PAGE 2
OVERVIEW:
Continued
type BASS and TREBLE controls are combined with a passive style MID to produce a powerful string of musically interactive and
comprehensive tone controls. If even further tweaking is desired, we have included a 3 Band Semi-Parametric Equalizer that covers
frequencies between 30Hz and 12Khz. This in-line EQ assures that any sound you can dream of can be dialed in quickly and
accurately. The three bands sensible Q points make for ease of understanding and the FREQUENCY controls overlap to allow
pinpoint accuracy in the regions where the controls meet. And finally, a series EFFECTS LOOP patch point between the preamp and
the power section.
Now that you have an overview of the controls and features of your new
WalkAbout
, let’s move on to understanding each of them
individually so that you can dial in your own personal sound quickly and easily.
HELPFUL HINTS:
1. Connect your A.C. Power Cable to a grounded outlet. Avoid ground lifts (3 to 2 prong adapter) whenever possible.
2. The optimum speaker load for your
WalkAbout
is 4 Ohms. You may use a cabinet (s) of a higher rating safely (8 Ohm) with no
degradation in tone, however the amplifier will not produce its full rated wattage. Minimum load rating is 2 Ohms and while the
WalkAbout
will handle this lower load condition - and in fact produce more than its rated power, it is not recommended. Prolonged
use of a 2 Ohm load will cause the power mosfets to run hot causing the protection circuit to trigger and mute the output signal until
such time as the mosfets can return to a safe operating temperature. Avoid using 2 Ohm loads whenever possible.
3. Use high quality cable from your instrument to the
WalkAbout
and from the
WalkAbout
to your speaker. Instrument
cable should be relatively low capacitance shielded cable. Whenever possible use lengths of 15 feet or shorter. Longer than 15’ tends
to introduce too much capacitance resulting in reduced punch and top end clarity. Speaker cable should be at least 14 gauge (or
thicker) unshielded cable and again try to keep the length of cable as short as possible for the best tonal results.
4. The BASS and TREBLE controls are active shelving type controls with a broad response even though they are acting primarily
on their center frequency Q point. This broader response works extremely well with the passive, broad-band MID control. Because
BASS and TREBLE are active controls, they actually cut (or notch) the region around the Q point when the control is set below 12:00,
Instant Gratification:
INSTRUMENT
INPUTS
PASSIVE
ACTIVE
ON
POWER
E N G I N E E R I N G
GAIN BASS MID
FOUR - STAGE VACUUM TUBE PREAMPLIFIER
S I M U L S T A T E B A S S A M P L I F I E R
TM
0 db 0 0
60 Hz 340Hz 2K
PARAMETRIC EQUALIZER
30 300 200 2K 1.2K 12K
-15 +
- +
- +15
TREBLE DI LEVEL MASTER