Ampeg B5R User Manual
Owner ’s Guide
for the
B5R
Bass Amplifier
Made in the U.S.A. by
2
Important Safeguards and Precautions:
All Ampeg products are designed for continuous safe operation, as long as common sense is used and steps are taken to
help avoid certain problems. Abiding by the following rules can help prevent damage to your amplifier, yourself and others.
• The amplifier is equipped with a three-pronged AC power cord. To reduce the risk of electrical shock, NEVER
remove or otherwise attempt to defeat the ground pin of the power cord.
• Connect the amplifier ONLY to a properly grounded AC outlet of the proper voltage for your amp.
• Avoid sudden temperature extremes, rain and moisture. Also, avoid sudden and intense impact. (If the unit
has been subjected to any of the preceding abuses, have it looked at by an authorized service center.)
• NEVER set the amplifier on a support that might give out under its weight.
• Whenever using tall or stacked speaker cabinets, use them ONLY on a level surface. NEVER set tall or stacked
cabinets on a surface with more than a five degree incline since tipping or falling could occur, possibly causing serious injuries.
• Always keep the total speaker impedance at or above the rated load.
• Unplug the amplifier before cleaning it. NEVER spray liquid cleaners onto the amplifier. Wipe it with a slightly
dampened, lint-free cloth to remove dirt and film.
• Don’t use the amplifier if it has sustained damage to the chassis, controls, or power cord. Refer the unit to an
authorized service center for inspection.
• Amplifiers capable of producing high volume levels are also capable of inflicting permanent hearing loss or
damage, if the exposure to such levels is prolonged. Such damage is progressive and irreversible! See the
chart below.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE COVER.
NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
ATTENTION
RISQUE D'ELECTROCUTION
NE PAS OUVRIR
ATTENTION: POUR REDUIRE D'ELECTROCUTION NE PAS
ENLEVER LE COUVERCLE. AUCUNE PIECE INTERNE N'EST REPRABLE
PAR L'UTILISATEUR. POUR TOUTE REPARATION, S'ADRESSER A UN
TECHNICIEN QUALIFIE.
VORSICHT
ELEKTRISCHE SCHLAGGEFAHR
NICHT OFFENEN
VORSICHT: ZUR MINIMIERUNG ELEKTRISCHER SCHLAGGEFAHR NICHT
DEN DECKEL ABENHMEN. INTERNE TEILE KONNEN NICHT VOM
BENUTZER GEWARTET WERDEN. DIE WARTUNG IS QUALIFIZIERTEM
WARTUNGSPERSONAL ZU UBERLASSEN.
THIS EQUIPMENT HAS BEEN DESIGNED AND ENGINEERED TO PROVIDE SAFE AND RELIABLE OPERATION. IN ORDER TO PROLONG THE LIFE OF THE UNIT AND PREVENT ACCIDENTALDAMAGES OR INJURY, PLEASE FOLLOW THESE PRECAUTIONARYGUIDELINES:
WARNING: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOTOPEN CHASSIS; DO NOTDEFEAT OR REMOVE THE GROUND PIN OF THE POWER CORD; CONNECT ONLYTO APROPERLY GROUNDED AC POWER OUTLET.
CAUTION: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
CAUTION: NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
CAUTION: OUR AMPLIFIERS ARE CAPABLE OF PRODUCING HIGH SOUND PRESSURE LEVELS. CONTINUED EXPOSURE TO HIGH SOUND PRESSURE LEVELS CAN CAUSE PERMANENT
HEARING IMPAIRMENT OR LOSS. USER CAUTION IS ADVISED AND EAR PROTECTION IS RECOMMENDED IF UNIT IS OPERATED ATHIGH VOLUME. The chart below shows the U.S.
Government Occupational Safety and Health Administration (OSHA) regulations which were in effect at the time of this publication for permissible noise exposure, per 29CRF1910, Table G-16.
According to OSHA, any exposure in excess of those listed above could result in some hearing loss.
"IT IS NECESSARY FOR THE USER TO REFER TO THE INSTRUCTION MANUAL"
"REFERREZ-VOUS AU MANUAL D'UTILISATION"
"UNBEDINGT IN DER BEDIENUNGSANLEITUNG NACHSCHLAGEN"
EXPLANATION OF
GRAPHICAL SYMBOLS:
"DANGEROUS VOLTAGE"
"DANGER HAUTE TENSION"
"GEFAHLICHE SPANNUNG"
=
=
SOUND LEVEL dBA DURATION PER DAY
SLOW RESPONSE IN HOURS
90 8
92 6
95 4
97 3
100 2
SOUND LEVEL dBA DURATION PER DAY
SLOW RESPONSE IN HOURS
102 1-1/2
105 1
110 1/2
115 1/4 or less
TABLE OF CONTENTS
Important Safeguards and Precautions . . . . . . . . . . . . . . .2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
The Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Some Suggested Settings . . . . . . . . . . . . . . . . . . . . . . . . .6
Rack Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Technical Specifications . . . . . . . . . . . . . . . . . . .back cover
B5R Bass Amplifier
3
An Introduction to your new Ampeg B5R Bass Amplifier:
Thank you for making one of the best choices you will ever make for your musical career – choosing one
of the finest bass amps available, the Ampeg B5R. This versatile and powerful bass amplifier delivers up
to 675 watts of unsurpassed musical power, and offers several outstanding features.
All of the features and controls of your B5R are covered in detail within the pages of this owner’s guide.
We recommend going over them before you use the amplifier.
Features:
In the world of high performance bass amps, Ampeg amplifiers stand alone. In true Ampeg tradition, the
B5R offers you more power, performance and flexibility than any other bass amplifier in its class. The outstanding features of your new amplifier, features which set it apart from the competition, are listed below.
• TWO SEPARATE CHANNELS: Clean and Overdrive, with the ability to combine the
two for a unique sound and added versatility
• TWO 5-POSITION STYLE CONTROLS: Take your pick from five different tone varia-
tions to best suit your playing style
• OCTAVE CIRCUIT: Adds another signal to the input signal, one octave lower than the
original
• FX BLEND: Varies the amount of external effects mixed into the signal
• TUNER OUT JACK: Allows connection to an electronic tuner and provides an “always
live” monitor feed even when the other outputs are muted
• HEAVY-DUTY SPEAKER JACKS: A Speakon®jack is provided for a more reliable
connection at higher outputs, as well as a pair of 1/4” jacks
• TRANSFORMER BALANCED/UNBALANCED LINE OUTPUTS: Balanced XLR and
1/4” line output jacks
• EFFECTS LOOP: Connect your effects here for increased intensity and quieter oper-
ation
• POWER AMP IN/PREAMP OUT :A separate preamp may be connected to the Power
Amp In jack, and the Preamp Out jack may be connected to a slave amp, or use as a
patch point for active devices such as compressors, EQs, etc.
• FOOTSWITCH CONTROL: Use footswitches to control channel selection, the octave
circuit, and the channel combine feature
• CIRCUIT BREAKER PROTECTION: A heavy duty, resettable circuit breaker provides
protection against fault conditions
• BUILT-IN NOISE GATE: A preset internal noise gate helps keep the Overdrive chan-
nel quiet while no signal is present
Speakon®is a registered trademark of Neutrik AG.
B5R Bass Amplifier
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