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GENERAL OPERATION
In order to reduce the risk of damage to any equipment, properly connect all audio and
power cables before turning on any components in the system.
Most important of ail, ALWAYS
TURN ON THE POWER AMPLIFIER LAST TO AVOID DAMAGING THE SPEAKERS OR THE AMP,
Different bass guitars will vary in output level.
For this reason, the BBE 383 Bass Guitar Pre-amp
has an input Gain control.
Adjust this knob to achieve a strong signal input to the BBE 383.
As a starting suggestion, bass guitars with passive style pick-ups will usually require a higher
setting than bass guitars with active style pick-ups.
The Equalization circuit of the BBE 383 has many facets to appease most any player.
In
conjunction with the Punch button, adjust the EQ controls of 60Hz, 125Hz, 250Hz, 600Hz, 1.8kHz,
3.3kHz, to achieve your "individual" sound.
Compression is a feature that will be welcomed by any bass player.
Adjust the Threshold knob
to eliminate any volume peaks that may accompany "slapping" the bass or for smoothing a
bass guitar for recording.
An increase in sustain is also a desired result of large amounts of
compression as determined by the Threshold control.
The BBE Process is a unique feature that only the BBE series of pre-amps possess.
The BBE
Process wili produce a ciear, crisp, full-bodied sound without adding any noise or harmonic
distortion to the signal.
The BBE Process should be used as an extension of the Equalization
controis to improve the overail quality of the bass guitar's tone.
in live sound, crossovers are used, in conjunction with the speaker cabinets, to give the
audience a clear and precise duplication of the music program.
This is achieved by aliowing
only a narrow band of frequencies to go to an individuai speaker cabinet instead of aii
frequencies going to any one speaker.
For example, all frequencies above 5kHz may go to
the tweeter/horn, 250Hz to 5kHz may go to a midrange speaker and everything below 250Hz
may go to a sub-woofer.
The end result:
Each speaker is able to work more efficiently and
produce a superior quality of music.
The BBE 383 has a crossover circuit built in.
The
Crossover is equipped with an adjustable Frequency point and a Balance control to adjust the
mix of the High and Low frequency outputs.
Now a player is able to use multiple speaker
cabinets tailored to their requirements:
A cabinet for the midrange frequencies and one for
the thundering lows.
Additionally, these outputs may also be used to create many different
bass sounds by mixing the Crossover's signal with the signal from the main output.
The Volume control will simultaneously adjust the BBE 383's output volume from all outputs:
The
Balanced, Unbalanced, and Crossover outputs.
Use either the Unbalanced or the Balanced
output to connect to a power amp or a mixing console and the Crossover outputs, as
described above, to best suit the requirements of any performance.
The Unbalanced and
Crossover outputs are 1/4" monaural phone plug while the Balanced output is an male XLR
connector with a Ground Lift switch to eliminate any multiple ground connections.
Use the following illustrations as a guide for placing the BBE 383 into the signal chain.
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