Hughes & Kettner 250BASS Musical Instrument Amplifier User Manual


 
TUNER
MUTE
@
&
GAIN
BASS
FREQ-MIDiLEVEL
TREBLE
FX -
MIX MASTER
B
/;,_
LO
-
*I
HI
00
El3
Q@
Q
Mi
BASSBASE
250
(1)
(2)
(3)
(4) (5) (6) (7) (8)
(9)
(10)(11/13/14)(12)
(15)
(16)
THE
BASSBASE
250'S TONE CONTROLS
The BASSBASE's tone controls are designed to produce dramatic changes in the
tonal spectrum by using only the essential control features. A minimum of effort by
you, the player, can achieve maximum effect.
(5) BASS:
The BASS pot adjusts the lower frequency range and specifically influences the
frequency response of the low B, E and A strings. The center position is neutral; turn
the pot to the right to increase the low end, to the left to decrease it. The adjustment
values are approximately +/- 15db. The center frequency is
90hz.
MID
-
THE PARAMETRIC MID CONTROL
The
Bassbase
250’s mid-range control is semi-parametric, allowing you to freely
choose the frequency range which you want to influence. The semi-parametric tone
control has two pots, one to determine the frequency range that is to be adjusted, and
the other to increase or decrease said frequencies. This allows the mid-range to be
custom tailored to your personal tastes.
(6) FREQ:
This pot dials in the frequency you want to adjust; app.
2000
bz rotated completely
right and 140
hz
at the far left position.
(7) LEVEL:
Determines the amount of boost or taper to the frequency you have dialed in with the
FREQ pot. The control range is
+/-15 db.
The parametric tone control enables you to adjust the entire mid-range spectrum. The
mid-range is the most essential indegredient in a good bass sound, the entire tonal
character is determined in this frequency range. We advise you to familiarize
yourself with the
variety of tones the FREQ and LEVEL controls have to offer and
experiment with these pots
to
hear all the possibilities.