Gallien-Krueger 2001RBP Manual del usuario - Página 18
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Tech Talk
Equalization:
The sound you want is in your head, but you just
can't get it. You think it's you, your bass or maybe
your amp. Yes, your amp. Standard tone controls and
graphic equalizers don't get it. Sure, they give you
plenty of variation, but they don't provide what the
instrument really needs. The fact is, graphic equaliz-
ers are intended for room equalization, and are only
put in bass amps because it's a no-brainer for the
designer. The equalization in Gallien-Krueger
amplifiers reflects 30 years of continuous develop-
ment and refinement. The GK equalizer is unique to
the industry, it's not just a normal four band equal-
izer, each section is a special circuit optimized to
perform a Bass specific job in its range of operation.
These sections are wired in Series, so they add to one
another creating a tremendously flexible equalizer,
that doesn't sound weird at any setting. You actually
might even get to hear that sound in your head.
Voicing Filters:
Voicing filters are used to completely re-voice the
amplifier. In the case of the Contour and String Bass
controls, the effect is dramatic.
The Contour control tunes between two different
shaping circuits, with greatly different response. With
the control all the way up, the low end is slightly
boosted, the mids are dropped and the high end is
pushed up. This is a response contour not available
with a normal equalizer, and is only found in GK
amplifiers.
The way a Bass amp deals with the instrument low
string is a critical part of it's sound. In fact, a five
string instrument requires an entirely different low
end response than a four string instrument. No
equalizer can make the necessary adjustments to
accommodate both, however the String Bass button
on the 2001RB does just that. When it is out, the
2001RB is voiced like the 800RB. Push it in and the
2001RB is voiced for five string instruments. For
some playing styles you may want it in, even with a
four string instrument...at least now, you have a
choice!
"G.I.V.E." Technology:
As in all GK pre-amps, the 2001RB pre-amp incorpo-
rates what we call G.I.V.E (Gate Induced Valve Effect)
2001RB & 2001RBP
Technology. We use field effect devices with the gate
biased in a way that emphasizes the optimum har-
monic content of the signal. Working in concert with
our unique Four Band Active Equalizer, and three
stage Voicing Filter Section, G.I.V.E. technology
produces a consistently pleasing bass tone.
Cool Running = Reliability:
The 2001RB uses a "dual rail power supply" that
generates about half the heat of conventional
amplifiers. Low output signals run off a low voltage
supply, and high level signals run off a high voltage
supply. This keeps the amp running a lot cooler and
makes it much more reliable. To cool the amp when
its being driven hard, we've designed a temperature
sensitive fan cooling system. When the amp is under
a light load, the fan is off or running at a low speed,
reducing fan noise. As the amp works harder, the fan
speed increases to keep everything cool.
Smart Protection Circuitry:
The 2001RB's protection circuitry constantly moni-
tors for unsafe operating conditions such as short
circuits, mis-wired speaker cables, blown speakers,
improper ventilation and incorrect speaker configu-
rations. In addition, protection is provided during
power up/down. If the 2001RB senses any unsafe
operating conditions, the output signal is immedi-
ately muted and the power light changes from Blue to
flashing orange. The amplifier will remain muted
until the fault is removed. If the protection circuit
activates while playing, turn the amplifier off and
check the amplifier speaker output connections. Be
sure that you are not exceeding the maximum
recommend load described in this manual. Also,
make sure that you have connected the amplifier to
your speakers as described in Bi-Amp and Normal
Operation on page 7. If the problem persists, contact
GK directly for advice.
Low Noise Operation:
The 2001RB uses a high gain, high headroom, low
noise input stage. It has such a large dynamic range
(60v p-p) that very few instruments can overdrive it.
Even most basses with "active" electronics do not
need the input attenuator to be set. The benefit to you
is less hiss from your horn, and over all, much less
noise.
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