EBASS DB 510 User Manual - page 4
HI MID: this button raises or lowers the frequencies around 800 Hz.
This helps controlling the attack of the sound. You can use this to
control also fingering sound and overall softness of the sound.
TREBLE: This button raises or lowers frequencies form 4000 Hz and up.
You can use this to control overtones, transparency and openness of
the sound , the controls interact, If, for example, you want a silky
treble, you can dampen HI MID slightly and raise TREBLE.
PHASE: This switch is very important for amplification of acoustic
bass - instruments. A double bass is in principle a great speaker,
and it sends out sound waves, like a speaker. Sound waves from the
amplifier and bass, should preferably be in phase so that they work
in phase with each other. By locating the amplifier right next to the
bass and turn up so that you barely have doubled the total volume,
one can by using the phase soon hear whether there is or
oppositional. Sound in anti-phase will be perceived as thin and
distant. Phase can also be used to remove feedback if this is a
problem with very high output levels.
MASTER: This button adjusts the overall signal to the output
amplifier and speaker, and thus controlling overall output level. Any
additional speakers are controlled from this button.
PRE POST: This switch determines whether the balanced and unbalanced
line out signal is taken before or after the tone controls.
With pre selected the line outputs will be taken before equalizing
(and before effects send/return). With post selected the line signals
are taken after equalizer and effects, so the sound engineer gets
same signal as the bass player on stage.
Rear panel: