connecting or operating this product.

Verify Line Voltage and Amperage

Your amplifier has been factory configured for
use with the specific line voltage for your location
only. For example, units set to operate within
countries that supply 100-120 volt electrical
service are not compatible with 230-240 volt
systems used in other countries.

100-120 Volt/60Hz 15A circuit for USA and
Canada.
220-240 Volt/(50/60Hz) 10A circuit for UK and

Safety Information

Australia.
220-240 Volt/(50/60Hz) 10 A circuit for Europe.
100-120 Volt/50Hz 15A circuit for Japan.
220-240 Volt/50Hz 10A circuit for Korea.
Proper AC circuit for all other countries.

Connecting the amplifier to a line with
specifications other than indicated above can create
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 plugg

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 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.

ing the unit into a wall outlet.

AC Power Cord: To avoid safety hazards, use only
the power cord supplied with your unit. If a
replacement cord is needed, make certain to use a
standard IEC compliant cord. Damaged power
cords should be replaced immediately. When
setting up, make certain that the AC plug is easily
accessible. If you do not intend to use the amplifier for
a considerable length of time, disconnect the plug
from the AC Mains Socket. Do not use an extension
cord.

Earth Grounding Connection: To prevent electric
shock, do not remove the grounding plug on the power
cord, or use any plug or extension cord that does not
have a grounding plug provided. Make certain that
the AC outlet is properly grounded as well. Do not
use an adapter plug with this product.
Do Not Open the Amplifier Enclosure:
are no user serviceable parts inside this product.
Opening the amplifier enclosure may present a shock
hazard. Modification to the product will void your
warranty. If liquid enters the unit, or any metal
object such as a paper clip accidentally falls inside
the enclosure, disconnect the unit from the AC power
source immediately and consult an authorized
service station.
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.
Heat & Ventilation: Make sure there is space
provided for proper ventilation. Avoid using in
extremely hot or cold locations and areas that are
exposed to direct sunlight or near heating equipment.
Avoid using in moist or high humidity areas.

There

Please refer to page 9 for more
instructions concerning installation.

NEVER BLOCK THE FAN VENT HOLES ON

THE SIDES OF THE UNIT!

4

Quick Start

MB 800

The MB 800 amplifier is designed to be simple to
operate. All controls have a well defined purpose.
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 safety
information on page 4 for details).

2. Connect your cabinets: Connect your speaker
cabinets to the amplifier outputs marked
SPEAKER using a standard two conductor
speakon cable or Gallien-Krueger four conductor
speaker cable. Be sure not to exceed the
recommended speaker load as noted below.

Maximum Recommended Speaker Loads:
One 4 Ohm, or two 8 Ohm cabinets.

3. Initial front panel control settings: Set all

EQ controls and contour knob to 12 o’clock. Set
the Gain A, Gain B, Level B and Master control
to the full counterclockwise position. Upon
power up, the Gain A control is the default input
gain adjustment and should be lit blue. If the
Gain A knob is not lit, push it until a slight click
is felt and the knob indicator is lit blue.

4. Plug in your bass: Using an instrument
(shielded) cable, connect your bass to the Input
jack and press the power switch to the on (in)
position. 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 control to 12 o’clock. Turn the Gain A
knob up as you play until the desired output
volume is reached. If the input clip indicator (the
ring surrounding the -10 pad switch) flashes
more than occasionally or distortion is audible,
set the -10dB pad switch to the up position and
increase the Gain A level until the desired output
volume is reached. If the clip indicator continues
to light often, it may be necessary to decrease the
volume on your instrument.
*For high volume applications, it may be
necessary to increase the Master control beyond

the 12 o’clock setting.

6. Gain B/Level B: Pushing the Gain B knob
(also selectable from the provided footswitch)
activates the Gain B input and Level B controls.
Once activated (indicated by the Gain B and
Level B knob lit blue), bring the Level B control
to the 12 o’clock position and increase the Gain B
level until the desired volume is heard. Higher
Gain B settings will produce more
overdriven/distorted tones while lower settings
will maintain a clearer, less overdriven tone.
When used in conjunction with the Level B
control, the desired overdrive and output volume
can be set relative to the Gain A level. You should
be hearing your bass quite well through both the
Gain A and Gain B channels. At this point you
can experiment with different EQ and Contour
settings. A sample setting can also be found on
page 7.

*The Limiter is active upon power up (Master is
lit blue) and is recommended for high volume
applications.

Quick Start

5

MB 800

ON

OFF

INPUT

-10dB MUTE

CLIP

2

1

3

Front Panel Features

1

Input: A standard ¼” input jack to connect active
or passive basses using a shielded cable.

2

-10 dB Pad/Clip indicator: This is generally set
to the down position except in cases where the
clip indicator (the ring surrounding the -10dB
switch) flashes more than occasionally. This

Front Panel Features

indicates the input is being overdriven. If the

-10dB pad is active (up position) and the clip
indicator still flashes frequently, reduce the
volume on your bass.

3

Mute: Set this switch to on (up) position when
tuning or unplugging your instrument. The input
signal will be sent to the tuner output located on
the rear panel but no signal will be sent to the
speaker or XLR outputs. When the mute is
active, the ring surrounding the mute switch will
be lit red.

4

Gain A (push): Sets the preamp gain after the
input stage and is used in conjunction with the
input pad to optimize the input signal level sent
through the preamp. Activated by default upon
power up and when the Gain A knob is pressed as
well as from the provided footswitch. The Gain A
knob is lit blue when active.

5

Gain B (push): Allows an additional preamp
gain level to be set independent of Gain A. When
used in conjunction with the Level B control, the
desired overdrive and output volume can be set
relative to the Gain A level. Activated by
pressing the Gain B knob or by the included
footswitch. Gain B remains active and is lit blue
until Gain A is selected.

6

Contour: The contour control decreases the
mid-range frequencies while boosting low and
high frequencies.

7

Treble: Boost and cut at 7 kHz +14 dB shelving
type. Use this control to add or remove edge and
definition.

8

Hi-Mid: Boost and cut at 1 kHz +6 dB. A “Q
Optimized,” band pass type, this works on lower

GAIN B

PUSH A PUSH B PUSH LIM

4

CONTOUR TREBLE HI-MID LO-MID BASSGAIN A LEVEL-B MASTER

5 6

7

8

9

10

11

string harmonics and effects the punch of your
sound.

9

Lo-Mid: Boost and cut at 250Hz +6dB/-10 dB. A
“Q optimized” band pass type, this works for the
main body of your sound.

10

Bass: Boost and cut a 60Hz +10 dB, shelving
type. This is used to control the low end push.

11

Level B: Activated and is lit blue in conjunction
with Gain B. Sets the volume when Gain B is
selected.

12

Master (push): Controls the overall output of the
MB800. In addition, pushing the master knob
engages/disengages the limiter function. Upon
powering up the amplifier, the Master knob
indicator is lit blue indicating the limiter is
engaged. When the master knob is pushed the
limiter function is disengaged and the knob
indicator changes to white. If power amp
clipping occurs, the knob indicator will flash red
indicating that the limiter function should be
engaged. The limiter function prevents the power
amp from distorting and is recommended during
high volume applications.
Limiter (Master knob pushed/engaged): When
this button is engaged it prevents the power amp
from distorting. It is recommended that this
feature is used for during high volume
applications.

13

Power Switch: Turns the amplifier on and off. In
the on position, the ring surrounding the button
will light red during power up then changes to
blue, indicating the amp is ready for normal
operation. Should the amp experience a fault
(over heat or over current) the amp will mute and
the ring will light red until the condition is
corrected. This LED turns off when the power is
switched off. This turns the amp off but it does
not completely disconnect the power from the
AC mains.

6

12

POWER

MB 800

13

AC INPUT

100V-120V/50-60Hz

MB 800

DIRECT OUT PATCH BAY

POST

EQ

PRE

FX

HEADPHONES (1)

SENDRETURNTUNERFT. SWITCH

LINE OUT/CHAIN OUT (2)

1

2

800 WATTS/4 OHMS

SPEAKER

CLASS 2 WIRING

Rear Panel Features

1

2

3 4

Rear Panel Features

1

AC Receptacle: The detachable power cord
plugs in here.

2

Balanced Direct Out: This electronically
balanced output allows a direct connection to a
P.A. system.

3

Pre/Post EQ Button: This button switches the
direct out signal to be before or after the EQ.

4

Foot switch Input: A foot switch is provided to
select Gain A or Gain B modes.

5

Tuner Output: This output comes directly off of
the input stage and can be patched to a tuner
using a shielded patch cord. This output is
unaffected by the tuning mute feature.

6

Return: This input allows the signal from
outboard effects devices to be inserted before the
boost section.

7

Send: This output allows signal from the preamp
to be fed to outboard effects devices from a point
after the EQ section.

8

Headphone/Line out/Chain out: This output
allows the user to send a direct (unbalanced) line
out to devices with unbalanced inputs such as

5

6 7 8 9

10

personal multitrack recorders. This connection
requires a shielded patch cord. The Chain out
allows the user to connect directly to a GK MBP
powered extension cabinet. This connection is
made with a balanced, tip, ring, sleeve to male
XLR cable.

tip ring sleeve

male XLR

Unswitched, this headphone jack can be used to
monitor your playing with headphones.

9

Headphone/Line out/Chain Out switch: This
switch toggles the output from headphone to line
out/chain out.

10

Speaker: Power amp output to speaker cabinet.
Speaker outputs are high current, twist-lock
Speakon connectors.

7

Sound Tips

MB 800

The MB 800 has several unique features which, if
used properly, will help you obtain the sound you
have been searching for.

Discreet Preamp: The MB800 features a
completely discreet FET (field effect transistor)
driven preamp. The same FET technology used to
create the legendary boost (G.I.V.E.) circuit found
in all GK amplifiers for over 30 years is used in
every stage of the MB800 preamp. Using FET
devices with the gate biased in a way that
emphasizes the optimum harmonic content of the
signal to drive the GK four band active EQ,
Contour and Gain allows the MB800 to transition
seamlessly from a full, warm, clean tone to full on
GK growl.

The Equalizer: The Equalizer is used to fine tune
your sound. When adjusting making adjustments,
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 that this equalizer is very easy to use 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 available on any other bass amp. Lower
contour settings are recommended for midrange
clarity at higher playing levels.

Gain A or Gain B, the cleanest sound is obtained
with master volume settings at approximately 3
o'clock.

Direct Out: The MB Series provides a low noise,
high quality balanced direct output 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 the input stage providing
a low noise output superior to external direct boxes
and impedance transformers. In the "Pre" position,
the direct output signal is only effected by the Input
Volume, -10db Pad and Mute. 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"
(EQ settings etc.) and preamp response to the
Direct Out jack. This gives you complete control
over the Direct Out’s tone and volume.

Limiter: When the limiter is engaged it prevents
the power amp from distorting. It is recommended
that this feature is used during high volume
situations.

Sound Tips

Gain B/ Level B: Turning up the Gain B control
will add a little growl to your tone by adding a
small amount of ever order harmonic distortion.
This is an unmistakable GK trade mark sound that
you will surely grow to appreciate. Raising the
Boost while lowering Level B will add more growl
while keeping the sound level the same. You can
use Level B to increase or lower the overall output
volume when switching the Gain B on via the front
panel or from the included foot switch. With either

8

MB 800

Installation: To insure proper operation and to
avoid potential safety hazards, place the unit on a
firm, level surface.

Ventilation: Make certain that proper space is
provided for ventilation. Never block the fan vent
holes located on the sides 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

Installation

locations, and areas that are exposed to direct
sunlight, or near heating equipment. Avoid moist or
humid locations.

Remember, power amplifiers generate heat. The
ventilation slots on the enclosure are specifically
designed to remove this heat. Blocking or placing
other electronic equipment near the heat dissipation
system may possibly affect the long-term reliability
of both your amplifier and the other equipment.

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.

Packaging: 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.

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.

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

9

Tech Talk

MB 800

The MB800 features a completely discreet FET
(field effect transistor) driven preamp. The same
FET technology used to create the legendary boost
(G.I.V.E.) circuit found in all GK amplifiers for over
30 years is used in every stage of the MB800
preamp. Using FET devices with the gate biased in a
way that emphasizes the optimum harmonic content
to drive the GK four band active EQ, Contour and
Gain allows the MB800 to transition seamlessly
from a full, warm, clean tone to full on GK growl.

Characteristics of the MB 800:

The MB 800 is a flexible, state-of-the-art amplifier
designed to deliver maximum performance while
remaining small, lightweight and simple to operate.
This is accomplished through a few, very important
features:

· Class D power supply and power amp.

· Four, Bass specific bands of active equalization
for precise tone control.

· Balanced direct output eliminates the need for a
direct box.

· Continuously variable fan cooling.

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 40 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 sounds natural at any setting.
Now it is possible to obtain the sound you desire.

Contour: The Contour is used to completely revoice
the amplifier. The Contour control tunes between
two different shaping circuits, with greatly different
responses. 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.

.

“G.I.V.E.” Technology: As in all GK pre-amps, the
MB 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: 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 a low speed,
reducing fan noise. As the amp works harder, the fan
speed increases to keep everything cool.
Smart Protection Circuitry: The MB Series
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 MB Series 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.
In Closing: You should now have a thorough
understanding of how your new MB 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 www.gallien-krueger.com or email us
at [e-mail].

Tech Talk

10

INPUT

CLIP LIGHT

-10dB

TUNER

MUTE

GAIN A

GAIN B

BLOCK DIAGRAM

PRE

POST

SEND

CONTOUR

4 BAND EQ

RETURN

FOOT SW

LEVEL B

GND LIFT

SW

MASTER

BALANCE

DIRECT OUT

CLIP LIGHT

DETECTOR

LIMITER

CLIP

ONOFF

LINE/CHAIN OUT

800W/ 4 OHMS

DIGITAL

POWER AMP

HEAD PHONE

LINE/CHAIN OUT

SW

1+

1- 2-

2+

1+

1- 2-

2+

RING
TIP

SPEAKON JACK

SPEAKON JACK

HEAD PHONE/
LINE OUT

SPECIFICATIONS

Output Power:

Input/Output Specs:
Maximum Input Level
With -10dB pad
Input Impedance
Send Output Impedance
Return Input Impedance
Tuner Output Impedance
Direct Output Impedance

Noise : -90 dB reference to 800W/560W, “A” Weighted.
Equalizer:

Bass
Lo-Mid
Hi-Mid
Treble

Voicing Filters:

Contour

Amplifier Protection:

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

560W @ 8 Ohms
800W @ 4 Ohms

0.6V Rms

1.6V Rms
1M Ohms
220 Ohms
50K Ohms
10K Ohms
500 Ohms

+/-10dB @ 60Hz
+6dB/-10dB @ 250Hz
+6dB/-10dB @ 1KHz
+/-14dB @ 7KHz

+2dB @ 50Hz/ -10dB @ 500Hz/
+3dB @ 7 KHz

Cooling: Variable Speed Fan

Dimensions (HxWxD):

1.75”[44.45mm] X 11”[279.4mm] X 9”[228.67mm]

Weight: 4.9 Lbs [2.23 kgs].

Power requirements: U.S.A./Canada 120V/60Hz.

880W(full power), 110W(average power)
Europe 230V/50Hz/60Hz
880W(full power), 110W(average power)
Japan 100V/50Hz
880W(full power), 110W(average power)

This device has been tested and found to comply with:

R

CAN/CSA 60065-03 Safety Requirements.
UL std. No. 60065-2007 Safety Requirements.

US

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received,
including interference that may cause undesired operation.
Note: This equipment has been tested and found to
comply with the limits for a Class B digital device, pursu­ant to part 15 of the FCC Rules.

MB 800

Owners Manual

Part # 160-0690-A1

11