700RB-II/1001RB-II Series
Tech Talk
growl and keep the definition that the horn provides.
Characteristics of the 1001RB-II/700RB-II:The horn always has to be turned down. In a Bi-Amp
The 1001RB-II/700RB-II Series is a flexible, state-of-
the-art Bass Amplifier, designed to deliver maximumsystem like the 1001RB-II/700RB-II Series, the woofer
performance, and be simple to operate. This isand the horn, each have their own power amp,
accomplished through a few, very important features:allowing us to get growl in the woofer only, while
keeping the horn sound crystal clear. Now you can
.?Extremely high current power supply andover-drive the woofer as much as you want, and leave
power amp circuitry, gets the sound out ofthe horn all the way up, keeping the definition it
your head.
.?Bi-Amp sound, two power amps, 700W/480Wbrings to your sound. Running the 1001RB-II/
for the woofer, and 50 Watts for the horn.700RB-II Series in Bi-Amp mode through a GK-RBH
Tech Talk.?Electronic crossover, seamless two way sound.cabinet, for the first time allows full access to the
benefits of Bi-Amp sound. This is the reason the
.?Four, Bass specific bands of active1001RB-II/700RB-II Series is a Bi-Amp, and it is the
equalization for precise tone control.reason you will be able to explore an entirely new
.?Three voicing filters for shaping and
customizing your sound.territory of Bass sound.
.?Balanced direct output with level control
Electronic Crossover:
eliminates need for a direct box.Bi-Amp systems allow the crossover to be electronic
.?Continuously variable fan cooling.and therefore, have much higher quality than passive
Current Output & Bass Response:crossovers. A crossover separates the sound into two
When a power amplifier is pushing several speakerparts (high and low frequency). The highs are sent to
cones, and a high-power transient like a string slapthe horn or high frequency cabinet and the lows are
sent to the woofer. In an ideal system, adding the
comes along, the amp has to tap into a large powerhighs and the lows back together would recover the
reserve to maintain cone control. If the amplifieroriginal signal. Most passive Bass systems have very
doesn?t have this ability, the sound is unresponsive
and less out front. The amp loses it?s punch and feelpoor crossovers, resulting in severe signal corruption.
at higher playing levels. Instead of responding toWhen these signals are added back together (as in
your ear), they have very little in common with the
your every command, the amplifier simply cuts thoseoriginal signal. The 1001RB-II/700RB-II Series uses
transients off, leaving you with the feeling thata Constant Voltage crossover which results in very
something is missing in your sound.
little signal corruption. In fact, when the high and
Since most amplifiers have limited output currentlow signals are added back together, the result is
capacity, they need ?current limiting circuits? toextremely close to the original. This makes a two-way
system sound more seamless, and less artificial. We
protect against self-destruction. High-power tran-have also included a Tweeter Hi-Cut switch in the
sients trigger these circuits, which rob the amplifier ofcrossover, which rolls the tweeter off above 10kHz
it?s ability to control speaker cones. This creates a
mushy, unresponsive feel to your sound.giving it a less glassy, more cone like sound.
The 1001RB-II/700RB-II Series has extremely highEqualization:
Standard tone controls and graphic equalizers give
current capacity, so it doesn?t need current limitingyou plenty of variation, but they don?t provide what
circuits for over-load protection.the instrument really needs. The fact is, graphic
There is nothing in the 1001RB-II/700RB-II Seriesequalizers are intended for room equalization. The
power amp to come between you and your soundequalization in Gallien-Krueger amplifiers reflects 30
years of continuous development and refinement. The
except faithful, raw power.GK equalizer is unique to the industry, it?s not just a
normal four band equalizer, each section is a special
Bi-Amp Sound:
Bass players have always liked the growl they get fromcircuit optimized to perform a Bass specific job in its
slight overdrive. In GK amps this comes partly fromrange of operation. These sections are wired in Series,
the boost circuits and partly from the power amp. Theso they add to one another creating a tremendously
flexible equalizer, that doesn?t sound weird at any
problem is that growl, sounds great through woofers,setting. Now it is possible to obtain the sound you
and horrible through horns. In the typical full rangedesire.
system with a passive crossover, there is no way to get
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