Ampeg B4R - Manual (Page 3)

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An Introduction to your new Ampeg B4R 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 B4R. This versatile and powerful bass amplifier delivers up to 1350 watts of
unsurpassed musical power, and offers several outstanding features.
All of the features and controls of your B4R are covered in detail within the pages of this owner’s guide. We rec-
ommend 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 B4R 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.
•
DUAL SEPARATE POWER AMPLIFIERS: Operate in true stereo or mono bridged mode for even
greater output power - heavy duty mono bridge speaker cable provided
•
BIAMP CAPABLE: Adjustable crossover frequency control. Low-to-high frequency balance control
•
5-POSITION STYLE CONTROL: Take your pick from five different tone variations to best suit your
playing style
•
TEXTURE CONTROL: Changes your tone for a more aggressive sound
•
9-BAND GRAPHIC EQ: Switchable at front panel or with a footswitch, you can use this as a “second
channel” for bass solos, or to shape your sound to your own exacting standards - independent level
control lets you adjust the Graphic EQ volume
•
EFFECTS MIX: 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 output is muted
•
HEAVY-DUTY SPEAKER JACKS: Speakon ® jacks for more reliable connections at higher outputs
and for mono bridged connections
•
BALANCED AND UNBALANCED LINE OUTPUTS: Independent level control. Balanced XLR and
unbalanced 1/4” output jacks - switchable pre or post EQ
•
EFFECTS LOOP: Connect your effects here for increased intensity and quieter operation
•
POWER AMP IN/PREAMP OUT: Two separate loops, one for each channel: a separate preamp may
be connected to the Power Amp In jack, and the Preamp Out jack may be connected to a slave amp
•
FOOTSWITCH CONTROL: Use a footswitch to activate the Graphic EQ and the Mute feature
•
CIRCUIT BREAKER PROTECTION: A heavy duty resettable circuit breaker provides protection
against fault conditions
Speakon ® is a registered trademark of Neutrik AG.
B4R Bass Amplifier
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.
•
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.
•
Do not 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! Consider using quality hearing protection devices.