Gallien-Krueger 2001RB Посібник користувача - Сторінка 14
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Tech Talk (continued)
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 equalizers
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 development and refinement.
The GK equalizer is unique to the industry, it's not just
a normal four band equalizer, 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 preamps, the
2001RB preamp incorporates what we call G.I.V.E
(Gate Induced Valve Effect) technology. We use field
effect devices with the gate biased in a way that
emphasizes the optimum harmonic 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.
2001RB
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
it's 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 monitors for unsafe operating
conditions such as short circuits, miswired speaker
cables, blown speakers, improper ventilation and
incorrect
speaker
protection is provided during power up/down. If the
2001RB senses any unsafe operating conditions, the
output signal is immediately 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 Biamp and Normal
Operation on page 9. 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.
In Closing: You should now have a thorough
understanding of how your new 2001RB amplifier
works and what advantages it can offer you in getting
"your" sound. We thank you for reading the Owner's
Manual and wish you the best of times! Please send us
your comments via www.gallien-krueger.com or email
us at [email protected].
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configurations.
In
addition,